Handle values from the metadata files

* Add support for wrapper types

* Move `FilesWithExtensionIterator` to `core::common`

* Remove unneeded use of two `HashMap`s

* Make metadata structs more typed

* Impl new_from for wrapper types

* Implement the new input handling logic

* Fix edge-case in input handling

* Ignore macro doc comment tests

* Correct comment

* Fix edge-case in deployment order

* Handle calldata better

* Remove todo

.github/workflows/test.yml

@@ -0,0 +1,147 @@
+name: Test workflow
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+    types: [opened, synchronize]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  cache-polkadot:
+    name: Build and cache Polkadot binaries on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-24.04, macos-14]
+
+    steps:
+      - name: Checkout repo and submodules
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install dependencies (Linux)
+        if: matrix.os == 'ubuntu-24.04'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y protobuf-compiler clang libclang-dev
+          rustup target add wasm32-unknown-unknown
+          rustup component add rust-src
+
+      - name: Install dependencies (macOS)
+        if: matrix.os == 'macos-14'
+        run: |
+          brew install protobuf
+          rustup target add wasm32-unknown-unknown
+          rustup component add rust-src
+
+      - name: Cache binaries
+        id: cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/bin/substrate-node
+            ~/.cargo/bin/eth-rpc
+          key: polkadot-binaries-${{ matrix.os }}-${{ hashFiles('polkadot-sdk/.git') }}
+
+      - name: Build substrate-node
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: |
+          cd polkadot-sdk
+          cargo install --locked --force --profile=production --path substrate/bin/node/cli --bin substrate-node --features cli
+
+      - name: Build eth-rpc
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: |
+          cd polkadot-sdk
+          cargo install --path substrate/frame/revive/rpc --bin eth-rpc
+
+  ci:
+    name: CI on ${{ matrix.os }}
+    needs: cache-polkadot
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-24.04, macos-14]
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Restore binaries from cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/bin/substrate-node
+            ~/.cargo/bin/eth-rpc
+          key: polkadot-binaries-${{ matrix.os }}-${{ hashFiles('polkadot-sdk/.git') }}
+
+      - name: Setup Rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          rustflags: ""
+
+      - name: Add wasm32 target
+        run: |
+          rustup target add wasm32-unknown-unknown
+          rustup component add rust-src
+
+      - name: Install Geth on Ubuntu
+        if: matrix.os == 'ubuntu-24.04'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y protobuf-compiler
+
+          # We were facing some issues in CI with the 1.16.* versions of geth, and specifically on
+          # Ubuntu. Eventually, we found out that the last version of geth that worked in our CI was
+          # version 1.15.11. Thus, this is the version that we want to use in CI. The PPA sadly does
+          # not have historic versions of Geth and therefore we need to resort to downloading pre
+          # built binaries for Geth and the surrounding tools which is what the following parts of 
+          # the script do.
+
+          sudo apt-get install -y wget ca-certificates tar
+          ARCH=$(uname -m)
+          if [ "$ARCH" = "x86_64" ]; then
+            URL="https://gethstore.blob.core.windows.net/builds/geth-alltools-linux-amd64-1.15.11-36b2371c.tar.gz"
+          elif [ "$ARCH" = "aarch64" ]; then
+            URL="https://gethstore.blob.core.windows.net/builds/geth-alltools-linux-arm64-1.15.11-36b2371c.tar.gz"
+          else
+            echo "Unsupported architecture: $ARCH"
+            exit 1
+          fi
+          wget -qO- "$URL" | sudo tar xz -C /usr/local/bin --strip-components=1
+          geth --version
+
+      - name: Install Geth on macOS
+        if: matrix.os == 'macos-14'
+        run: |
+          brew tap ethereum/ethereum
+          brew install ethereum protobuf
+
+      - name: Machete
+        uses: bnjbvr/cargo-machete@v0.7.1
+
+      - name: Format
+        run: make format
+
+      - name: Clippy
+        run: make clippy
+
+      - name: Check substrate-node version
+        run: substrate-node --version
+
+      - name: Check eth-rpc version
+        run: eth-rpc --version
+
+      - name: Test cargo workspace
+        run: make test

.gitignore

@@ -0,0 +1,9 @@
+/target
+.vscode/
+.DS_Store
+node_modules
+/*.json
+
+# We do not want to commit any log files that we produce from running the code locally so this is 
+# added to the .gitignore file.
+*.log

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "polkadot-sdk"]
+	path = polkadot-sdk
+	url = https://github.com/paritytech/polkadot-sdk.git

Cargo.toml

@@ -0,0 +1,82 @@
+[workspace]
+resolver = "2"
+members = ["crates/*"]
+
+[workspace.package]
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+license = "MIT/Apache-2.0"
+edition = "2024"
+repository = "https://github.com/paritytech/revive-differential-testing.git"
+rust-version = "1.85.0"
+
+[workspace.dependencies]
+revive-dt-compiler = { version = "0.1.0", path = "crates/compiler" }
+revive-dt-config = { version = "0.1.0", path = "crates/config" }
+revive-dt-core = { version = "0.1.0", path = "crates/core" }
+revive-dt-format = { version = "0.1.0", path = "crates/format" }
+revive-dt-node = { version = "0.1.0", path = "crates/node" }
+revive-dt-node-interaction = { version = "0.1.0", path = "crates/node-interaction" }
+revive-dt-node-pool = { version = "0.1.0", path = "crates/node-pool" }
+revive-dt-report = { version = "0.1.0", path = "crates/report" }
+revive-dt-solc-binaries = { version = "0.1.0", path = "crates/solc-binaries" }
+
+alloy-primitives = "1.2.1"
+alloy-sol-types = "1.2.1"
+anyhow = "1.0"
+clap = { version = "4", features = ["derive"] }
+futures = { version = "0.3.31" }
+hex = "0.4.3"
+reqwest = { version = "0.12.15", features = ["blocking", "json"] }
+once_cell = "1.21"
+rayon = { version = "1.10" }
+semver = { version = "1.0", features = ["serde"] }
+serde = { version = "1.0", default-features = false, features = ["derive"] }
+serde_json = { version = "1.0", default-features = false, features = [
+    "arbitrary_precision",
+    "std",
+] }
+sha2 = { version = "0.10.9" }
+sp-core = "36.1.0"
+sp-runtime = "41.1.0"
+temp-dir = { version = "0.1.16" }
+tempfile = "3.3"
+tokio = { version = "1", default-features = false, features = [
+    "rt-multi-thread",
+] }
+uuid = { version = "1.8", features = ["v4"] }
+tracing = "0.1.41"
+tracing-subscriber = { version = "0.3.19", default-features = false, features = [
+    "fmt",
+    "json",
+    "env-filter",
+] }
+indexmap = { version = "2.10.0", default-features = false }
+
+# revive compiler
+revive-solc-json-interface = { git = "https://github.com/paritytech/revive", rev = "3389865af7c3ff6f29a586d82157e8bc573c1a8e" }
+revive-common = { git = "https://github.com/paritytech/revive", rev = "3389865af7c3ff6f29a586d82157e8bc573c1a8e" }
+revive-differential = { git = "https://github.com/paritytech/revive", rev = "3389865af7c3ff6f29a586d82157e8bc573c1a8e" }
+
+[workspace.dependencies.alloy]
+version = "1.0.22"
+default-features = false
+features = [
+    "json-abi",
+    "providers",
+    "provider-ipc",
+    "provider-debug-api",
+    "reqwest",
+    "rpc-types",
+    "signer-local",
+    "std",
+    "network",
+    "serde",
+    "rpc-types-eth",
+    "genesis",
+]
+
+[profile.bench]
+inherits = "release"
+lto = true
+codegen-units = 1

Makefile

@@ -0,0 +1,15 @@
+.PHONY: format clippy test machete
+
+format:
+	cargo fmt --all -- --check
+
+clippy:
+	cargo clippy --all-features --workspace -- --deny warnings
+
+machete:
+	cargo install cargo-machete
+	cargo machete crates
+
+test: format clippy machete
+	cargo test --workspace -- --nocapture
+

README.md

@@ -1,2 +1,34 @@
 # revive-differential-tests
-revive differential testing framework
+
+The revive differential testing framework allows to define smart contract tests in a declarative manner in order to compile and execute them against different Ethereum-compatible blockchain implmentations. This is useful to:
+- Analyze observable differences in contract compilation and execution across different blockchain implementations, including contract storage, account balances, transaction output and emitted events on a per-transaction base.
+- Collect and compare benchmark metrics such as code size, gas usage or transaction throughput per seconds (TPS) of different blockchain implementations.
+- Ensure reproducible contract builds across multiple compiler implementations or multiple host platforms.
+- Implement end-to-end regression tests for Ethereum-compatible smart contract stacks.
+
+# Declarative test format
+
+For now, the format used to write tests is the [matter-labs era compiler format](https://github.com/matter-labs/era-compiler-tests?tab=readme-ov-file#matter-labs-simplecomplex-format). This allows us to re-use many tests from their corpora.
+
+# The `retester` utility
+
+The `retester` helper utilty is used to run the tests. To get an idea of what `retester` can do, please consults its command line help: 
+
+```
+cargo run -p revive-dt-core -- --help
+```
+
+For example, to run the [complex Solidity tests](https://github.com/matter-labs/era-compiler-tests/tree/main/solidity/complex), define a corpus structure as follows:
+
+```json
+{
+    "name": "ML Solidity Complex",
+    "path": "/path/to/era-compiler-tests/solidity/complex"
+}
+```
+
+Assuming this to be saved in a `ml-solidity-complex.json` file, the following command will try to compile and execute the tests found inside the corpus:
+
+```bash
+RUST_LOG=debug cargo r --release -p revive-dt-core  -- --corpus ml-solidity-complex.json 
+```

assets/test_metadata.json

@@ -0,0 +1,326 @@
+{
+    "modes": [
+        "Y >=0.8.9",
+        "E",
+        "I"
+    ],
+    "cases": [
+        {
+            "name": "first",
+            "inputs": [
+                {
+                    "instance": "WBTC_1",
+                    "method": "#deployer",
+                    "calldata": [
+                        "0x40",
+                        "0x80",
+                        "4",
+                        "0x5742544300000000000000000000000000000000000000000000000000000000",
+                        "14",
+                        "0x5772617070656420425443000000000000000000000000000000000000000000"
+                    ],
+                    "expected": [
+                        "WBTC_1.address"
+                    ]
+                },
+                {
+                    "instance": "WBTC_2",
+                    "method": "#deployer",
+                    "calldata": [
+                        "0x40",
+                        "0x80",
+                        "4",
+                        "0x5742544300000000000000000000000000000000000000000000000000000000",
+                        "14",
+                        "0x5772617070656420425443000000000000000000000000000000000000000000"
+                    ],
+                    "expected": [
+                        "WBTC_2.address"
+                    ]
+                },
+                {
+                    "instance": "Mooniswap",
+                    "method": "#deployer",
+                    "calldata": [
+                        "0x0000000000000000000000000000000000000000000000000000000000000060",
+                        "0x00000000000000000000000000000000000000000000000000000000000000c0",
+                        "0x0000000000000000000000000000000000000000000000000000000000000100",
+                        "0x0000000000000000000000000000000000000000000000000000000000000002",
+                        "WBTC_1.address",
+                        "WBTC_2.address",
+                        "4",
+                        "0x5742544300000000000000000000000000000000000000000000000000000000",
+                        "14",
+                        "0x5772617070656420425443000000000000000000000000000000000000000000"
+                    ],
+                    "expected": {
+                        "return_data": [
+                            "Mooniswap.address"
+                        ],
+                        "events": [
+                            {
+                                "topics": [
+                                    "0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0",
+                                    "0x0000000000000000000000000000000000000000000000000000000000000000",
+                                    "0xdeadbeef01000000000000000000000000000000"
+                                ],
+                                "values": []
+                            }
+                        ],
+                        "exception": false
+                    }
+                },
+                {
+                    "instance": "WBTC_1",
+                    "method": "_mint",
+                    "calldata": [
+                        "0xdeadbeef00000000000000000000000000000042",
+                        "1000000000"
+                    ],
+                    "expected": {
+                        "return_data": [],
+                        "events": [
+                            {
+                                "topics": [
+                                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                                    "0x0000000000000000000000000000000000000000000000000000000000000000",
+                                    "0xdeadbeef00000000000000000000000000000042"
+                                ],
+                                "values": [
+                                    "1000000000"
+                                ]
+                            }
+                        ],
+                        "exception": false
+                    }
+                },
+                {
+                    "instance": "WBTC_2",
+                    "method": "_mint",
+                    "calldata": [
+                        "0xdeadbeef00000000000000000000000000000042",
+                        "1000000000"
+                    ],
+                    "expected": {
+                        "return_data": [],
+                        "events": [
+                            {
+                                "topics": [
+                                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                                    "0x0000000000000000000000000000000000000000000000000000000000000000",
+                                    "0xdeadbeef00000000000000000000000000000042"
+                                ],
+                                "values": [
+                                    "1000000000"
+                                ]
+                            }
+                        ],
+                        "exception": false
+                    }
+                },
+                {
+                    "instance": "WBTC_1",
+                    "caller": "0xdeadbeef00000000000000000000000000000042",
+                    "method": "approve",
+                    "calldata": [
+                        "Mooniswap.address",
+                        "500000000"
+                    ],
+                    "expected": {
+                        "return_data": [
+                            "0x0000000000000000000000000000000000000000000000000000000000000001"
+                        ],
+                        "events": [
+                            {
+                                "topics": [
+                                    "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925",
+                                    "0xdeadbeef00000000000000000000000000000042",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "500000000"
+                                ]
+                            }
+                        ],
+                        "exception": false
+                    }
+                },
+                {
+                    "instance": "WBTC_2",
+                    "caller": "0xdeadbeef00000000000000000000000000000042",
+                    "method": "approve",
+                    "calldata": [
+                        "Mooniswap.address",
+                        "500000000"
+                    ],
+                    "expected": {
+                        "return_data": [
+                            "0x0000000000000000000000000000000000000000000000000000000000000001"
+                        ],
+                        "events": [
+                            {
+                                "topics": [
+                                    "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925",
+                                    "0xdeadbeef00000000000000000000000000000042",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "500000000"
+                                ]
+                            }
+                        ],
+                        "exception": false
+                    }
+                },
+                {
+                    "instance": "Mooniswap",
+                    "caller": "0xdeadbeef00000000000000000000000000000042",
+                    "method": "deposit",
+                    "calldata": [
+                        "0x0000000000000000000000000000000000000000000000000000000000000040",
+                        "0x00000000000000000000000000000000000000000000000000000000000000a0",
+                        "0x0000000000000000000000000000000000000000000000000000000000000002",
+                        "10000000",
+                        "10000000",
+                        "0x0000000000000000000000000000000000000000000000000000000000000002",
+                        "1000000",
+                        "1000000"
+                    ],
+                    "expected": {
+                        "return_data": [
+                            "10000000"
+                        ],
+                        "events": [
+                            {
+                                "topics": [
+                                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                                    "0x0000000000000000000000000000000000000000000000000000000000000000",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "1000"
+                                ]
+                            },
+                            {
+                                "topics": [
+                                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                                    "0xdeadbeef00000000000000000000000000000042",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "10000000"
+                                ]
+                            },
+                            {
+                                "topics": [
+                                    "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925",
+                                    "0xdeadbeef00000000000000000000000000000042",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "490000000"
+                                ]
+                            },
+                            {
+                                "topics": [
+                                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                                    "0xdeadbeef00000000000000000000000000000042",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "10000000"
+                                ]
+                            },
+                            {
+                                "topics": [
+                                    "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925",
+                                    "0xdeadbeef00000000000000000000000000000042",
+                                    "Mooniswap.address"
+                                ],
+                                "values": [
+                                    "490000000"
+                                ]
+                            },
+                            {
+                                "topics": [
+                                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                                    "0x0000000000000000000000000000000000000000000000000000000000000000",
+                                    "0xdeadbeef00000000000000000000000000000042"
+                                ],
+                                "values": [
+                                    "10000000"
+                                ]
+                            },
+                            {
+                                "topics": [
+                                    "0x2da466a7b24304f47e87fa2e1e5a81b9831ce54fec19055ce277ca2f39ba42c4",
+                                    "0xdeadbeef00000000000000000000000000000042"
+                                ],
+                                "values": [
+                                    "10000000"
+                                ]
+                            }
+                        ],
+                        "exception": false
+                    }
+                },
+                {
+                    "instance": "Mooniswap",
+                    "caller": "0xdeadbeef00000000000000000000000000000042",
+                    "method": "swap",
+                    "calldata": [
+                        "WBTC_1.address",
+                        "WBTC_2.address",
+                        "5000",
+                        "5000",
+                        "0"
+                    ]
+                }
+            ],
+            "expected": {
+                "return_data": [
+                    "5000"
+                ],
+                "events": [
+                    {
+                        "topics": [
+                            "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
+                            "0xdeadbeef00000000000000000000000000000042",
+                            "Mooniswap.address"
+                        ],
+                        "values": [
+                            "5000"
+                        ]
+                    },
+                    {
+                        "topics": [
+                            "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925",
+                            "0xdeadbeef00000000000000000000000000000042",
+                            "Mooniswap.address"
+                        ],
+                        "values": [
+                            "489995000"
+                        ]
+                    }
+                ],
+                "exception": false
+            }
+        }
+    ],
+    "contracts": {
+        "Mooniswap": "Mooniswap.sol:Mooniswap",
+        "WBTC_1": "ERC20/ERC20.sol:ERC20",
+        "WBTC_2": "ERC20/ERC20.sol:ERC20",
+        "VirtualBalance": "Mooniswap.sol:VirtualBalance",
+        "Math": "math/Math.sol:Math"
+    },
+    "libraries": {
+        "Mooniswap.sol": {
+            "VirtualBalance": "VirtualBalance"
+        },
+        "math/Math.sol": {
+            "Math": "Math"
+        }
+    },
+    "group": "Real life"
+}

crates/compiler/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "revive-dt-compiler"
+description = "Library for compiling Solidity contracts to EVM and PVM"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+anyhow = { workspace = true }
+revive-solc-json-interface = { workspace = true }
+revive-dt-config = { workspace = true }
+revive-dt-solc-binaries = { workspace = true }
+revive-common = { workspace = true }
+semver = { workspace = true }
+serde_json = { workspace = true }
+tracing = { workspace = true }

crates/compiler/src/lib.rs

@@ -0,0 +1,174 @@
+//! This crate provides compiler helpers for all supported Solidity targets:
+//! - Ethereum solc compiler
+//! - Polkadot revive resolc compiler
+//! - Polkadot revive Wasm compiler
+
+use std::{
+    fs::read_to_string,
+    hash::Hash,
+    path::{Path, PathBuf},
+};
+
+use revive_dt_config::Arguments;
+
+use revive_common::EVMVersion;
+use revive_solc_json_interface::{
+    SolcStandardJsonInput, SolcStandardJsonInputLanguage, SolcStandardJsonInputSettings,
+    SolcStandardJsonInputSettingsOptimizer, SolcStandardJsonInputSettingsSelection,
+    SolcStandardJsonOutput,
+};
+use semver::Version;
+
+pub mod revive_js;
+pub mod revive_resolc;
+pub mod solc;
+
+/// A common interface for all supported Solidity compilers.
+pub trait SolidityCompiler {
+    /// Extra options specific to the compiler.
+    type Options: Default + PartialEq + Eq + Hash;
+
+    /// The low-level compiler interface.
+    fn build(
+        &self,
+        input: CompilerInput<Self::Options>,
+    ) -> anyhow::Result<CompilerOutput<Self::Options>>;
+
+    fn new(solc_executable: PathBuf) -> Self;
+
+    fn get_compiler_executable(config: &Arguments, version: Version) -> anyhow::Result<PathBuf>;
+}
+
+/// The generic compilation input configuration.
+#[derive(Debug)]
+pub struct CompilerInput<T: PartialEq + Eq + Hash> {
+    pub extra_options: T,
+    pub input: SolcStandardJsonInput,
+    pub allow_paths: Vec<PathBuf>,
+    pub base_path: Option<PathBuf>,
+}
+
+/// The generic compilation output configuration.
+#[derive(Debug)]
+pub struct CompilerOutput<T: PartialEq + Eq + Hash> {
+    /// The solc standard JSON input.
+    pub input: CompilerInput<T>,
+    /// The produced solc standard JSON output.
+    pub output: SolcStandardJsonOutput,
+    /// The error message in case the compiler returns abnormally.
+    pub error: Option<String>,
+}
+
+impl<T> PartialEq for CompilerInput<T>
+where
+    T: PartialEq + Eq + Hash,
+{
+    fn eq(&self, other: &Self) -> bool {
+        let self_input = serde_json::to_vec(&self.input).unwrap_or_default();
+        let other_input = serde_json::to_vec(&self.input).unwrap_or_default();
+        self.extra_options.eq(&other.extra_options) && self_input == other_input
+    }
+}
+
+impl<T> Eq for CompilerInput<T> where T: PartialEq + Eq + Hash {}
+
+impl<T> Hash for CompilerInput<T>
+where
+    T: PartialEq + Eq + Hash,
+{
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.extra_options.hash(state);
+        state.write(&serde_json::to_vec(&self.input).unwrap_or_default());
+    }
+}
+
+/// A generic builder style interface for configuring all compiler options.
+pub struct Compiler<T: SolidityCompiler> {
+    input: SolcStandardJsonInput,
+    extra_options: T::Options,
+    allow_paths: Vec<PathBuf>,
+    base_path: Option<PathBuf>,
+}
+
+impl Default for Compiler<solc::Solc> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl<T> Compiler<T>
+where
+    T: SolidityCompiler,
+{
+    pub fn new() -> Self {
+        Self {
+            input: SolcStandardJsonInput {
+                language: SolcStandardJsonInputLanguage::Solidity,
+                sources: Default::default(),
+                settings: SolcStandardJsonInputSettings::new(
+                    None,
+                    Default::default(),
+                    None,
+                    SolcStandardJsonInputSettingsSelection::new_required(),
+                    SolcStandardJsonInputSettingsOptimizer::new(
+                        false,
+                        None,
+                        &Version::new(0, 0, 0),
+                        false,
+                    ),
+                    None,
+                    None,
+                ),
+            },
+            extra_options: Default::default(),
+            allow_paths: Default::default(),
+            base_path: None,
+        }
+    }
+
+    pub fn solc_optimizer(mut self, enabled: bool) -> Self {
+        self.input.settings.optimizer.enabled = enabled;
+        self
+    }
+
+    pub fn with_source(mut self, path: &Path) -> anyhow::Result<Self> {
+        self.input
+            .sources
+            .insert(path.display().to_string(), read_to_string(path)?.into());
+        Ok(self)
+    }
+
+    pub fn evm_version(mut self, evm_version: EVMVersion) -> Self {
+        self.input.settings.evm_version = Some(evm_version);
+        self
+    }
+
+    pub fn extra_options(mut self, extra_options: T::Options) -> Self {
+        self.extra_options = extra_options;
+        self
+    }
+
+    pub fn allow_path(mut self, path: PathBuf) -> Self {
+        self.allow_paths.push(path);
+        self
+    }
+
+    pub fn base_path(mut self, base_path: PathBuf) -> Self {
+        self.base_path = Some(base_path);
+        self
+    }
+
+    pub fn try_build(self, solc_path: PathBuf) -> anyhow::Result<CompilerOutput<T::Options>> {
+        T::new(solc_path).build(CompilerInput {
+            extra_options: self.extra_options,
+            input: self.input,
+            allow_paths: self.allow_paths,
+            base_path: self.base_path,
+        })
+    }
+
+    /// Returns the compiler JSON input.
+    pub fn input(&self) -> SolcStandardJsonInput {
+        self.input.clone()
+    }
+}

crates/compiler/src/revive_js.rs

@@ -0,0 +1,2 @@
+//! Implements the [crate::SolidityCompiler] trait with revive Wasm for
+//! compiling contracts to PVM bytecode (via Wasm).

crates/compiler/src/revive_resolc.rs

@@ -0,0 +1,154 @@
+//! Implements the [SolidityCompiler] trait with `resolc` for
+//! compiling contracts to PolkaVM (PVM) bytecode.
+
+use std::{
+    path::PathBuf,
+    process::{Command, Stdio},
+};
+
+use crate::{CompilerInput, CompilerOutput, SolidityCompiler};
+use revive_dt_config::Arguments;
+use revive_solc_json_interface::SolcStandardJsonOutput;
+
+/// A wrapper around the `resolc` binary, emitting PVM-compatible bytecode.
+#[derive(Debug)]
+pub struct Resolc {
+    /// Path to the `resolc` executable
+    resolc_path: PathBuf,
+}
+
+impl SolidityCompiler for Resolc {
+    type Options = Vec<String>;
+
+    #[tracing::instrument(level = "debug", ret)]
+    fn build(
+        &self,
+        input: CompilerInput<Self::Options>,
+    ) -> anyhow::Result<CompilerOutput<Self::Options>> {
+        let mut command = Command::new(&self.resolc_path);
+        command
+            .stdin(Stdio::piped())
+            .stdout(Stdio::piped())
+            .stderr(Stdio::piped())
+            .arg("--standard-json");
+
+        if let Some(ref base_path) = input.base_path {
+            command.arg("--base-path").arg(base_path);
+        }
+        if !input.allow_paths.is_empty() {
+            command.arg("--allow-paths").arg(
+                input
+                    .allow_paths
+                    .iter()
+                    .map(|path| path.display().to_string())
+                    .collect::<Vec<_>>()
+                    .join(","),
+            );
+        }
+        let mut child = command.spawn()?;
+
+        let stdin_pipe = child.stdin.as_mut().expect("stdin must be piped");
+        serde_json::to_writer(stdin_pipe, &input.input)?;
+
+        let json_in = serde_json::to_string_pretty(&input.input)?;
+
+        let output = child.wait_with_output()?;
+        let stdout = output.stdout;
+        let stderr = output.stderr;
+
+        if !output.status.success() {
+            let message = String::from_utf8_lossy(&stderr);
+            tracing::error!(
+                "resolc failed exit={} stderr={} JSON-in={} ",
+                output.status,
+                &message,
+                json_in,
+            );
+            return Ok(CompilerOutput {
+                input,
+                output: Default::default(),
+                error: Some(message.into()),
+            });
+        }
+
+        let mut parsed =
+            serde_json::from_slice::<SolcStandardJsonOutput>(&stdout).map_err(|e| {
+                anyhow::anyhow!(
+                    "failed to parse resolc JSON output: {e}\nstderr: {}",
+                    String::from_utf8_lossy(&stderr)
+                )
+            })?;
+
+        // Detecting if the compiler output contained errors and reporting them through logs and
+        // errors instead of returning the compiler output that might contain errors.
+        for error in parsed.errors.iter().flatten() {
+            if error.severity == "error" {
+                tracing::error!(?error, ?input, "Encountered an error in the compilation");
+                anyhow::bail!("Encountered an error in the compilation: {error}")
+            }
+        }
+
+        // We need to do some post processing on the output to make it in the same format that solc
+        // outputs. More specifically, for each contract, the `.metadata` field should be replaced
+        // with the `.metadata.solc_metadata` field which contains the ABI and other information
+        // about the compiled contracts. We do this because we do not want any downstream logic to
+        // need to differentiate between which compiler is being used when extracting the ABI of the
+        // contracts.
+        if let Some(ref mut contracts) = parsed.contracts {
+            for (contract_path, contracts_map) in contracts.iter_mut() {
+                for (contract_name, contract_info) in contracts_map.iter_mut() {
+                    let Some(metadata) = contract_info.metadata.take() else {
+                        continue;
+                    };
+
+                    // Get the `solc_metadata` in the metadata of the contract.
+                    let Some(solc_metadata) = metadata
+                        .get("solc_metadata")
+                        .and_then(|metadata| metadata.as_str())
+                    else {
+                        tracing::error!(
+                            contract_path,
+                            contract_name,
+                            metadata = serde_json::to_string(&metadata).unwrap(),
+                            "Encountered a contract compiled with resolc that has no solc_metadata"
+                        );
+                        anyhow::bail!(
+                            "Contract {} compiled with resolc that has no solc_metadata",
+                            contract_name
+                        );
+                    };
+
+                    // Replace the original metadata with the new solc_metadata.
+                    contract_info.metadata =
+                        Some(serde_json::Value::String(solc_metadata.to_string()));
+                }
+            }
+        }
+
+        tracing::debug!(
+            output = %serde_json::to_string(&parsed).unwrap(),
+            "Compiled successfully"
+        );
+
+        Ok(CompilerOutput {
+            input,
+            output: parsed,
+            error: None,
+        })
+    }
+
+    fn new(resolc_path: PathBuf) -> Self {
+        Resolc { resolc_path }
+    }
+
+    fn get_compiler_executable(
+        config: &Arguments,
+        _version: semver::Version,
+    ) -> anyhow::Result<PathBuf> {
+        if !config.resolc.as_os_str().is_empty() {
+            return Ok(config.resolc.clone());
+        }
+
+        Ok(PathBuf::from("resolc"))
+    }
+}

crates/compiler/src/solc.rs

@@ -0,0 +1,103 @@
+//! Implements the [SolidityCompiler] trait with solc for
+//! compiling contracts to EVM bytecode.
+
+use std::{
+    path::PathBuf,
+    process::{Command, Stdio},
+};
+
+use crate::{CompilerInput, CompilerOutput, SolidityCompiler};
+use revive_dt_config::Arguments;
+use revive_dt_solc_binaries::download_solc;
+use revive_solc_json_interface::SolcStandardJsonOutput;
+
+#[derive(Debug)]
+pub struct Solc {
+    solc_path: PathBuf,
+}
+
+impl SolidityCompiler for Solc {
+    type Options = ();
+
+    #[tracing::instrument(level = "debug", ret)]
+    fn build(
+        &self,
+        input: CompilerInput<Self::Options>,
+    ) -> anyhow::Result<CompilerOutput<Self::Options>> {
+        let mut command = Command::new(&self.solc_path);
+        command
+            .stdin(Stdio::piped())
+            .stdout(Stdio::piped())
+            .stderr(Stdio::piped())
+            .arg("--standard-json");
+
+        if let Some(ref base_path) = input.base_path {
+            command.arg("--base-path").arg(base_path);
+        }
+        if !input.allow_paths.is_empty() {
+            command.arg("--allow-paths").arg(
+                input
+                    .allow_paths
+                    .iter()
+                    .map(|path| path.display().to_string())
+                    .collect::<Vec<_>>()
+                    .join(","),
+            );
+        }
+        let mut child = command.spawn()?;
+
+        let stdin = child.stdin.as_mut().expect("should be piped");
+        serde_json::to_writer(stdin, &input.input)?;
+        let output = child.wait_with_output()?;
+
+        if !output.status.success() {
+            let message = String::from_utf8_lossy(&output.stderr);
+            tracing::error!("solc failed exit={} stderr={}", output.status, &message);
+            return Ok(CompilerOutput {
+                input,
+                output: Default::default(),
+                error: Some(message.into()),
+            });
+        }
+
+        let parsed =
+            serde_json::from_slice::<SolcStandardJsonOutput>(&output.stdout).map_err(|e| {
+                anyhow::anyhow!(
+                    "failed to parse resolc JSON output: {e}\nstderr: {}",
+                    String::from_utf8_lossy(&output.stdout)
+                )
+            })?;
+
+        // Detecting if the compiler output contained errors and reporting them through logs and
+        // errors instead of returning the compiler output that might contain errors.
+        for error in parsed.errors.iter().flatten() {
+            if error.severity == "error" {
+                tracing::error!(?error, ?input, "Encountered an error in the compilation");
+                anyhow::bail!("Encountered an error in the compilation: {error}")
+            }
+        }
+
+        tracing::debug!(
+            output = %String::from_utf8_lossy(&output.stdout).to_string(),
+            "Compiled successfully"
+        );
+
+        Ok(CompilerOutput {
+            input,
+            output: parsed,
+            error: None,
+        })
+    }
+
+    fn new(solc_path: PathBuf) -> Self {
+        Self { solc_path }
+    }
+
+    fn get_compiler_executable(
+        config: &Arguments,
+        version: semver::Version,
+    ) -> anyhow::Result<PathBuf> {
+        let path = download_solc(config.directory(), version, config.wasm)?;
+        Ok(path)
+    }
+}

crates/config/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "revive-dt-config"
+description = "global configuration for the revive differential tester"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+alloy = { workspace = true }
+clap = { workspace = true }
+semver = { workspace = true }
+temp-dir = { workspace = true }
+serde = { workspace = true }
+

crates/config/src/lib.rs

@@ -0,0 +1,164 @@
+//! The global configuration used across all revive differential testing crates.
+
+use std::{
+    fmt::Display,
+    path::{Path, PathBuf},
+};
+
+use alloy::{network::EthereumWallet, signers::local::PrivateKeySigner};
+use clap::{Parser, ValueEnum};
+use semver::Version;
+use serde::{Deserialize, Serialize};
+use temp_dir::TempDir;
+
+#[derive(Debug, Parser, Clone, Serialize, Deserialize)]
+#[command(name = "retester")]
+pub struct Arguments {
+    /// The `solc` version to use if the test didn't specify it explicitly.
+    #[arg(long = "solc", short, default_value = "0.8.29")]
+    pub solc: Version,
+
+    /// Use the Wasm compiler versions.
+    #[arg(long = "wasm")]
+    pub wasm: bool,
+
+    /// The path to the `resolc` executable to be tested.
+    ///
+    /// By default it uses the `resolc` binary found in `$PATH`.
+    ///
+    /// If `--wasm` is set, this should point to the resolc Wasm ile.
+    #[arg(long = "resolc", short, default_value = "resolc")]
+    pub resolc: PathBuf,
+
+    /// A list of test corpus JSON files to be tested.
+    #[arg(long = "corpus", short)]
+    pub corpus: Vec<PathBuf>,
+
+    /// A place to store temporary artifacts during test execution.
+    ///
+    /// Creates a temporary dir if not specified.
+    #[arg(long = "workdir", short)]
+    pub working_directory: Option<PathBuf>,
+
+    /// Add a tempdir manually if `working_directory` was not given.
+    ///
+    /// We attach it here because [TempDir] prunes itself on drop.
+    #[clap(skip)]
+    #[serde(skip)]
+    pub temp_dir: Option<&'static TempDir>,
+
+    /// The path to the `geth` executable.
+    ///
+    /// By default it uses `geth` binary found in `$PATH`.
+    #[arg(short, long = "geth", default_value = "geth")]
+    pub geth: PathBuf,
+
+    /// The maximum time in milliseconds to wait for geth to start.
+    #[arg(long = "geth-start-timeout", default_value = "2000")]
+    pub geth_start_timeout: u64,
+
+    /// The test network chain ID.
+    #[arg(short, long = "network-id", default_value = "420420420")]
+    pub network_id: u64,
+
+    /// Configure nodes according to this genesis.json file.
+    #[arg(long = "genesis", default_value = "genesis.json")]
+    pub genesis_file: PathBuf,
+
+    /// The signing account private key.
+    #[arg(
+        short,
+        long = "account",
+        default_value = "0x4f3edf983ac636a65a842ce7c78d9aa706d3b113bce9c46f30d7d21715b23b1d"
+    )]
+    pub account: String,
+
+    /// The differential testing leader node implementation.
+    #[arg(short, long = "leader", default_value = "geth")]
+    pub leader: TestingPlatform,
+
+    /// The differential testing follower node implementation.
+    #[arg(short, long = "follower", default_value = "kitchensink")]
+    pub follower: TestingPlatform,
+
+    /// Only compile against this testing platform (doesn't execute the tests).
+    #[arg(long = "compile-only")]
+    pub compile_only: Option<TestingPlatform>,
+
+    /// Determines the amount of tests that are executed in parallel.
+    #[arg(long = "workers", default_value = "12")]
+    pub workers: usize,
+
+    /// Extract problems back to the test corpus.
+    #[arg(short, long = "extract-problems")]
+    pub extract_problems: bool,
+
+    /// The path to the `kitchensink` executable.
+    ///
+    /// By default it uses `substrate-node` binary found in `$PATH`.
+    #[arg(short, long = "kitchensink", default_value = "substrate-node")]
+    pub kitchensink: PathBuf,
+
+    /// The path to the `eth_proxy` executable.
+    ///
+    /// By default it uses `eth-rpc` binary found in `$PATH`.
+    #[arg(short = 'p', long = "eth_proxy", default_value = "eth-rpc")]
+    pub eth_proxy: PathBuf,
+}
+
+impl Arguments {
+    /// Return the configured working directory with the following precedence:
+    /// 1. `self.working_directory` if it was provided.
+    /// 2. `self.temp_dir` if it it was provided
+    /// 3. Panic.
+    pub fn directory(&self) -> &Path {
+        if let Some(path) = &self.working_directory {
+            return path.as_path();
+        }
+
+        if let Some(temp_dir) = &self.temp_dir {
+            return temp_dir.path();
+        }
+
+        panic!("should have a workdir configured")
+    }
+
+    /// Try to parse `self.account` into a [PrivateKeySigner],
+    /// panicing on error.
+    pub fn wallet(&self) -> EthereumWallet {
+        let signer = self
+            .account
+            .parse::<PrivateKeySigner>()
+            .unwrap_or_else(|error| {
+                panic!("private key '{}' parsing error: {error}", self.account);
+            });
+        EthereumWallet::new(signer)
+    }
+}
+
+impl Default for Arguments {
+    fn default() -> Self {
+        Arguments::parse_from(["retester"])
+    }
+}
+
+/// The Solidity compatible node implementation.
+///
+/// This describes the solutions to be tested against on a high level.
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, ValueEnum, Serialize, Deserialize)]
+#[clap(rename_all = "lower")]
+pub enum TestingPlatform {
+    /// The go-ethereum reference full node EVM implementation.
+    Geth,
+    /// The kitchensink runtime provides the PolkaVM (PVM) based node implentation.
+    Kitchensink,
+}
+
+impl Display for TestingPlatform {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Geth => f.write_str("geth"),
+            Self::Kitchensink => f.write_str("revive"),
+        }
+    }
+}

crates/core/Cargo.toml

@@ -0,0 +1,32 @@
+[package]
+name = "revive-dt-core"
+description = "revive differential testing core utility"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[[bin]]
+name = "retester"
+path = "src/main.rs"
+
+[dependencies]
+revive-dt-compiler = { workspace = true }
+revive-dt-config = { workspace = true }
+revive-dt-format = { workspace = true }
+revive-dt-node = { workspace = true }
+revive-dt-node-interaction = { workspace = true }
+revive-dt-report = { workspace = true }
+
+alloy = { workspace = true }
+anyhow = { workspace = true }
+clap = { workspace = true }
+indexmap = { workspace = true }
+tracing = { workspace = true }
+tracing-subscriber = { workspace = true }
+rayon = { workspace = true }
+revive-solc-json-interface = { workspace = true }
+serde_json = { workspace = true }
+temp-dir = { workspace = true }

crates/core/src/common.rs

@@ -0,0 +1,73 @@
+use std::{borrow::Cow, collections::HashSet, path::PathBuf};
+
+/// An iterator that finds files of a certain extension in the provided directory. You can think of
+/// this a glob pattern similar to: `${path}/**/*.md`
+pub struct FilesWithExtensionIterator {
+    /// The set of allowed extensions that that match the requirement and that should be returned
+    /// when found.
+    allowed_extensions: HashSet<Cow<'static, str>>,
+
+    /// The set of directories to visit next. This iterator does BFS and so these directories will
+    /// only be visited if we can't find any files in our state.
+    directories_to_search: Vec<PathBuf>,
+
+    /// The set of files matching the allowed extensions that were found. If there are entries in
+    /// this vector then they will be returned when the [`Iterator::next`] method is called. If not
+    /// then we visit one of the next directories to visit.
+    files_matching_allowed_extensions: Vec<PathBuf>,
+}
+
+impl FilesWithExtensionIterator {
+    pub fn new(root_directory: PathBuf) -> Self {
+        Self {
+            allowed_extensions: Default::default(),
+            directories_to_search: vec![root_directory],
+            files_matching_allowed_extensions: Default::default(),
+        }
+    }
+
+    pub fn with_allowed_extension(
+        mut self,
+        allowed_extension: impl Into<Cow<'static, str>>,
+    ) -> Self {
+        self.allowed_extensions.insert(allowed_extension.into());
+        self
+    }
+}
+
+impl Iterator for FilesWithExtensionIterator {
+    type Item = PathBuf;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if let Some(file_path) = self.files_matching_allowed_extensions.pop() {
+            return Some(file_path);
+        };
+
+        let directory_to_search = self.directories_to_search.pop()?;
+
+        // Read all of the entries in the directory. If we failed to read this dir's entires then we
+        // elect to just ignore it and look in the next directory, we do that by calling the next
+        // method again on the iterator, which is an intentional decision that we made here instead
+        // of panicking.
+        let Ok(dir_entries) = std::fs::read_dir(directory_to_search) else {
+            return self.next();
+        };
+
+        for entry in dir_entries.flatten() {
+            let entry_path = entry.path();
+            if entry_path.is_dir() {
+                self.directories_to_search.push(entry_path)
+            } else if entry_path.is_file()
+                && entry_path.extension().is_some_and(|ext| {
+                    self.allowed_extensions
+                        .iter()
+                        .any(|allowed| ext.eq_ignore_ascii_case(allowed.as_ref()))
+                })
+            {
+                self.files_matching_allowed_extensions.push(entry_path)
+            }
+        }
+
+        self.next()
+    }
+}

crates/core/src/lib.rs

@@ -0,0 +1,47 @@
+//! The revive differential testing core library.
+//!
+//! This crate defines the testing configuration and
+//! provides a helper utility to execute tests.
+
+use revive_dt_compiler::{SolidityCompiler, revive_resolc, solc};
+use revive_dt_config::TestingPlatform;
+use revive_dt_node::{Node, geth, kitchensink::KitchensinkNode};
+use revive_dt_node_interaction::EthereumNode;
+
+pub mod common;
+pub mod driver;
+
+/// One platform can be tested differentially against another.
+///
+/// For this we need a blockchain node implementation and a compiler.
+pub trait Platform {
+    type Blockchain: EthereumNode + Node;
+    type Compiler: SolidityCompiler;
+
+    /// Returns the matching [TestingPlatform] of the [revive_dt_config::Arguments].
+    fn config_id() -> TestingPlatform;
+}
+
+#[derive(Default)]
+pub struct Geth;
+
+impl Platform for Geth {
+    type Blockchain = geth::Instance;
+    type Compiler = solc::Solc;
+
+    fn config_id() -> TestingPlatform {
+        TestingPlatform::Geth
+    }
+}
+
+#[derive(Default)]
+pub struct Kitchensink;
+
+impl Platform for Kitchensink {
+    type Blockchain = KitchensinkNode;
+    type Compiler = revive_resolc::Resolc;
+
+    fn config_id() -> TestingPlatform {
+        TestingPlatform::Kitchensink
+    }
+}

crates/core/src/main.rs

@@ -0,0 +1,244 @@
+use std::{
+    collections::{HashMap, HashSet},
+    sync::LazyLock,
+};
+
+use alloy::{
+    network::TxSigner,
+    primitives::FixedBytes,
+    signers::{Signature, local::PrivateKeySigner},
+};
+use clap::Parser;
+use rayon::{ThreadPoolBuilder, prelude::*};
+
+use revive_dt_config::*;
+use revive_dt_core::{
+    Geth, Kitchensink, Platform,
+    driver::{Driver, State},
+};
+use revive_dt_format::{
+    corpus::Corpus,
+    input::default_caller,
+    metadata::{AddressReplacementMap, MetadataFile},
+};
+use revive_dt_node::pool::NodePool;
+use revive_dt_report::reporter::{Report, Span};
+use temp_dir::TempDir;
+use tracing::Level;
+use tracing_subscriber::{EnvFilter, FmtSubscriber};
+
+static TEMP_DIR: LazyLock<TempDir> = LazyLock::new(|| TempDir::new().unwrap());
+
+fn main() -> anyhow::Result<()> {
+    let args = init_cli()?;
+
+    let mut corpora = collect_corpora(&args)?;
+    let mut replacement_private_keys = HashSet::<FixedBytes<32>>::new();
+    for case in corpora
+        .values_mut()
+        .flat_map(|metadata| metadata.iter_mut())
+        .flat_map(|metadata| metadata.content.cases.iter_mut())
+    {
+        let mut replacement_map = AddressReplacementMap::new();
+        for address in case.inputs.iter().filter_map(|input| {
+            if input.caller != default_caller() {
+                Some(input.caller)
+            } else {
+                None
+            }
+        }) {
+            replacement_map.add(address);
+        }
+        case.handle_address_replacement(&mut replacement_map)?;
+        replacement_private_keys.extend(
+            replacement_map
+                .into_inner()
+                .into_values()
+                .map(|(sk, _)| sk)
+                .map(|sk| sk.to_bytes()),
+        );
+    }
+
+    for (corpus, tests) in corpora {
+        let span = Span::new(corpus, args.clone())?;
+
+        match &args.compile_only {
+            Some(platform) => compile_corpus(&args, &tests, platform, span),
+            None => execute_corpus(
+                &args,
+                &tests,
+                replacement_private_keys
+                    .clone()
+                    .into_iter()
+                    .map(|bytes| PrivateKeySigner::from_bytes(&bytes).expect("Can't fail"))
+                    .collect::<Vec<_>>(),
+                span,
+            )?,
+        }
+
+        Report::save()?;
+    }
+
+    Ok(())
+}
+
+fn init_cli() -> anyhow::Result<Arguments> {
+    let subscriber = FmtSubscriber::builder()
+        .with_thread_ids(true)
+        .with_thread_names(true)
+        .with_env_filter(EnvFilter::from_default_env())
+        .with_ansi(false)
+        .pretty()
+        .finish();
+    tracing::subscriber::set_global_default(subscriber)?;
+
+    let mut args = Arguments::parse();
+
+    if args.corpus.is_empty() {
+        anyhow::bail!("no test corpus specified");
+    }
+
+    match args.working_directory.as_ref() {
+        Some(dir) => {
+            if !dir.exists() {
+                anyhow::bail!("workdir {} does not exist", dir.display());
+            }
+        }
+        None => {
+            args.temp_dir = Some(&TEMP_DIR);
+        }
+    }
+    tracing::info!("workdir: {}", args.directory().display());
+
+    ThreadPoolBuilder::new()
+        .num_threads(args.workers)
+        .build_global()?;
+
+    Ok(args)
+}
+
+fn collect_corpora(args: &Arguments) -> anyhow::Result<HashMap<Corpus, Vec<MetadataFile>>> {
+    let mut corpora = HashMap::new();
+
+    for path in &args.corpus {
+        let corpus = Corpus::try_from_path(path)?;
+        tracing::info!("found corpus: {}", path.display());
+        let tests = corpus.enumerate_tests();
+        tracing::info!("corpus '{}' contains {} tests", &corpus.name, tests.len());
+        corpora.insert(corpus, tests);
+    }
+
+    Ok(corpora)
+}
+
+fn run_driver<L, F>(
+    args: &Arguments,
+    tests: &[MetadataFile],
+    additional_signers: impl IntoIterator<Item: TxSigner<Signature> + Send + Sync + 'static>
+    + Clone
+    + Send
+    + Sync
+    + 'static,
+    span: Span,
+) -> anyhow::Result<()>
+where
+    L: Platform,
+    F: Platform,
+    L::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+    F::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+{
+    let leader_nodes = NodePool::<L::Blockchain>::new(args, additional_signers.clone())?;
+    let follower_nodes = NodePool::<F::Blockchain>::new(args, additional_signers)?;
+
+    tests.par_iter().for_each(
+        |MetadataFile {
+             content: metadata,
+             path: metadata_file_path,
+         }| {
+            // Starting a new tracing span for this metadata file. This allows our logs to be clear
+            // about which metadata file the logs belong to. We can add other information into this
+            // as well to be able to associate the logs with the correct metadata file and case
+            // that's being executed.
+            let tracing_span = tracing::span!(
+                Level::INFO,
+                "Running driver",
+                metadata_file_path = metadata_file_path.display().to_string(),
+            );
+            let _guard = tracing_span.enter();
+
+            let mut driver = Driver::<L, F>::new(
+                metadata,
+                args,
+                leader_nodes.round_robbin(),
+                follower_nodes.round_robbin(),
+            );
+
+            let execution_result = driver.execute(span);
+            tracing::info!(
+                case_success_count = execution_result.successful_cases_count,
+                case_failure_count = execution_result.failed_cases_count,
+                "Execution completed"
+            );
+
+            let mut error_count = 0;
+            for result in execution_result.results.iter() {
+                if !result.is_success() {
+                    tracing::error!(execution_error = ?result, "Encountered an error");
+                    error_count += 1;
+                }
+            }
+            if error_count == 0 {
+                tracing::info!("Execution succeeded");
+            } else {
+                tracing::info!("Execution failed");
+            }
+        },
+    );
+
+    Ok(())
+}
+
+fn execute_corpus(
+    args: &Arguments,
+    tests: &[MetadataFile],
+    additional_signers: impl IntoIterator<Item: TxSigner<Signature> + Send + Sync + 'static>
+    + Clone
+    + Send
+    + Sync
+    + 'static,
+    span: Span,
+) -> anyhow::Result<()> {
+    match (&args.leader, &args.follower) {
+        (TestingPlatform::Geth, TestingPlatform::Kitchensink) => {
+            run_driver::<Geth, Kitchensink>(args, tests, additional_signers, span)?
+        }
+        (TestingPlatform::Geth, TestingPlatform::Geth) => {
+            run_driver::<Geth, Geth>(args, tests, additional_signers, span)?
+        }
+        _ => unimplemented!(),
+    }
+
+    Ok(())
+}
+
+fn compile_corpus(
+    config: &Arguments,
+    tests: &[MetadataFile],
+    platform: &TestingPlatform,
+    span: Span,
+) {
+    tests.par_iter().for_each(|metadata| {
+        for mode in &metadata.solc_modes() {
+            match platform {
+                TestingPlatform::Geth => {
+                    let mut state = State::<Geth>::new(config, span);
+                    let _ = state.build_contracts(mode, metadata);
+                }
+                TestingPlatform::Kitchensink => {
+                    let mut state = State::<Kitchensink>::new(config, span);
+                    let _ = state.build_contracts(mode, metadata);
+                }
+            };
+        }
+    });
+}

crates/format/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "revive-dt-format"
+description = "declarative test definition format"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+revive-dt-node-interaction = { workspace = true }
+
+alloy = { workspace = true }
+alloy-primitives = { workspace = true }
+alloy-sol-types = { workspace = true }
+anyhow = { workspace = true }
+tracing = { workspace = true }
+semver = { workspace = true }
+serde = { workspace = true, features = ["derive"] }
+serde_json = { workspace = true }

crates/format/src/case.rs

@@ -0,0 +1,63 @@
+use serde::Deserialize;
+
+use crate::{
+    define_wrapper_type,
+    input::{Expected, Input},
+    metadata::AddressReplacementMap,
+    mode::Mode,
+};
+
+#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+pub struct Case {
+    pub name: Option<String>,
+    pub comment: Option<String>,
+    pub modes: Option<Vec<Mode>>,
+    pub inputs: Vec<Input>,
+    pub group: Option<String>,
+    pub expected: Option<Expected>,
+}
+
+impl Case {
+    pub fn inputs_iterator(&self) -> impl Iterator<Item = Input> {
+        let inputs_len = self.inputs.len();
+        self.inputs
+            .clone()
+            .into_iter()
+            .enumerate()
+            .map(move |(idx, mut input)| {
+                if idx + 1 == inputs_len {
+                    if input.expected.is_none() {
+                        input.expected = self.expected.clone();
+                    }
+
+                    // TODO: What does it mean for us to have an `expected` field on the case itself
+                    // but the final input also has an expected field that doesn't match the one on
+                    // the case? What are we supposed to do with that final expected field on the
+                    // case?
+
+                    input
+                } else {
+                    input
+                }
+            })
+    }
+
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &mut AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        for input in self.inputs.iter_mut() {
+            input.handle_address_replacement(old_to_new_mapping)?;
+        }
+        if let Some(ref mut expected) = self.expected {
+            expected.handle_address_replacement(old_to_new_mapping)?;
+        }
+        Ok(())
+    }
+}
+
+define_wrapper_type!(
+    /// A wrapper type for the index of test cases found in metadata file.
+    #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    CaseIdx(usize);
+);

crates/format/src/corpus.rs

@@ -0,0 +1,67 @@
+use std::{
+    fs::File,
+    path::{Path, PathBuf},
+};
+
+use serde::{Deserialize, Serialize};
+
+use crate::metadata::MetadataFile;
+
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq, Hash)]
+pub struct Corpus {
+    pub name: String,
+    pub path: PathBuf,
+}
+
+impl Corpus {
+    /// Try to read and parse the corpus definition file at given `path`.
+    pub fn try_from_path(path: &Path) -> anyhow::Result<Self> {
+        let file = File::open(path)?;
+        Ok(serde_json::from_reader(file)?)
+    }
+
+    /// Scan the corpus base directory and return all tests found.
+    pub fn enumerate_tests(&self) -> Vec<MetadataFile> {
+        let mut tests = Vec::new();
+        collect_metadata(&self.path, &mut tests);
+        tests
+    }
+}
+
+/// Recursively walks `path` and parses any JSON or Solidity file into a test
+/// definition [Metadata].
+///
+/// Found tests are inserted into `tests`.
+///
+/// `path` is expected to be a directory.
+pub fn collect_metadata(path: &Path, tests: &mut Vec<MetadataFile>) {
+    let dir_entry = match std::fs::read_dir(path) {
+        Ok(dir_entry) => dir_entry,
+        Err(error) => {
+            tracing::error!("failed to read dir '{}': {error}", path.display());
+            return;
+        }
+    };
+
+    for entry in dir_entry {
+        let entry = match entry {
+            Ok(entry) => entry,
+            Err(error) => {
+                tracing::error!("error reading dir entry: {error}");
+                continue;
+            }
+        };
+
+        let path = entry.path();
+        if path.is_dir() {
+            collect_metadata(&path, tests);
+            continue;
+        }
+
+        if path.is_file() {
+            if let Some(metadata) = MetadataFile::try_from_file(&path) {
+                tests.push(metadata)
+            }
+        }
+    }
+}

crates/format/src/input.rs

@@ -0,0 +1,815 @@
+use std::collections::HashMap;
+
+use alloy::{
+    eips::BlockNumberOrTag,
+    json_abi::JsonAbi,
+    network::TransactionBuilder,
+    primitives::{Address, Bytes, U256},
+    rpc::types::TransactionRequest,
+};
+use alloy_primitives::{FixedBytes, utils::parse_units};
+use semver::VersionReq;
+use serde::{Deserialize, Serialize};
+
+use revive_dt_node_interaction::EthereumNode;
+
+use crate::{
+    define_wrapper_type,
+    metadata::{AddressReplacementMap, ContractInstance},
+};
+
+#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+pub struct Input {
+    #[serde(default = "default_caller")]
+    pub caller: Address,
+    pub comment: Option<String>,
+    #[serde(default = "default_instance")]
+    pub instance: ContractInstance,
+    pub method: Method,
+    #[serde(default)]
+    pub calldata: Calldata,
+    pub expected: Option<Expected>,
+    pub value: Option<EtherValue>,
+    pub storage: Option<HashMap<String, Calldata>>,
+}
+
+#[derive(Clone, Debug, Deserialize, Eq, PartialEq)]
+#[serde(untagged)]
+pub enum Expected {
+    Calldata(Calldata),
+    Expected(ExpectedOutput),
+    ExpectedMany(Vec<ExpectedOutput>),
+}
+
+#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+pub struct ExpectedOutput {
+    pub compiler_version: Option<VersionReq>,
+    pub return_data: Option<Calldata>,
+    pub events: Option<Vec<Event>>,
+    #[serde(default)]
+    pub exception: bool,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+pub struct Event {
+    pub address: Option<Address>,
+    pub topics: Vec<String>,
+    pub values: Calldata,
+}
+
+#[derive(Clone, Debug, Deserialize, Eq, PartialEq)]
+#[serde(untagged)]
+pub enum Calldata {
+    Single(String),
+    Compound(Vec<String>),
+}
+
+/// Specify how the contract is called.
+#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+pub enum Method {
+    /// Initiate a deploy transaction, calling contracts constructor.
+    ///
+    /// Indicated by `#deployer`.
+    #[serde(rename = "#deployer")]
+    Deployer,
+
+    /// Does not calculate and insert a function selector.
+    ///
+    /// Indicated by `#fallback`.
+    #[default]
+    #[serde(rename = "#fallback")]
+    Fallback,
+
+    /// Call the public function with the given name.
+    #[serde(untagged)]
+    FunctionName(String),
+}
+
+define_wrapper_type!(
+    #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    EtherValue(U256);
+);
+
+impl Serialize for EtherValue {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        format!("{} wei", self.0).serialize(serializer)
+    }
+}
+
+impl<'de> Deserialize<'de> for EtherValue {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: serde::Deserializer<'de>,
+    {
+        let string = String::deserialize(deserializer)?;
+        let mut splitted = string.split(' ');
+        let (Some(value), Some(unit)) = (splitted.next(), splitted.next()) else {
+            return Err(serde::de::Error::custom("Failed to parse the value"));
+        };
+        let parsed = parse_units(value, unit.replace("eth", "ether"))
+            .map_err(|_| serde::de::Error::custom("Failed to parse units"))?
+            .into();
+        Ok(Self(parsed))
+    }
+}
+
+impl ExpectedOutput {
+    pub fn new() -> Self {
+        Default::default()
+    }
+
+    pub fn with_success(mut self) -> Self {
+        self.exception = false;
+        self
+    }
+
+    pub fn with_failure(mut self) -> Self {
+        self.exception = true;
+        self
+    }
+
+    pub fn with_calldata(mut self, calldata: Calldata) -> Self {
+        self.return_data = Some(calldata);
+        self
+    }
+
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        if let Some(ref mut calldata) = self.return_data {
+            calldata.handle_address_replacement(old_to_new_mapping)?;
+        }
+        if let Some(ref mut events) = self.events {
+            for event in events.iter_mut() {
+                event.handle_address_replacement(old_to_new_mapping)?;
+            }
+        }
+        Ok(())
+    }
+}
+
+impl Event {
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        if let Some(ref mut address) = self.address {
+            if let Some(new_address) = old_to_new_mapping.resolve(address.to_string().as_str()) {
+                *address = new_address
+            }
+        };
+        for topic in self.topics.iter_mut() {
+            if let Some(new_address) = old_to_new_mapping.resolve(topic.to_string().as_str()) {
+                *topic = new_address.to_string();
+            }
+        }
+        self.values.handle_address_replacement(old_to_new_mapping)?;
+        Ok(())
+    }
+}
+
+impl Default for Calldata {
+    fn default() -> Self {
+        Self::Compound(Default::default())
+    }
+}
+
+impl Calldata {
+    pub fn find_all_contract_instances(&self, vec: &mut Vec<ContractInstance>) {
+        if let Calldata::Compound(compound) = self {
+            for item in compound {
+                if let Some(instance) = item.strip_suffix(".address") {
+                    vec.push(ContractInstance::new_from(instance))
+                }
+            }
+        }
+    }
+
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        match self {
+            Calldata::Single(_) => {}
+            Calldata::Compound(items) => {
+                for item in items.iter_mut() {
+                    if let Some(resolved) = old_to_new_mapping.resolve(item) {
+                        *item = resolved.to_string()
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
+
+    pub fn calldata(
+        &self,
+        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        chain_state_provider: &impl EthereumNode,
+    ) -> anyhow::Result<Vec<u8>> {
+        let mut buffer = Vec::<u8>::with_capacity(self.size_requirement());
+        self.calldata_into_slice(&mut buffer, deployed_contracts, chain_state_provider)?;
+        Ok(buffer)
+    }
+
+    pub fn calldata_into_slice(
+        &self,
+        buffer: &mut Vec<u8>,
+        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        chain_state_provider: &impl EthereumNode,
+    ) -> anyhow::Result<()> {
+        match self {
+            Calldata::Single(string) => {
+                alloy::hex::decode_to_slice(string, buffer)?;
+            }
+            Calldata::Compound(items) => {
+                for (arg_idx, arg) in items.iter().enumerate() {
+                    match resolve_argument(arg, deployed_contracts, chain_state_provider) {
+                        Ok(resolved) => {
+                            buffer.extend(resolved.to_be_bytes::<32>());
+                        }
+                        Err(error) => {
+                            tracing::error!(arg, arg_idx, ?error, "Failed to resolve argument");
+                            return Err(error);
+                        }
+                    };
+                }
+            }
+        };
+        Ok(())
+    }
+
+    pub fn size_requirement(&self) -> usize {
+        match self {
+            Calldata::Single(single) => (single.len() - 2) / 2,
+            Calldata::Compound(items) => items.len() * 32,
+        }
+    }
+}
+
+impl Expected {
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        match self {
+            Expected::Calldata(calldata) => {
+                calldata.handle_address_replacement(old_to_new_mapping)?;
+            }
+            Expected::Expected(expected_output) => {
+                expected_output.handle_address_replacement(old_to_new_mapping)?;
+            }
+            Expected::ExpectedMany(expected_outputs) => {
+                for expected_output in expected_outputs.iter_mut() {
+                    expected_output.handle_address_replacement(old_to_new_mapping)?;
+                }
+            }
+        }
+        Ok(())
+    }
+}
+
+impl Input {
+    fn instance_to_address(
+        &self,
+        instance: &ContractInstance,
+        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+    ) -> anyhow::Result<Address> {
+        deployed_contracts
+            .get(instance)
+            .map(|(a, _)| *a)
+            .ok_or_else(|| anyhow::anyhow!("instance {instance:?} not deployed"))
+    }
+
+    pub fn encoded_input(
+        &self,
+        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        chain_state_provider: &impl EthereumNode,
+    ) -> anyhow::Result<Bytes> {
+        match self.method {
+            Method::Deployer | Method::Fallback => {
+                let calldata = self
+                    .calldata
+                    .calldata(deployed_contracts, chain_state_provider)?;
+
+                Ok(calldata.into())
+            }
+            Method::FunctionName(ref function_name) => {
+                let Some(abi) = deployed_contracts.get(&self.instance).map(|(_, a)| a) else {
+                    tracing::error!(
+                        contract_name = self.instance.as_ref(),
+                        available_abis = ?deployed_contracts.keys().collect::<Vec<_>>(),
+                        "Attempted to lookup ABI of contract but it wasn't found"
+                    );
+                    anyhow::bail!("ABI for instance '{}' not found", self.instance.as_ref());
+                };
+
+                tracing::trace!("ABI found for instance: {}", &self.instance.as_ref());
+
+                // We follow the same logic that's implemented in the matter-labs-tester where they resolve
+                // the function name into a function selector and they assume that he function doesn't have
+                // any existing overloads.
+                // https://github.com/matter-labs/era-compiler-tester/blob/1dfa7d07cba0734ca97e24704f12dd57f6990c2c/compiler_tester/src/test/case/input/mod.rs#L158-L190
+                let function = abi
+                    .functions()
+                    .find(|function| function.signature().starts_with(function_name))
+                    .ok_or_else(|| {
+                        anyhow::anyhow!(
+                            "Function with name {:?} not found in ABI for the instance {:?}",
+                            function_name,
+                            &self.instance
+                        )
+                    })?;
+
+                tracing::trace!("Functions found for instance: {}", self.instance.as_ref());
+
+                tracing::trace!(
+                    "Starting encoding ABI's parameters for instance: {}",
+                    self.instance.as_ref()
+                );
+
+                // Allocating a vector that we will be using for the calldata. The vector size will be:
+                // 4 bytes for the function selector.
+                // function.inputs.len() * 32 bytes for the arguments (each argument is a U256).
+                //
+                // We're using indices in the following code in order to avoid the need for us to allocate
+                // a new buffer for each one of the resolved arguments.
+                let mut calldata = Vec::<u8>::with_capacity(4 + self.calldata.size_requirement());
+                calldata.extend(function.selector().0);
+                self.calldata.calldata_into_slice(
+                    &mut calldata,
+                    deployed_contracts,
+                    chain_state_provider,
+                )?;
+
+                Ok(calldata.into())
+            }
+        }
+    }
+
+    /// Parse this input into a legacy transaction.
+    pub fn legacy_transaction(
+        &self,
+        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        chain_state_provider: &impl EthereumNode,
+    ) -> anyhow::Result<TransactionRequest> {
+        let input_data = self.encoded_input(deployed_contracts, chain_state_provider)?;
+        let transaction_request = TransactionRequest::default().from(self.caller).value(
+            self.value
+                .map(|value| value.into_inner())
+                .unwrap_or_default(),
+        );
+        match self.method {
+            Method::Deployer => Ok(transaction_request.with_deploy_code(input_data)),
+            _ => Ok(transaction_request
+                .to(self.instance_to_address(&self.instance, deployed_contracts)?)
+                .input(input_data.into())),
+        }
+    }
+
+    pub fn find_all_contract_instances(&self) -> Vec<ContractInstance> {
+        let mut vec = Vec::new();
+        vec.push(self.instance.clone());
+
+        self.calldata.find_all_contract_instances(&mut vec);
+
+        vec
+    }
+
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &mut AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        if self.caller != default_caller() {
+            self.caller = old_to_new_mapping.add(self.caller);
+        }
+        self.calldata
+            .handle_address_replacement(old_to_new_mapping)?;
+        if let Some(ref mut expected) = self.expected {
+            expected.handle_address_replacement(old_to_new_mapping)?;
+        }
+        if let Some(ref mut storage) = self.storage {
+            for calldata in storage.values_mut() {
+                calldata.handle_address_replacement(old_to_new_mapping)?;
+            }
+        }
+        Ok(())
+    }
+}
+
+fn default_instance() -> ContractInstance {
+    ContractInstance::new_from("Test")
+}
+
+pub const fn default_caller() -> Address {
+    Address(FixedBytes(alloy::hex!(
+        "90F8bf6A479f320ead074411a4B0e7944Ea8c9C1"
+    )))
+}
+
+/// This function takes in the string calldata argument provided in the JSON input and resolves it
+/// into a [`U256`] which is later used to construct the calldata.
+///
+/// # Note
+///
+/// This piece of code is taken from the matter-labs-tester repository which is licensed under MIT
+/// or Apache. The original source code can be found here:
+/// https://github.com/matter-labs/era-compiler-tester/blob/0ed598a27f6eceee7008deab3ff2311075a2ec69/compiler_tester/src/test/case/input/value.rs#L43-L146
+pub fn resolve_argument(
+    value: &str,
+    deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+    chain_state_provider: &impl EthereumNode,
+) -> anyhow::Result<U256> {
+    if let Some(instance) = value.strip_suffix(".address") {
+        Ok(U256::from_be_slice(
+            deployed_contracts
+                .get(&ContractInstance::new_from(instance))
+                .map(|(a, _)| *a)
+                .ok_or_else(|| anyhow::anyhow!("Instance `{}` not found", instance))?
+                .as_ref(),
+        ))
+    } else if let Some(value) = value.strip_prefix('-') {
+        let value = U256::from_str_radix(value, 10)
+            .map_err(|error| anyhow::anyhow!("Invalid decimal literal after `-`: {}", error))?;
+        if value > U256::ONE << 255u8 {
+            anyhow::bail!("Decimal literal after `-` is too big");
+        }
+        let value = value
+            .checked_sub(U256::ONE)
+            .ok_or_else(|| anyhow::anyhow!("`-0` is invalid literal"))?;
+        Ok(U256::MAX.checked_sub(value).expect("Always valid"))
+    } else if let Some(value) = value.strip_prefix("0x") {
+        Ok(U256::from_str_radix(value, 16)
+            .map_err(|error| anyhow::anyhow!("Invalid hexadecimal literal: {}", error))?)
+    } else if value == "$CHAIN_ID" {
+        let chain_id = chain_state_provider.chain_id()?;
+        Ok(U256::from(chain_id))
+    } else if value == "$GAS_LIMIT" {
+        let gas_limit = chain_state_provider.block_gas_limit(BlockNumberOrTag::Latest)?;
+        Ok(U256::from(gas_limit))
+    } else if value == "$COINBASE" {
+        let coinbase = chain_state_provider.block_coinbase(BlockNumberOrTag::Latest)?;
+        Ok(U256::from_be_slice(coinbase.as_ref()))
+    } else if value == "$DIFFICULTY" {
+        let block_difficulty = chain_state_provider.block_difficulty(BlockNumberOrTag::Latest)?;
+        Ok(block_difficulty)
+    } else if value.starts_with("$BLOCK_HASH") {
+        let offset: u64 = value
+            .split(':')
+            .next_back()
+            .and_then(|value| value.parse().ok())
+            .unwrap_or_default();
+
+        let current_block_number = chain_state_provider.last_block_number()?;
+        let desired_block_number = current_block_number - offset;
+
+        let block_hash = chain_state_provider.block_hash(desired_block_number.into())?;
+
+        Ok(U256::from_be_bytes(block_hash.0))
+    } else if value == "$BLOCK_NUMBER" {
+        let current_block_number = chain_state_provider.last_block_number()?;
+        Ok(U256::from(current_block_number))
+    } else if value == "$BLOCK_TIMESTAMP" {
+        let timestamp = chain_state_provider.block_timestamp(BlockNumberOrTag::Latest)?;
+        Ok(U256::from(timestamp))
+    } else {
+        Ok(U256::from_str_radix(value, 10)
+            .map_err(|error| anyhow::anyhow!("Invalid decimal literal: {}", error))?)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+
+    use super::*;
+    use alloy::json_abi::JsonAbi;
+    use alloy_primitives::address;
+    use alloy_sol_types::SolValue;
+    use std::collections::HashMap;
+
+    struct DummyEthereumNode;
+
+    impl EthereumNode for DummyEthereumNode {
+        fn execute_transaction(
+            &self,
+            _: TransactionRequest,
+        ) -> anyhow::Result<alloy::rpc::types::TransactionReceipt> {
+            unimplemented!()
+        }
+
+        fn trace_transaction(
+            &self,
+            _: &alloy::rpc::types::TransactionReceipt,
+            _: alloy::rpc::types::trace::geth::GethDebugTracingOptions,
+        ) -> anyhow::Result<alloy::rpc::types::trace::geth::GethTrace> {
+            unimplemented!()
+        }
+
+        fn state_diff(
+            &self,
+            _: &alloy::rpc::types::TransactionReceipt,
+        ) -> anyhow::Result<alloy::rpc::types::trace::geth::DiffMode> {
+            unimplemented!()
+        }
+
+        fn chain_id(&self) -> anyhow::Result<alloy_primitives::ChainId> {
+            Ok(0x123)
+        }
+
+        fn block_gas_limit(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<u128> {
+            Ok(0x1234)
+        }
+
+        fn block_coinbase(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<Address> {
+            Ok(Address::ZERO)
+        }
+
+        fn block_difficulty(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<U256> {
+            Ok(U256::from(0x12345u128))
+        }
+
+        fn block_hash(
+            &self,
+            _: alloy::eips::BlockNumberOrTag,
+        ) -> anyhow::Result<alloy_primitives::BlockHash> {
+            Ok([0xEE; 32].into())
+        }
+
+        fn block_timestamp(
+            &self,
+            _: alloy::eips::BlockNumberOrTag,
+        ) -> anyhow::Result<alloy_primitives::BlockTimestamp> {
+            Ok(0x123456)
+        }
+
+        fn last_block_number(&self) -> anyhow::Result<alloy_primitives::BlockNumber> {
+            Ok(0x1234567)
+        }
+    }
+
+    #[test]
+    fn test_encoded_input_uint256() {
+        let raw_metadata = r#"
+            [
+                {
+                    "inputs": [{"name": "value", "type": "uint256"}],
+                    "name": "store",
+                    "outputs": [],
+                    "stateMutability": "nonpayable",
+                    "type": "function"
+                }
+            ]
+        "#;
+
+        let parsed_abi: JsonAbi = serde_json::from_str(raw_metadata).unwrap();
+        let selector = parsed_abi
+            .function("store")
+            .unwrap()
+            .first()
+            .unwrap()
+            .selector()
+            .0;
+
+        let input = Input {
+            instance: ContractInstance::new_from("Contract"),
+            method: Method::FunctionName("store".to_owned()),
+            calldata: Calldata::Compound(vec!["42".into()]),
+            ..Default::default()
+        };
+
+        let mut contracts = HashMap::new();
+        contracts.insert(
+            ContractInstance::new_from("Contract"),
+            (Address::ZERO, parsed_abi),
+        );
+
+        let encoded = input.encoded_input(&contracts, &DummyEthereumNode).unwrap();
+        assert!(encoded.0.starts_with(&selector));
+
+        type T = (u64,);
+        let decoded: T = T::abi_decode(&encoded.0[4..]).unwrap();
+        assert_eq!(decoded.0, 42);
+    }
+
+    #[test]
+    fn test_encoded_input_address_with_signature() {
+        let raw_abi = r#"[
+        {
+            "inputs": [{"name": "recipient", "type": "address"}],
+            "name": "send",
+            "outputs": [],
+            "stateMutability": "nonpayable",
+            "type": "function"
+        }
+        ]"#;
+
+        let parsed_abi: JsonAbi = serde_json::from_str(raw_abi).unwrap();
+        let selector = parsed_abi
+            .function("send")
+            .unwrap()
+            .first()
+            .unwrap()
+            .selector()
+            .0;
+
+        let input: Input = Input {
+            instance: "Contract".to_owned().into(),
+            method: Method::FunctionName("send(address)".to_owned()),
+            calldata: Calldata::Compound(vec![
+                "0x1000000000000000000000000000000000000001".to_string(),
+            ]),
+            ..Default::default()
+        };
+
+        let mut contracts = HashMap::new();
+        contracts.insert(
+            ContractInstance::new_from("Contract"),
+            (Address::ZERO, parsed_abi),
+        );
+
+        let encoded = input.encoded_input(&contracts, &DummyEthereumNode).unwrap();
+        assert!(encoded.0.starts_with(&selector));
+
+        type T = (alloy_primitives::Address,);
+        let decoded: T = T::abi_decode(&encoded.0[4..]).unwrap();
+        assert_eq!(
+            decoded.0,
+            address!("0x1000000000000000000000000000000000000001")
+        );
+    }
+
+    #[test]
+    fn test_encoded_input_address() {
+        let raw_abi = r#"[
+        {
+            "inputs": [{"name": "recipient", "type": "address"}],
+            "name": "send",
+            "outputs": [],
+            "stateMutability": "nonpayable",
+            "type": "function"
+        }
+        ]"#;
+
+        let parsed_abi: JsonAbi = serde_json::from_str(raw_abi).unwrap();
+        let selector = parsed_abi
+            .function("send")
+            .unwrap()
+            .first()
+            .unwrap()
+            .selector()
+            .0;
+
+        let input: Input = Input {
+            instance: ContractInstance::new_from("Contract"),
+            method: Method::FunctionName("send".to_owned()),
+            calldata: Calldata::Compound(vec![
+                "0x1000000000000000000000000000000000000001".to_string(),
+            ]),
+            ..Default::default()
+        };
+
+        let mut contracts = HashMap::new();
+        contracts.insert(
+            ContractInstance::new_from("Contract"),
+            (Address::ZERO, parsed_abi),
+        );
+
+        let encoded = input.encoded_input(&contracts, &DummyEthereumNode).unwrap();
+        assert!(encoded.0.starts_with(&selector));
+
+        type T = (alloy_primitives::Address,);
+        let decoded: T = T::abi_decode(&encoded.0[4..]).unwrap();
+        assert_eq!(
+            decoded.0,
+            address!("0x1000000000000000000000000000000000000001")
+        );
+    }
+
+    #[test]
+    fn resolver_can_resolve_chain_id_variable() {
+        // Arrange
+        let input = "$CHAIN_ID";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(resolved, U256::from(DummyEthereumNode.chain_id().unwrap()))
+    }
+
+    #[test]
+    fn resolver_can_resolve_gas_limit_variable() {
+        // Arrange
+        let input = "$GAS_LIMIT";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            U256::from(
+                DummyEthereumNode
+                    .block_gas_limit(Default::default())
+                    .unwrap()
+            )
+        )
+    }
+
+    #[test]
+    fn resolver_can_resolve_coinbase_variable() {
+        // Arrange
+        let input = "$COINBASE";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            U256::from_be_slice(
+                DummyEthereumNode
+                    .block_coinbase(Default::default())
+                    .unwrap()
+                    .as_ref()
+            )
+        )
+    }
+
+    #[test]
+    fn resolver_can_resolve_block_difficulty_variable() {
+        // Arrange
+        let input = "$DIFFICULTY";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            DummyEthereumNode
+                .block_difficulty(Default::default())
+                .unwrap()
+        )
+    }
+
+    #[test]
+    fn resolver_can_resolve_block_hash_variable() {
+        // Arrange
+        let input = "$BLOCK_HASH";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            U256::from_be_bytes(DummyEthereumNode.block_hash(Default::default()).unwrap().0)
+        )
+    }
+
+    #[test]
+    fn resolver_can_resolve_block_number_variable() {
+        // Arrange
+        let input = "$BLOCK_NUMBER";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            U256::from(DummyEthereumNode.last_block_number().unwrap())
+        )
+    }
+
+    #[test]
+    fn resolver_can_resolve_block_timestamp_variable() {
+        // Arrange
+        let input = "$BLOCK_TIMESTAMP";
+
+        // Act
+        let resolved = resolve_argument(input, &Default::default(), &DummyEthereumNode);
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            U256::from(
+                DummyEthereumNode
+                    .block_timestamp(Default::default())
+                    .unwrap()
+            )
+        )
+    }
+}

crates/format/src/lib.rs

@@ -0,0 +1,8 @@
+//! The revive differential tests case format.
+
+pub mod case;
+pub mod corpus;
+pub mod input;
+pub mod macros;
+pub mod metadata;
+pub mod mode;

crates/format/src/macros.rs

@@ -0,0 +1,106 @@
+/// Defines wrappers around types.
+///
+/// For example, the macro invocation seen below:
+///
+/// ```rust,ignore
+/// define_wrapper_type!(CaseId => usize);
+/// ```
+///
+/// Would define a wrapper type that looks like the following:
+///
+/// ```rust,ignore
+/// pub struct CaseId(usize);
+/// ```
+///
+/// And would also implement a number of methods on this type making it easier
+/// to use.
+///
+/// These wrapper types become very useful as they make the code a lot easier
+/// to read.
+///
+/// Take the following as an example:
+///
+/// ```rust,ignore
+/// struct State {
+///     contracts: HashMap<usize, HashMap<String, Vec<u8>>>
+/// }
+/// ```
+///
+/// In the above code it's hard to understand what the various types refer to or
+/// what to expect them to contain.
+///
+/// With these wrapper types we're able to create code that's self-documenting
+/// in that the types tell us what the code is referring to. The above code is
+/// transformed into
+///
+/// ```rust,ignore
+/// struct State {
+///     contracts: HashMap<CaseId, HashMap<ContractName, ContractByteCode>>
+/// }
+/// ```
+#[macro_export]
+macro_rules! define_wrapper_type {
+    (
+        $(#[$meta: meta])*
+        $ident: ident($ty: ty) $(;)?
+    ) => {
+        $(#[$meta])*
+        pub struct $ident($ty);
+
+        impl $ident {
+            pub fn new(value: $ty) -> Self {
+                Self(value)
+            }
+
+            pub fn new_from<T: Into<$ty>>(value: T) -> Self {
+                Self(value.into())
+            }
+
+            pub fn into_inner(self) -> $ty {
+                self.0
+            }
+
+            pub fn as_inner(&self) -> &$ty {
+                &self.0
+            }
+        }
+
+        impl AsRef<$ty> for $ident {
+            fn as_ref(&self) -> &$ty {
+                &self.0
+            }
+        }
+
+        impl AsMut<$ty> for $ident {
+            fn as_mut(&mut self) -> &mut $ty {
+                &mut self.0
+            }
+        }
+
+        impl std::ops::Deref for $ident {
+            type Target = $ty;
+
+            fn deref(&self) -> &Self::Target {
+                &self.0
+            }
+        }
+
+        impl std::ops::DerefMut for $ident {
+            fn deref_mut(&mut self) -> &mut Self::Target {
+                &mut self.0
+            }
+        }
+
+        impl From<$ty> for $ident {
+            fn from(value: $ty) -> Self {
+                Self(value)
+            }
+        }
+
+        impl From<$ident> for $ty {
+            fn from(value: $ident) -> Self {
+                value.0
+            }
+        }
+    };
+}

crates/format/src/metadata.rs

@@ -0,0 +1,488 @@
+use std::{
+    collections::{BTreeMap, HashMap},
+    fmt::Display,
+    fs::{File, read_to_string},
+    ops::Deref,
+    path::{Path, PathBuf},
+    str::FromStr,
+};
+
+use alloy::signers::local::PrivateKeySigner;
+use alloy_primitives::Address;
+use revive_dt_node_interaction::EthereumNode;
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    case::Case,
+    define_wrapper_type,
+    input::resolve_argument,
+    mode::{Mode, SolcMode},
+};
+
+pub const METADATA_FILE_EXTENSION: &str = "json";
+pub const SOLIDITY_CASE_FILE_EXTENSION: &str = "sol";
+pub const SOLIDITY_CASE_COMMENT_MARKER: &str = "//!";
+
+#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+pub struct MetadataFile {
+    pub path: PathBuf,
+    pub content: Metadata,
+}
+
+impl MetadataFile {
+    pub fn try_from_file(path: &Path) -> Option<Self> {
+        Metadata::try_from_file(path).map(|metadata| Self {
+            path: path.to_owned(),
+            content: metadata,
+        })
+    }
+}
+
+impl Deref for MetadataFile {
+    type Target = Metadata;
+
+    fn deref(&self) -> &Self::Target {
+        &self.content
+    }
+}
+
+#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+pub struct Metadata {
+    pub targets: Option<Vec<String>>,
+    pub cases: Vec<Case>,
+    pub contracts: Option<BTreeMap<ContractInstance, ContractPathAndIdentifier>>,
+    // TODO: Convert into wrapper types for clarity.
+    pub libraries: Option<BTreeMap<String, BTreeMap<String, String>>>,
+    pub ignore: Option<bool>,
+    pub modes: Option<Vec<Mode>>,
+    pub file_path: Option<PathBuf>,
+}
+
+impl Metadata {
+    /// Returns the solc modes of this metadata, inserting a default mode if not present.
+    pub fn solc_modes(&self) -> Vec<SolcMode> {
+        self.modes
+            .to_owned()
+            .unwrap_or_else(|| vec![Mode::Solidity(Default::default())])
+            .iter()
+            .filter_map(|mode| match mode {
+                Mode::Solidity(solc_mode) => Some(solc_mode),
+                Mode::Unknown(mode) => {
+                    tracing::debug!("compiler: ignoring unknown mode '{mode}'");
+                    None
+                }
+            })
+            .cloned()
+            .collect()
+    }
+
+    /// Returns the base directory of this metadata.
+    pub fn directory(&self) -> anyhow::Result<PathBuf> {
+        Ok(self
+            .file_path
+            .as_ref()
+            .and_then(|path| path.parent())
+            .ok_or_else(|| anyhow::anyhow!("metadata invalid file path: {:?}", self.file_path))?
+            .to_path_buf())
+    }
+
+    /// Returns the contract sources with canonicalized paths for the files
+    pub fn contract_sources(
+        &self,
+    ) -> anyhow::Result<BTreeMap<ContractInstance, ContractPathAndIdentifier>> {
+        let directory = self.directory()?;
+        let mut sources = BTreeMap::new();
+        let Some(contracts) = &self.contracts else {
+            return Ok(sources);
+        };
+
+        for (
+            alias,
+            ContractPathAndIdentifier {
+                contract_source_path,
+                contract_ident,
+            },
+        ) in contracts
+        {
+            let alias = alias.clone();
+            let absolute_path = directory.join(contract_source_path).canonicalize()?;
+            let contract_ident = contract_ident.clone();
+
+            sources.insert(
+                alias,
+                ContractPathAndIdentifier {
+                    contract_source_path: absolute_path,
+                    contract_ident,
+                },
+            );
+        }
+
+        Ok(sources)
+    }
+
+    /// Try to parse the test metadata struct from the given file at `path`.
+    ///
+    /// Returns `None` if `path` didn't contain a test metadata or case definition.
+    ///
+    /// # Panics
+    /// Expects the supplied `path` to be a file.
+    pub fn try_from_file(path: &Path) -> Option<Self> {
+        assert!(path.is_file(), "not a file: {}", path.display());
+
+        let Some(file_extension) = path.extension() else {
+            tracing::debug!("skipping corpus file: {}", path.display());
+            return None;
+        };
+
+        if file_extension == METADATA_FILE_EXTENSION {
+            return Self::try_from_json(path);
+        }
+
+        if file_extension == SOLIDITY_CASE_FILE_EXTENSION {
+            return Self::try_from_solidity(path);
+        }
+
+        tracing::debug!("ignoring invalid corpus file: {}", path.display());
+        None
+    }
+
+    fn try_from_json(path: &Path) -> Option<Self> {
+        let file = File::open(path)
+            .inspect_err(|error| {
+                tracing::error!(
+                    "opening JSON test metadata file '{}' error: {error}",
+                    path.display()
+                );
+            })
+            .ok()?;
+
+        match serde_json::from_reader::<_, Metadata>(file) {
+            Ok(mut metadata) => {
+                metadata.file_path = Some(path.to_path_buf());
+                Some(metadata)
+            }
+            Err(error) => {
+                tracing::error!(
+                    "parsing JSON test metadata file '{}' error: {error}",
+                    path.display()
+                );
+                None
+            }
+        }
+    }
+
+    fn try_from_solidity(path: &Path) -> Option<Self> {
+        let spec = read_to_string(path)
+            .inspect_err(|error| {
+                tracing::error!(
+                    "opening JSON test metadata file '{}' error: {error}",
+                    path.display()
+                );
+            })
+            .ok()?
+            .lines()
+            .filter_map(|line| line.strip_prefix(SOLIDITY_CASE_COMMENT_MARKER))
+            .fold(String::new(), |mut buf, string| {
+                buf.push_str(string);
+                buf
+            });
+
+        if spec.is_empty() {
+            return None;
+        }
+
+        match serde_json::from_str::<Self>(&spec) {
+            Ok(mut metadata) => {
+                metadata.file_path = Some(path.to_path_buf());
+                metadata.contracts = Some(
+                    [(
+                        ContractInstance::new_from("test"),
+                        ContractPathAndIdentifier {
+                            contract_source_path: path.to_path_buf(),
+                            contract_ident: ContractIdent::new_from("Test"),
+                        },
+                    )]
+                    .into(),
+                );
+                Some(metadata)
+            }
+            Err(error) => {
+                tracing::error!(
+                    "parsing Solidity test metadata file '{}' error: '{error}' from data: {spec}",
+                    path.display()
+                );
+                None
+            }
+        }
+    }
+
+    pub fn handle_address_replacement(
+        &mut self,
+        old_to_new_mapping: &mut AddressReplacementMap,
+    ) -> anyhow::Result<()> {
+        for case in self.cases.iter_mut() {
+            case.handle_address_replacement(old_to_new_mapping)?;
+        }
+        tracing::debug!(metadata = ?self, "Performed replacement on metadata");
+        Ok(())
+    }
+}
+
+define_wrapper_type!(
+    /// Represents a contract instance found a metadata file.
+    ///
+    /// Typically, this is used as the key to the "contracts" field of metadata files.
+    #[derive(Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+    #[serde(transparent)]
+    ContractInstance(String);
+);
+
+define_wrapper_type!(
+    /// Represents a contract identifier found a metadata file.
+    ///
+    /// A contract identifier is the name of the contract in the source code.
+    #[derive(Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+    #[serde(transparent)]
+    ContractIdent(String);
+);
+
+/// Represents an identifier used for contracts.
+///
+/// The type supports serialization from and into the following string format:
+///
+/// ```text
+/// ${path}:${contract_ident}
+/// ```
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+#[serde(try_from = "String", into = "String")]
+pub struct ContractPathAndIdentifier {
+    /// The path of the contract source code relative to the directory containing the metadata file.
+    pub contract_source_path: PathBuf,
+
+    /// The identifier of the contract.
+    pub contract_ident: ContractIdent,
+}
+
+impl Display for ContractPathAndIdentifier {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}:{}",
+            self.contract_source_path.display(),
+            self.contract_ident.as_ref()
+        )
+    }
+}
+
+impl FromStr for ContractPathAndIdentifier {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mut splitted_string = s.split(":").peekable();
+        let mut path = None::<String>;
+        let mut identifier = None::<String>;
+        loop {
+            let Some(next_item) = splitted_string.next() else {
+                break;
+            };
+            if splitted_string.peek().is_some() {
+                match path {
+                    Some(ref mut path) => {
+                        path.push(':');
+                        path.push_str(next_item);
+                    }
+                    None => path = Some(next_item.to_owned()),
+                }
+            } else {
+                identifier = Some(next_item.to_owned())
+            }
+        }
+        let Some(path) = path else {
+            anyhow::bail!("Path is not defined");
+        };
+        let Some(identifier) = identifier else {
+            anyhow::bail!("Contract identifier is not defined")
+        };
+        Ok(Self {
+            contract_source_path: PathBuf::from(path),
+            contract_ident: ContractIdent::new(identifier),
+        })
+    }
+}
+
+impl TryFrom<String> for ContractPathAndIdentifier {
+    type Error = anyhow::Error;
+
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        Self::from_str(&value)
+    }
+}
+
+impl From<ContractPathAndIdentifier> for String {
+    fn from(value: ContractPathAndIdentifier) -> Self {
+        value.to_string()
+    }
+}
+
+#[derive(Clone, Debug, Default)]
+pub struct AddressReplacementMap(HashMap<Address, (PrivateKeySigner, Address)>);
+
+impl AddressReplacementMap {
+    pub fn new() -> Self {
+        Self(Default::default())
+    }
+
+    pub fn into_inner(self) -> HashMap<Address, (PrivateKeySigner, Address)> {
+        self.0
+    }
+
+    pub fn contains_key(&self, address: &Address) -> bool {
+        self.0.contains_key(address)
+    }
+
+    pub fn add(&mut self, address: Address) -> Address {
+        self.0
+            .entry(address)
+            .or_insert_with(|| {
+                let private_key = Self::new_random_private_key_signer();
+                let account = private_key.address();
+                tracing::debug!(
+                    old_address = %address,
+                    new_address = %account,
+                    "Added a new address replacement"
+                );
+                (private_key, account)
+            })
+            .1
+    }
+
+    pub fn resolve(&self, value: &str) -> Option<Address> {
+        // We attempt to resolve the given string without any additional context of the deployed
+        // contracts or the node API as we do not need them. If the resolution fails then we know
+        // that this isn't an address and we skip it.
+        let Ok(resolved) = resolve_argument(value, &Default::default(), &UnimplementedEthereumNode)
+        else {
+            return None;
+        };
+        let resolved_bytes = resolved.to_be_bytes_trimmed_vec();
+        let Ok(address) = Address::try_from(resolved_bytes.as_slice()) else {
+            return None;
+        };
+        self.0.get(&address).map(|(_, address)| *address)
+    }
+
+    fn new_random_private_key_signer() -> PrivateKeySigner {
+        // TODO: Use a seedable RNG to allow for deterministic allocation of the private keys so
+        // that we get reproducible runs.
+        PrivateKeySigner::random()
+    }
+}
+
+impl AsRef<HashMap<Address, (PrivateKeySigner, Address)>> for AddressReplacementMap {
+    fn as_ref(&self) -> &HashMap<Address, (PrivateKeySigner, Address)> {
+        &self.0
+    }
+}
+
+struct UnimplementedEthereumNode;
+
+impl EthereumNode for UnimplementedEthereumNode {
+    fn execute_transaction(
+        &self,
+        _: alloy::rpc::types::TransactionRequest,
+    ) -> anyhow::Result<alloy::rpc::types::TransactionReceipt> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn chain_id(&self) -> anyhow::Result<alloy_primitives::ChainId> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn block_gas_limit(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<u128> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn block_coinbase(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<Address> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn block_difficulty(
+        &self,
+        _: alloy::eips::BlockNumberOrTag,
+    ) -> anyhow::Result<alloy_primitives::U256> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn block_hash(
+        &self,
+        _: alloy::eips::BlockNumberOrTag,
+    ) -> anyhow::Result<alloy_primitives::BlockHash> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn block_timestamp(
+        &self,
+        _: alloy::eips::BlockNumberOrTag,
+    ) -> anyhow::Result<alloy_primitives::BlockTimestamp> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn last_block_number(&self) -> anyhow::Result<alloy_primitives::BlockNumber> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn trace_transaction(
+        &self,
+        _: &alloy::rpc::types::TransactionReceipt,
+        _: alloy::rpc::types::trace::geth::GethDebugTracingOptions,
+    ) -> anyhow::Result<alloy::rpc::types::trace::geth::GethTrace> {
+        anyhow::bail!("Unimplemented")
+    }
+
+    fn state_diff(
+        &self,
+        _: &alloy::rpc::types::TransactionReceipt,
+    ) -> anyhow::Result<alloy::rpc::types::trace::geth::DiffMode> {
+        anyhow::bail!("Unimplemented")
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn contract_identifier_respects_roundtrip_property() {
+        // Arrange
+        let string = "ERC20/ERC20.sol:ERC20";
+
+        // Act
+        let identifier = ContractPathAndIdentifier::from_str(string);
+
+        // Assert
+        let identifier = identifier.expect("Failed to parse");
+        assert_eq!(
+            identifier.contract_source_path.display().to_string(),
+            "ERC20/ERC20.sol"
+        );
+        assert_eq!(identifier.contract_ident, "ERC20".to_owned().into());
+
+        // Act
+        let reserialized = identifier.to_string();
+
+        // Assert
+        assert_eq!(string, reserialized);
+    }
+
+    #[test]
+    fn complex_metadata_file_can_be_deserialized() {
+        // Arrange
+        const JSON: &str = include_str!("../../../assets/test_metadata.json");
+
+        // Act
+        let metadata = serde_json::from_str::<Metadata>(JSON);
+
+        // Assert
+        metadata.expect("Failed to deserialize metadata");
+    }
+}

crates/format/src/mode.rs

@@ -0,0 +1,96 @@
+use semver::Version;
+use serde::de::Deserializer;
+use serde::{Deserialize, Serialize};
+
+/// Specifies the compilation mode of the test artifact.
+#[derive(Hash, Debug, Clone, Eq, PartialEq)]
+pub enum Mode {
+    Solidity(SolcMode),
+    Unknown(String),
+}
+
+/// Specify Solidity specific compiler options.
+#[derive(Hash, Debug, Default, Clone, Eq, PartialEq, Serialize, Deserialize)]
+pub struct SolcMode {
+    pub solc_version: Option<semver::VersionReq>,
+    solc_optimize: Option<bool>,
+    pub llvm_optimizer_settings: Vec<String>,
+}
+
+impl SolcMode {
+    /// Try to parse a mode string into a solc mode.
+    /// Returns `None` if the string wasn't a solc YUL mode string.
+    ///
+    /// The mode string is expected to start with the `Y` ID (YUL ID),
+    /// optionally followed by `+` or `-` for the solc optimizer settings.
+    ///
+    /// Options can be separated by a whitespace contain the following
+    /// - A solc `SemVer version requirement` string
+    /// - One or more `-OX` where X is a supposed to be an LLVM opt mode
+    pub fn parse_from_mode_string(mode_string: &str) -> Option<Self> {
+        let mut result = Self::default();
+
+        let mut parts = mode_string.trim().split(" ");
+
+        match parts.next()? {
+            "Y" => {}
+            "Y+" => result.solc_optimize = Some(true),
+            "Y-" => result.solc_optimize = Some(false),
+            _ => return None,
+        }
+
+        for part in parts {
+            if let Ok(solc_version) = semver::VersionReq::parse(part) {
+                result.solc_version = Some(solc_version);
+                continue;
+            }
+            if let Some(level) = part.strip_prefix("-O") {
+                result.llvm_optimizer_settings.push(level.to_string());
+                continue;
+            }
+            panic!("the YUL mode string {mode_string} failed to parse, invalid part: {part}")
+        }
+
+        Some(result)
+    }
+
+    /// Returns whether to enable the solc optimizer.
+    pub fn solc_optimize(&self) -> bool {
+        self.solc_optimize.unwrap_or(true)
+    }
+
+    /// Calculate the latest matching solc patch version. Returns:
+    /// - `latest_supported` if no version request was specified.
+    /// - A matching version with the same minor version as `latest_supported`, if any.
+    /// - `None` if no minor version of the `latest_supported` version matches.
+    pub fn last_patch_version(&self, latest_supported: &Version) -> Option<Version> {
+        let Some(version_req) = self.solc_version.as_ref() else {
+            return Some(latest_supported.to_owned());
+        };
+
+        // lgtm
+        for patch in (0..latest_supported.patch + 1).rev() {
+            let version = Version::new(0, latest_supported.minor, patch);
+            if version_req.matches(&version) {
+                return Some(version);
+            }
+        }
+
+        None
+    }
+}
+
+impl<'de> Deserialize<'de> for Mode {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let mode_string = String::deserialize(deserializer)?;
+
+        if let Some(solc_mode) = SolcMode::parse_from_mode_string(&mode_string) {
+            return Ok(Self::Solidity(solc_mode));
+        }
+
+        Ok(Self::Unknown(mode_string))
+    }
+}

crates/node-interaction/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "revive-dt-node-interaction"
+description = "send and trace transactions to nodes"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+alloy = { workspace = true }
+anyhow = { workspace = true }
+futures = { workspace = true }
+tracing = { workspace = true }
+once_cell = { workspace = true }
+tokio = { workspace = true }

crates/node-interaction/src/blocking_executor.rs

@@ -0,0 +1,228 @@
+//! The alloy crate __requires__ a tokio runtime.
+//! We contain any async rust right here.
+
+use std::{any::Any, panic::AssertUnwindSafe, pin::Pin, thread};
+
+use futures::FutureExt;
+use once_cell::sync::Lazy;
+use tokio::{
+    runtime::Builder,
+    sync::{mpsc::UnboundedSender, oneshot},
+};
+use tracing::Instrument;
+
+/// A blocking async executor.
+///
+/// This struct exposes the abstraction of a blocking async executor. It is a global and static
+/// executor which means that it doesn't require for new instances of it to be created, it's a
+/// singleton and can be accessed by any thread that wants to perform some async computation on the
+/// blocking executor thread.
+///
+/// The API of the blocking executor is created in a way so that it's very natural, simple to use,
+/// and unbounded to specific tasks or return types. The following is an example of using this
+/// executor to drive an async computation:
+///
+/// ```rust
+/// use revive_dt_node_interaction::*;
+///
+/// fn blocking_function() {
+///     let result = BlockingExecutor::execute(async move {
+///         tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+///         0xFFu8
+///     })
+///     .expect("Computation failed");
+///
+///     assert_eq!(result, 0xFF);
+/// }
+/// ```
+///
+/// Users get to pass in their async tasks without needing to worry about putting them in a [`Box`],
+/// [`Pin`], needing to perform down-casting, or the internal channel mechanism used by the runtime.
+/// To the user, it just looks like a function that converts some async code into sync code.
+///
+/// This struct also handled panics that occur in the passed futures and converts them into errors
+/// that can be handled by the user. This is done to allow the executor to be robust.
+///
+/// Internally, the executor communicates with the tokio runtime thread through channels which carry
+/// the [`TaskMessage`] and the results of the execution.
+pub struct BlockingExecutor;
+
+impl BlockingExecutor {
+    pub fn execute<R>(future: impl Future<Output = R> + Send + 'static) -> Result<R, anyhow::Error>
+    where
+        R: Send + 'static,
+    {
+        // Note: The blocking executor is a singleton and therefore we store its state in a static
+        // so that it's assigned only once. Additionally, when we set the state of the executor we
+        // spawn the thread where the async runtime runs.
+        static STATE: Lazy<ExecutorState> = Lazy::new(|| {
+            tracing::trace!("Initializing the BlockingExecutor state");
+
+            // All communication with the tokio runtime thread happens over mspc channels where the
+            // producers here are the threads that want to run async tasks and the consumer here is
+            // the tokio runtime thread.
+            let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel::<TaskMessage>();
+
+            thread::spawn(move || {
+                tracing::info!(
+                    thread_id = ?std::thread::current().id(),
+                    "Starting async runtime thread"
+                );
+
+                let runtime = Builder::new_current_thread()
+                    .enable_all()
+                    .build()
+                    .expect("Failed to create the async runtime");
+
+                runtime.block_on(async move {
+                    while let Some(TaskMessage {
+                        future: task,
+                        response_tx: response_channel,
+                    }) = rx.recv().await
+                    {
+                        tracing::trace!("Received a new future to execute");
+                        tokio::spawn(async move {
+                            // One of the things that the blocking executor does is that it allows
+                            // us to catch panics if they occur. By wrapping the given future in an
+                            // AssertUnwindSafe::catch_unwind we are able to catch all panic unwinds
+                            // in the given future and convert them into errors.
+                            let task = AssertUnwindSafe(task).catch_unwind();
+
+                            let result = task.await;
+                            let _ = response_channel.send(result);
+                        });
+                    }
+                })
+            });
+
+            ExecutorState { tx }
+        });
+
+        // We need to perform blocking synchronous communication between the current thread and the
+        // tokio runtime thread with the result of the async computation and the oneshot channels
+        // from tokio allows us to do that. The sender side of the channel will be given to the
+        // tokio runtime thread to send the result when the computation is completed and the receive
+        // side of the channel will be kept with this thread to await for the response of the async
+        // task to come back.
+        let (response_tx, response_rx) =
+            oneshot::channel::<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>();
+
+        // The tokio runtime thread expects a Future<Output = Box<dyn Any + Send>> + Send to be
+        // sent to it to execute. However, this function has a typed Future<Output = R> + Send and
+        // therefore we need to change the type of the future to fit what the runtime thread expects
+        // in the task message. In doing this conversion, we lose some of the type information since
+        // we're converting R => dyn Any. However, we will perform down-casting on the result to
+        // convert it back into R.
+        let future = Box::pin(
+            async move { Box::new(future.await) as Box<dyn Any + Send> }.in_current_span(),
+        );
+
+        let task = TaskMessage::new(future, response_tx);
+        if let Err(error) = STATE.tx.send(task) {
+            tracing::error!(?error, "Failed to send the task to the blocking executor");
+            anyhow::bail!("Failed to send the task to the blocking executor: {error:?}")
+        }
+
+        let result = match response_rx.blocking_recv() {
+            Ok(result) => result,
+            Err(error) => {
+                tracing::error!(
+                    ?error,
+                    "Failed to get the response from the blocking executor"
+                );
+                anyhow::bail!("Failed to get the response from the blocking executor: {error:?}")
+            }
+        };
+
+        match result.map(|result| {
+            *result
+                .downcast::<R>()
+                .expect("Type mismatch in the downcast")
+        }) {
+            Ok(result) => Ok(result),
+            Err(error) => {
+                tracing::error!(
+                    ?error,
+                    "Failed to downcast the returned result into the expected type"
+                );
+                anyhow::bail!(
+                    "Failed to downcast the returned result into the expected type: {error:?}"
+                )
+            }
+        }
+    }
+}
+/// Represents the state of the async runtime. This runtime is designed to be a singleton runtime
+/// which means that in the current running program there's just a single thread that has an async
+/// runtime.
+struct ExecutorState {
+    /// The sending side of the task messages channel. This is used by all of the other threads to
+    /// communicate with the async runtime thread.
+    tx: UnboundedSender<TaskMessage>,
+}
+
+/// Represents a message that contains an asynchronous task that's to be executed by the runtime
+/// as well as a way for the runtime to report back on the result of the execution.
+struct TaskMessage {
+    /// The task that's being requested to run. This is a future that returns an object that does
+    /// implement [`Any`] and [`Send`] to allow it to be sent between the requesting thread and the
+    /// async thread.
+    future: Pin<Box<dyn Future<Output = Box<dyn Any + Send>> + Send>>,
+
+    /// A one shot sender channel where the sender of the task is expecting to hear back on the
+    /// result of the task.
+    response_tx: oneshot::Sender<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>,
+}
+
+impl TaskMessage {
+    pub fn new(
+        future: Pin<Box<dyn Future<Output = Box<dyn Any + Send>> + Send>>,
+        response_tx: oneshot::Sender<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>,
+    ) -> Self {
+        Self {
+            future,
+            response_tx,
+        }
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn simple_future_works() {
+        // Act
+        let result = BlockingExecutor::execute(async move {
+            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+            0xFFu8
+        })
+        .unwrap();
+
+        // Assert
+        assert_eq!(result, 0xFFu8);
+    }
+
+    #[test]
+    #[allow(unreachable_code, clippy::unreachable)]
+    fn panics_in_futures_are_caught() {
+        // Act
+        let result = BlockingExecutor::execute(async move {
+            panic!("This is a panic!");
+            0xFFu8
+        });
+
+        // Assert
+        assert!(result.is_err());
+
+        // Act
+        let result = BlockingExecutor::execute(async move {
+            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+            0xFFu8
+        })
+        .unwrap();
+
+        // Assert
+        assert_eq!(result, 0xFFu8)
+    }
+}

crates/node-interaction/src/lib.rs

@@ -0,0 +1,49 @@
+//! This crate implements all node interactions.
+
+use alloy::eips::BlockNumberOrTag;
+use alloy::primitives::{Address, BlockHash, BlockNumber, BlockTimestamp, ChainId, U256};
+use alloy::rpc::types::trace::geth::{DiffMode, GethDebugTracingOptions, GethTrace};
+use alloy::rpc::types::{TransactionReceipt, TransactionRequest};
+use anyhow::Result;
+
+mod blocking_executor;
+pub use blocking_executor::*;
+
+/// An interface for all interactions with Ethereum compatible nodes.
+pub trait EthereumNode {
+    /// Execute the [TransactionRequest] and return a [TransactionReceipt].
+    fn execute_transaction(&self, transaction: TransactionRequest) -> Result<TransactionReceipt>;
+
+    /// Trace the transaction in the [TransactionReceipt] and return a [GethTrace].
+    fn trace_transaction(
+        &self,
+        receipt: &TransactionReceipt,
+        trace_options: GethDebugTracingOptions,
+    ) -> Result<GethTrace>;
+
+    /// Returns the state diff of the transaction hash in the [TransactionReceipt].
+    fn state_diff(&self, receipt: &TransactionReceipt) -> Result<DiffMode>;
+
+    /// Returns the ID of the chain that the node is on.
+    fn chain_id(&self) -> Result<ChainId>;
+
+    // TODO: This is currently a u128 due to Kitchensink needing more than 64 bits for its gas limit
+    // when we implement the changes to the gas we need to adjust this to be a u64.
+    /// Returns the gas limit of the specified block.
+    fn block_gas_limit(&self, number: BlockNumberOrTag) -> Result<u128>;
+
+    /// Returns the coinbase of the specified block.
+    fn block_coinbase(&self, number: BlockNumberOrTag) -> Result<Address>;
+
+    /// Returns the difficulty of the specified block.
+    fn block_difficulty(&self, number: BlockNumberOrTag) -> Result<U256>;
+
+    /// Returns the hash of the specified block.
+    fn block_hash(&self, number: BlockNumberOrTag) -> Result<BlockHash>;
+
+    /// Returns the timestamp of the specified block,
+    fn block_timestamp(&self, number: BlockNumberOrTag) -> Result<BlockTimestamp>;
+
+    /// Returns the number of the last block.
+    fn last_block_number(&self) -> Result<BlockNumber>;
+}

crates/node/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "revive-dt-node"
+description = "abstraction over blockchain nodes"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+anyhow = { workspace = true }
+alloy = { workspace = true }
+tracing = { workspace = true }
+tokio = { workspace = true }
+
+revive-dt-node-interaction = { workspace = true }
+revive-dt-config = { workspace = true }
+
+serde = { workspace = true }
+serde_json = { workspace = true }
+
+sp-core = { workspace = true }
+sp-runtime = { workspace = true }
+
+[dev-dependencies]
+temp-dir = { workspace = true }
+tokio = { workspace = true }

crates/node/src/common.rs

@@ -0,0 +1,78 @@
+use alloy::{
+    network::{Network, TransactionBuilder},
+    providers::{
+        Provider, SendableTx,
+        fillers::{GasFiller, TxFiller},
+    },
+    transports::TransportResult,
+};
+
+#[derive(Clone, Debug)]
+pub struct FallbackGasFiller {
+    inner: GasFiller,
+    default_gas_limit: u64,
+    default_max_fee_per_gas: u128,
+    default_priority_fee: u128,
+}
+
+impl FallbackGasFiller {
+    pub fn new(
+        default_gas_limit: u64,
+        default_max_fee_per_gas: u128,
+        default_priority_fee: u128,
+    ) -> Self {
+        Self {
+            inner: GasFiller,
+            default_gas_limit,
+            default_max_fee_per_gas,
+            default_priority_fee,
+        }
+    }
+}
+
+impl<N> TxFiller<N> for FallbackGasFiller
+where
+    N: Network,
+{
+    type Fillable = Option<<GasFiller as TxFiller<N>>::Fillable>;
+
+    fn status(
+        &self,
+        tx: &<N as Network>::TransactionRequest,
+    ) -> alloy::providers::fillers::FillerControlFlow {
+        <GasFiller as TxFiller<N>>::status(&self.inner, tx)
+    }
+
+    fn fill_sync(&self, _: &mut alloy::providers::SendableTx<N>) {}
+
+    async fn prepare<P: Provider<N>>(
+        &self,
+        provider: &P,
+        tx: &<N as Network>::TransactionRequest,
+    ) -> TransportResult<Self::Fillable> {
+        // Try to fetch GasFiller’s “fillable” (gas_price, base_fee, estimate_gas, …)
+        // If it errors (i.e. tx would revert under eth_estimateGas), swallow it.
+        match self.inner.prepare(provider, tx).await {
+            Ok(fill) => Ok(Some(fill)),
+            Err(_) => Ok(None),
+        }
+    }
+
+    async fn fill(
+        &self,
+        fillable: Self::Fillable,
+        mut tx: alloy::providers::SendableTx<N>,
+    ) -> TransportResult<SendableTx<N>> {
+        if let Some(fill) = fillable {
+            // our inner GasFiller succeeded — use it
+            self.inner.fill(fill, tx).await
+        } else {
+            if let Some(builder) = tx.as_mut_builder() {
+                builder.set_gas_limit(self.default_gas_limit);
+                builder.set_max_fee_per_gas(self.default_max_fee_per_gas);
+                builder.set_max_priority_fee_per_gas(self.default_priority_fee);
+            }
+            Ok(tx)
+        }
+    }
+}

crates/node/src/geth.rs

@@ -0,0 +1,673 @@
+//! The go-ethereum node implementation.
+
+use std::{
+    fs::{File, OpenOptions, create_dir_all, remove_dir_all},
+    io::{BufRead, BufReader, Read, Write},
+    path::PathBuf,
+    process::{Child, Command, Stdio},
+    sync::atomic::{AtomicU32, Ordering},
+    time::{Duration, Instant},
+};
+
+use alloy::{
+    eips::BlockNumberOrTag,
+    genesis::{Genesis, GenesisAccount},
+    network::{Ethereum, EthereumWallet, NetworkWallet, TxSigner},
+    primitives::{Address, BlockHash, BlockNumber, BlockTimestamp, U256},
+    providers::{
+        Provider, ProviderBuilder,
+        ext::DebugApi,
+        fillers::{CachedNonceManager, ChainIdFiller, FillProvider, NonceFiller, TxFiller},
+    },
+    rpc::types::{
+        TransactionReceipt, TransactionRequest,
+        trace::geth::{DiffMode, GethDebugTracingOptions, PreStateConfig, PreStateFrame},
+    },
+    signers::Signature,
+};
+use revive_dt_config::Arguments;
+use revive_dt_node_interaction::{BlockingExecutor, EthereumNode};
+use tracing::Level;
+
+use crate::{Node, common::FallbackGasFiller};
+
+static NODE_COUNT: AtomicU32 = AtomicU32::new(0);
+
+/// The go-ethereum node instance implementation.
+///
+/// Implements helpers to initialize, spawn and wait the node.
+///
+/// Assumes dev mode and IPC only (`P2P`, `http`` etc. are kept disabled).
+///
+/// Prunes the child process and the base directory on drop.
+#[derive(Debug)]
+pub struct Instance {
+    connection_string: String,
+    base_directory: PathBuf,
+    data_directory: PathBuf,
+    logs_directory: PathBuf,
+    geth: PathBuf,
+    id: u32,
+    handle: Option<Child>,
+    network_id: u64,
+    start_timeout: u64,
+    wallet: EthereumWallet,
+    nonce_manager: CachedNonceManager,
+    /// This vector stores [`File`] objects that we use for logging which we want to flush when the
+    /// node object is dropped. We do not store them in a structured fashion at the moment (in
+    /// separate fields) as the logic that we need to apply to them is all the same regardless of
+    /// what it belongs to, we just want to flush them on [`Drop`] of the node.
+    logs_file_to_flush: Vec<File>,
+}
+
+impl Instance {
+    const BASE_DIRECTORY: &str = "geth";
+    const DATA_DIRECTORY: &str = "data";
+    const LOGS_DIRECTORY: &str = "logs";
+
+    const IPC_FILE: &str = "geth.ipc";
+    const GENESIS_JSON_FILE: &str = "genesis.json";
+
+    const READY_MARKER: &str = "IPC endpoint opened";
+    const ERROR_MARKER: &str = "Fatal:";
+
+    const GETH_STDOUT_LOG_FILE_NAME: &str = "node_stdout.log";
+    const GETH_STDERR_LOG_FILE_NAME: &str = "node_stderr.log";
+
+    /// Create the node directory and call `geth init` to configure the genesis.
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn init(&mut self, genesis: String) -> anyhow::Result<&mut Self> {
+        create_dir_all(&self.base_directory)?;
+        create_dir_all(&self.logs_directory)?;
+
+        let mut genesis = serde_json::from_str::<Genesis>(&genesis)?;
+        for signer_address in
+            <EthereumWallet as NetworkWallet<Ethereum>>::signer_addresses(&self.wallet)
+        {
+            genesis.alloc.entry(signer_address).or_insert(
+                GenesisAccount::default()
+                    .with_balance(10000000000000000000000u128.try_into().unwrap()),
+            );
+        }
+        let genesis_path = self.base_directory.join(Self::GENESIS_JSON_FILE);
+        serde_json::to_writer(File::create(&genesis_path)?, &genesis)?;
+
+        let mut child = Command::new(&self.geth)
+            .arg("init")
+            .arg("--datadir")
+            .arg(&self.data_directory)
+            .arg(genesis_path)
+            .stderr(Stdio::piped())
+            .stdout(Stdio::null())
+            .spawn()?;
+
+        let mut stderr = String::new();
+        child
+            .stderr
+            .take()
+            .expect("should be piped")
+            .read_to_string(&mut stderr)?;
+
+        if !child.wait()?.success() {
+            anyhow::bail!("failed to initialize geth node #{:?}: {stderr}", &self.id);
+        }
+
+        Ok(self)
+    }
+
+    /// Spawn the go-ethereum node child process.
+    ///
+    /// [Instance::init] must be called prior.
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn spawn_process(&mut self) -> anyhow::Result<&mut Self> {
+        // This is the `OpenOptions` that we wish to use for all of the log files that we will be
+        // opening in this method. We need to construct it in this way to:
+        // 1. Be consistent
+        // 2. Less verbose and more dry
+        // 3. Because the builder pattern uses mutable references so we need to get around that.
+        let open_options = {
+            let mut options = OpenOptions::new();
+            options.create(true).truncate(true).write(true);
+            options
+        };
+
+        let stdout_logs_file = open_options
+            .clone()
+            .open(self.geth_stdout_log_file_path())?;
+        let stderr_logs_file = open_options.open(self.geth_stderr_log_file_path())?;
+        self.handle = Command::new(&self.geth)
+            .arg("--dev")
+            .arg("--datadir")
+            .arg(&self.data_directory)
+            .arg("--ipcpath")
+            .arg(&self.connection_string)
+            .arg("--networkid")
+            .arg(self.network_id.to_string())
+            .arg("--nodiscover")
+            .arg("--maxpeers")
+            .arg("0")
+            .stderr(stderr_logs_file.try_clone()?)
+            .stdout(stdout_logs_file.try_clone()?)
+            .spawn()?
+            .into();
+
+        if let Err(error) = self.wait_ready() {
+            tracing::error!(?error, "Failed to start geth, shutting down gracefully");
+            self.shutdown()?;
+            return Err(error);
+        }
+
+        self.logs_file_to_flush
+            .extend([stderr_logs_file, stdout_logs_file]);
+
+        Ok(self)
+    }
+
+    /// Wait for the g-ethereum node child process getting ready.
+    ///
+    /// [Instance::spawn_process] must be called priorly.
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn wait_ready(&mut self) -> anyhow::Result<&mut Self> {
+        let start_time = Instant::now();
+
+        let logs_file = OpenOptions::new()
+            .read(true)
+            .write(false)
+            .append(false)
+            .truncate(false)
+            .open(self.geth_stderr_log_file_path())?;
+
+        let maximum_wait_time = Duration::from_millis(self.start_timeout);
+        let mut stderr = BufReader::new(logs_file).lines();
+        loop {
+            if let Some(Ok(line)) = stderr.next() {
+                if line.contains(Self::ERROR_MARKER) {
+                    anyhow::bail!("Failed to start geth {line}");
+                }
+                if line.contains(Self::READY_MARKER) {
+                    return Ok(self);
+                }
+            }
+            if Instant::now().duration_since(start_time) > maximum_wait_time {
+                anyhow::bail!("Timeout in starting geth");
+            }
+        }
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id), level = Level::TRACE)]
+    fn geth_stdout_log_file_path(&self) -> PathBuf {
+        self.logs_directory.join(Self::GETH_STDOUT_LOG_FILE_NAME)
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id), level = Level::TRACE)]
+    fn geth_stderr_log_file_path(&self) -> PathBuf {
+        self.logs_directory.join(Self::GETH_STDERR_LOG_FILE_NAME)
+    }
+
+    fn provider(
+        &self,
+    ) -> impl Future<
+        Output = anyhow::Result<
+            FillProvider<impl TxFiller<Ethereum>, impl Provider<Ethereum>, Ethereum>,
+        >,
+    > + 'static {
+        let connection_string = self.connection_string();
+        let wallet = self.wallet.clone();
+
+        // Note: We would like all providers to make use of the same nonce manager so that we have
+        // monotonically increasing nonces that are cached. The cached nonce manager uses Arc's in
+        // its implementation and therefore it means that when we clone it then it still references
+        // the same state.
+        let nonce_manager = self.nonce_manager.clone();
+
+        Box::pin(async move {
+            ProviderBuilder::new()
+                .disable_recommended_fillers()
+                .filler(FallbackGasFiller::new(500_000_000, 500_000_000, 1))
+                .filler(ChainIdFiller::default())
+                .filler(NonceFiller::new(nonce_manager))
+                .wallet(wallet)
+                .connect(&connection_string)
+                .await
+                .map_err(Into::into)
+        })
+    }
+}
+
+impl EthereumNode for Instance {
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn execute_transaction(
+        &self,
+        transaction: TransactionRequest,
+    ) -> anyhow::Result<alloy::rpc::types::TransactionReceipt> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            let outer_span = tracing::debug_span!("Submitting transaction", ?transaction);
+            let _outer_guard = outer_span.enter();
+
+            let provider = provider.await?;
+
+            let pending_transaction = provider.send_transaction(transaction).await?;
+            let transaction_hash = pending_transaction.tx_hash();
+
+            let span = tracing::info_span!("Awaiting transaction receipt", ?transaction_hash);
+            let _guard = span.enter();
+
+            // The following is a fix for the "transaction indexing is in progress" error that we
+            // used to get. You can find more information on this in the following GH issue in geth
+            // https://github.com/ethereum/go-ethereum/issues/28877. To summarize what's going on,
+            // before we can get the receipt of the transaction it needs to have been indexed by the
+            // node's indexer. Just because the transaction has been confirmed it doesn't mean that
+            // it has been indexed. When we call alloy's `get_receipt` it checks if the transaction
+            // was confirmed. If it has been, then it will call `eth_getTransactionReceipt` method
+            // which _might_ return the above error if the tx has not yet been indexed yet. So, we
+            // need to implement a retry mechanism for the receipt to keep retrying to get it until
+            // it eventually works, but we only do that if the error we get back is the "transaction
+            // indexing is in progress" error or if the receipt is None.
+            //
+            // At the moment we do not allow for the 60 seconds to be modified and we take it as
+            // being an implementation detail that's invisible to anything outside of this module.
+            //
+            // We allow a total of 60 retries for getting the receipt with one second between each
+            // retry and the next which means that we allow for a total of 60 seconds of waiting
+            // before we consider that we're unable to get the transaction receipt.
+            let mut retries = 0;
+            loop {
+                match provider.get_transaction_receipt(*transaction_hash).await {
+                    Ok(Some(receipt)) => {
+                        tracing::info!("Obtained the transaction receipt");
+                        break Ok(receipt);
+                    }
+                    Ok(None) => {
+                        if retries == 60 {
+                            tracing::error!(
+                                "Polled for transaction receipt for 60 seconds but failed to get it"
+                            );
+                            break Err(anyhow::anyhow!("Failed to get the transaction receipt"));
+                        } else {
+                            tracing::trace!(
+                                retries,
+                                "Sleeping for 1 second and trying to get the receipt again"
+                            );
+                            retries += 1;
+                            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+                            continue;
+                        }
+                    }
+                    Err(error) => {
+                        let error_string = error.to_string();
+                        if error_string.contains("transaction indexing is in progress") {
+                            if retries == 60 {
+                                tracing::error!(
+                                    "Polled for transaction receipt for 60 seconds but failed to get it"
+                                );
+                                break Err(error.into());
+                            } else {
+                                tracing::trace!(
+                                    retries,
+                                    "Sleeping for 1 second and trying to get the receipt again"
+                                );
+                                retries += 1;
+                                tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+                                continue;
+                            }
+                        } else {
+                            break Err(error.into());
+                        }
+                    }
+                }
+            }
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn trace_transaction(
+        &self,
+        transaction: &TransactionReceipt,
+        trace_options: GethDebugTracingOptions,
+    ) -> anyhow::Result<alloy::rpc::types::trace::geth::GethTrace> {
+        let tx_hash = transaction.transaction_hash;
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            Ok(provider
+                .await?
+                .debug_trace_transaction(tx_hash, trace_options)
+                .await?)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn state_diff(&self, transaction: &TransactionReceipt) -> anyhow::Result<DiffMode> {
+        let trace_options = GethDebugTracingOptions::prestate_tracer(PreStateConfig {
+            diff_mode: Some(true),
+            disable_code: None,
+            disable_storage: None,
+        });
+        match self
+            .trace_transaction(transaction, trace_options)?
+            .try_into_pre_state_frame()?
+        {
+            PreStateFrame::Diff(diff) => Ok(diff),
+            _ => anyhow::bail!("expected a diff mode trace"),
+        }
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn chain_id(&self) -> anyhow::Result<alloy::primitives::ChainId> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider.await?.get_chain_id().await.map_err(Into::into)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn block_gas_limit(&self, number: BlockNumberOrTag) -> anyhow::Result<u128> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider
+                .await?
+                .get_block_by_number(number)
+                .await?
+                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+                .map(|block| block.header.gas_limit as _)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn block_coinbase(&self, number: BlockNumberOrTag) -> anyhow::Result<Address> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider
+                .await?
+                .get_block_by_number(number)
+                .await?
+                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+                .map(|block| block.header.beneficiary)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn block_difficulty(&self, number: BlockNumberOrTag) -> anyhow::Result<U256> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider
+                .await?
+                .get_block_by_number(number)
+                .await?
+                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+                .map(|block| block.header.difficulty)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn block_hash(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockHash> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider
+                .await?
+                .get_block_by_number(number)
+                .await?
+                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+                .map(|block| block.header.hash)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn block_timestamp(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockTimestamp> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider
+                .await?
+                .get_block_by_number(number)
+                .await?
+                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+                .map(|block| block.header.timestamp)
+        })?
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn last_block_number(&self) -> anyhow::Result<BlockNumber> {
+        let provider = self.provider();
+        BlockingExecutor::execute(async move {
+            provider.await?.get_block_number().await.map_err(Into::into)
+        })?
+    }
+}
+
+impl Node for Instance {
+    fn new(
+        config: &Arguments,
+        additional_signers: impl IntoIterator<Item: TxSigner<Signature> + Send + Sync + 'static>,
+    ) -> Self {
+        let geth_directory = config.directory().join(Self::BASE_DIRECTORY);
+        let id = NODE_COUNT.fetch_add(1, Ordering::SeqCst);
+        let base_directory = geth_directory.join(id.to_string());
+
+        let mut wallet = config.wallet();
+        for signer in additional_signers {
+            wallet.register_signer(signer);
+        }
+
+        Self {
+            connection_string: base_directory.join(Self::IPC_FILE).display().to_string(),
+            data_directory: base_directory.join(Self::DATA_DIRECTORY),
+            logs_directory: base_directory.join(Self::LOGS_DIRECTORY),
+            base_directory,
+            geth: config.geth.clone(),
+            id,
+            handle: None,
+            network_id: config.network_id,
+            start_timeout: config.geth_start_timeout,
+            wallet,
+            // We know that we only need to be storing 2 files so we can specify that when creating
+            // the vector. It's the stdout and stderr of the geth node.
+            logs_file_to_flush: Vec::with_capacity(2),
+            nonce_manager: Default::default(),
+        }
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn connection_string(&self) -> String {
+        self.connection_string.clone()
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn shutdown(&mut self) -> anyhow::Result<()> {
+        // Terminate the processes in a graceful manner to allow for the output to be flushed.
+        if let Some(mut child) = self.handle.take() {
+            child
+                .kill()
+                .map_err(|error| anyhow::anyhow!("Failed to kill the geth process: {error:?}"))?;
+        }
+
+        // Flushing the files that we're using for keeping the logs before shutdown.
+        for file in self.logs_file_to_flush.iter_mut() {
+            file.flush()?
+        }
+
+        // Remove the node's database so that subsequent runs do not run on the same database. We
+        // ignore the error just in case the directory didn't exist in the first place and therefore
+        // there's nothing to be deleted.
+        let _ = remove_dir_all(self.base_directory.join(Self::DATA_DIRECTORY));
+
+        Ok(())
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn spawn(&mut self, genesis: String) -> anyhow::Result<()> {
+        self.init(genesis)?.spawn_process()?;
+        Ok(())
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn version(&self) -> anyhow::Result<String> {
+        let output = Command::new(&self.geth)
+            .arg("--version")
+            .stdin(Stdio::null())
+            .stdout(Stdio::piped())
+            .stderr(Stdio::null())
+            .spawn()?
+            .wait_with_output()?
+            .stdout;
+        Ok(String::from_utf8_lossy(&output).into())
+    }
+
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn matches_target(&self, targets: Option<&[String]>) -> bool {
+        match targets {
+            None => true,
+            Some(targets) => targets.iter().any(|str| str.as_str() == "evm"),
+        }
+    }
+}
+
+impl Drop for Instance {
+    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    fn drop(&mut self) {
+        self.shutdown().expect("Failed to shutdown")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use revive_dt_config::Arguments;
+
+    use alloy::signers::local::PrivateKeySigner;
+    use temp_dir::TempDir;
+
+    use crate::{GENESIS_JSON, Node};
+
+    use super::*;
+
+    fn test_config() -> (Arguments, TempDir) {
+        let mut config = Arguments::default();
+        let temp_dir = TempDir::new().unwrap();
+        config.working_directory = temp_dir.path().to_path_buf().into();
+
+        (config, temp_dir)
+    }
+
+    fn new_node() -> (Instance, TempDir) {
+        let (args, temp_dir) = test_config();
+        let mut node = Instance::new(&args, Vec::<PrivateKeySigner>::with_capacity(0));
+        node.init(GENESIS_JSON.to_owned())
+            .expect("Failed to initialize the node")
+            .spawn_process()
+            .expect("Failed to spawn the node process");
+        (node, temp_dir)
+    }
+
+    #[test]
+    fn init_works() {
+        Instance::new(&test_config().0, Vec::<PrivateKeySigner>::with_capacity(0))
+            .init(GENESIS_JSON.to_string())
+            .unwrap();
+    }
+
+    #[test]
+    fn spawn_works() {
+        Instance::new(&test_config().0, Vec::<PrivateKeySigner>::with_capacity(0))
+            .spawn(GENESIS_JSON.to_string())
+            .unwrap();
+    }
+
+    #[test]
+    fn version_works() {
+        let version = Instance::new(&test_config().0, Vec::<PrivateKeySigner>::with_capacity(0))
+            .version()
+            .unwrap();
+        assert!(
+            version.starts_with("geth version"),
+            "expected version string, got: '{version}'"
+        );
+    }
+
+    #[test]
+    fn can_get_chain_id_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let chain_id = node.chain_id();
+
+        // Assert
+        let chain_id = chain_id.expect("Failed to get the chain id");
+        assert_eq!(chain_id, 420_420_420);
+    }
+
+    #[test]
+    fn can_get_gas_limit_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let gas_limit = node.block_gas_limit(BlockNumberOrTag::Latest);
+
+        // Assert
+        let gas_limit = gas_limit.expect("Failed to get the gas limit");
+        assert_eq!(gas_limit, u32::MAX as u128)
+    }
+
+    #[test]
+    fn can_get_coinbase_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let coinbase = node.block_coinbase(BlockNumberOrTag::Latest);
+
+        // Assert
+        let coinbase = coinbase.expect("Failed to get the coinbase");
+        assert_eq!(coinbase, Address::new([0xFF; 20]))
+    }
+
+    #[test]
+    fn can_get_block_difficulty_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let block_difficulty = node.block_difficulty(BlockNumberOrTag::Latest);
+
+        // Assert
+        let block_difficulty = block_difficulty.expect("Failed to get the block difficulty");
+        assert_eq!(block_difficulty, U256::ZERO)
+    }
+
+    #[test]
+    fn can_get_block_hash_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let block_hash = node.block_hash(BlockNumberOrTag::Latest);
+
+        // Assert
+        let _ = block_hash.expect("Failed to get the block hash");
+    }
+
+    #[test]
+    fn can_get_block_timestamp_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let block_timestamp = node.block_timestamp(BlockNumberOrTag::Latest);
+
+        // Assert
+        let _ = block_timestamp.expect("Failed to get the block timestamp");
+    }
+
+    #[test]
+    fn can_get_block_number_from_node() {
+        // Arrange
+        let (node, _temp_dir) = new_node();
+
+        // Act
+        let block_number = node.last_block_number();
+
+        // Assert
+        let block_number = block_number.expect("Failed to get the block number");
+        assert_eq!(block_number, 0)
+    }
+}

crates/node/src/lib.rs

@@ -0,0 +1,42 @@
+//! This crate implements the testing nodes.
+
+use alloy::{network::TxSigner, signers::Signature};
+use revive_dt_config::Arguments;
+use revive_dt_node_interaction::EthereumNode;
+
+pub mod common;
+pub mod geth;
+pub mod kitchensink;
+pub mod pool;
+
+/// The default genesis configuration.
+pub const GENESIS_JSON: &str = include_str!("../../../genesis.json");
+
+/// An abstract interface for testing nodes.
+pub trait Node: EthereumNode {
+    /// Create a new uninitialized instance.
+    fn new(
+        config: &Arguments,
+        additional_signers: impl IntoIterator<Item: TxSigner<Signature> + Send + Sync + 'static>,
+    ) -> Self;
+
+    /// Spawns a node configured according to the genesis json.
+    ///
+    /// Blocking until it's ready to accept transactions.
+    fn spawn(&mut self, genesis: String) -> anyhow::Result<()>;
+
+    /// Prune the node instance and related data.
+    ///
+    /// Blocking until it's completely stopped.
+    fn shutdown(&mut self) -> anyhow::Result<()>;
+
+    /// Returns the nodes connection string.
+    fn connection_string(&self) -> String;
+
+    /// Returns the node version.
+    fn version(&self) -> anyhow::Result<String>;
+
+    /// Given a list of targets from the metadata file, this function determines if the metadata
+    /// file can be ran on this node or not.
+    fn matches_target(&self, targets: Option<&[String]>) -> bool;
+}

crates/node/src/pool.rs

@@ -0,0 +1,83 @@
+//! This crate implements concurrent handling of testing node.
+
+use std::{
+    fs::read_to_string,
+    sync::atomic::{AtomicUsize, Ordering},
+    thread,
+};
+
+use alloy::{network::TxSigner, signers::Signature};
+use anyhow::Context;
+use revive_dt_config::Arguments;
+
+use crate::Node;
+
+/// The node pool starts one or more [Node] which then can be accessed
+/// in a round robbin fasion.
+pub struct NodePool<T> {
+    next: AtomicUsize,
+    nodes: Vec<T>,
+}
+
+impl<T> NodePool<T>
+where
+    T: Node + Send + 'static,
+{
+    /// Create a new Pool. This will start as many nodes as there are workers in `config`.
+    pub fn new(
+        config: &Arguments,
+        additional_signers: impl IntoIterator<Item: TxSigner<Signature> + Send + Sync + 'static>
+        + Clone
+        + Send
+        + Sync
+        + 'static,
+    ) -> anyhow::Result<Self> {
+        let nodes = config.workers;
+        let genesis = read_to_string(&config.genesis_file).context(format!(
+            "can not read genesis file: {}",
+            config.genesis_file.display()
+        ))?;
+
+        let mut handles = Vec::with_capacity(nodes);
+        for _ in 0..nodes {
+            let config = config.clone();
+            let genesis = genesis.clone();
+            let additional_signers = additional_signers.clone();
+            handles.push(thread::spawn(move || {
+                spawn_node::<T>(&config, additional_signers, genesis)
+            }));
+        }
+
+        let mut nodes = Vec::with_capacity(nodes);
+        for handle in handles {
+            nodes.push(
+                handle
+                    .join()
+                    .map_err(|error| anyhow::anyhow!("failed to spawn node: {:?}", error))?
+                    .map_err(|error| anyhow::anyhow!("node failed to spawn: {error}"))?,
+            );
+        }
+
+        Ok(Self {
+            nodes,
+            next: Default::default(),
+        })
+    }
+
+    /// Get a handle to the next node.
+    pub fn round_robbin(&self) -> &T {
+        let current = self.next.fetch_add(1, Ordering::SeqCst) % self.nodes.len();
+        self.nodes.get(current).unwrap()
+    }
+}
+
+fn spawn_node<T: Node + Send>(
+    args: &Arguments,
+    additional_signers: impl IntoIterator<Item: TxSigner<Signature> + Send + Sync + 'static>,
+    genesis: String,
+) -> anyhow::Result<T> {
+    let mut node = T::new(args, additional_signers);
+    tracing::info!("starting node: {}", node.connection_string());
+    node.spawn(genesis)?;
+    Ok(node)
+}

crates/report/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "revive-dt-report"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+revive-dt-config = { workspace = true }
+revive-dt-format = { workspace = true }
+
+anyhow = { workspace = true }
+tracing = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+revive-solc-json-interface = { workspace = true }

crates/report/src/analyzer.rs

@@ -0,0 +1,94 @@
+//! The report analyzer enriches the raw report data.
+
+use serde::{Deserialize, Serialize};
+
+use crate::reporter::CompilationTask;
+
+/// Provides insights into how well the compilers perform.
+#[derive(Clone, Default, Debug, Serialize, Deserialize, PartialEq, PartialOrd)]
+pub struct CompilerStatistics {
+    /// The sum of contracts observed.
+    pub n_contracts: usize,
+    /// The mean size of compiled contracts.
+    pub mean_code_size: usize,
+    /// The mean size of the optimized YUL IR.
+    pub mean_yul_size: usize,
+    /// Is a proxy because the YUL also containes a lot of comments.
+    pub yul_to_bytecode_size_ratio: f32,
+}
+
+impl CompilerStatistics {
+    /// Cumulatively update the statistics with the next compiler task.
+    pub fn sample(&mut self, compilation_task: &CompilationTask) {
+        let Some(output) = &compilation_task.json_output else {
+            return;
+        };
+
+        let Some(contracts) = &output.contracts else {
+            return;
+        };
+
+        for (_solidity, contracts) in contracts.iter() {
+            for (_name, contract) in contracts.iter() {
+                let Some(evm) = &contract.evm else {
+                    continue;
+                };
+                let Some(deploy_code) = &evm.deployed_bytecode else {
+                    continue;
+                };
+
+                // The EVM bytecode can be unlinked and thus is not necessarily a decodable hex
+                // string; for our statistics this is a good enough approximation.
+                let bytecode_size = deploy_code.object.len() / 2;
+
+                let yul_size = contract
+                    .ir_optimized
+                    .as_ref()
+                    .expect("if the contract has a deploy code it should also have the opimized IR")
+                    .len();
+
+                self.update_sizes(bytecode_size, yul_size);
+            }
+        }
+    }
+
+    /// Updates the size statistics cumulatively.
+    fn update_sizes(&mut self, bytecode_size: usize, yul_size: usize) {
+        let n_previous = self.n_contracts;
+        let n_current = self.n_contracts + 1;
+
+        self.n_contracts = n_current;
+
+        self.mean_code_size = (n_previous * self.mean_code_size + bytecode_size) / n_current;
+        self.mean_yul_size = (n_previous * self.mean_yul_size + yul_size) / n_current;
+
+        if self.mean_code_size > 0 {
+            self.yul_to_bytecode_size_ratio =
+                self.mean_yul_size as f32 / self.mean_code_size as f32;
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::CompilerStatistics;
+
+    #[test]
+    fn compiler_statistics() {
+        let mut received = CompilerStatistics::default();
+        received.update_sizes(0, 0);
+        received.update_sizes(3, 37);
+        received.update_sizes(123, 456);
+
+        let mean_code_size = 41; // rounding error from integer truncation
+        let mean_yul_size = 164;
+        let expected = CompilerStatistics {
+            n_contracts: 3,
+            mean_code_size,
+            mean_yul_size,
+            yul_to_bytecode_size_ratio: mean_yul_size as f32 / mean_code_size as f32,
+        };
+
+        assert_eq!(received, expected);
+    }
+}

crates/report/src/lib.rs

@@ -0,0 +1,4 @@
+//! The revive differential tests reporting facility.
+
+pub mod analyzer;
+pub mod reporter;

crates/report/src/reporter.rs

@@ -0,0 +1,243 @@
+//! The reporter is the central place observing test execution by collecting data.
+//!
+//! The data collected gives useful insights into the outcome of the test run
+//! and helps identifying and reproducing failing cases.
+
+use std::{
+    collections::HashMap,
+    fs::{self, File, create_dir_all},
+    path::PathBuf,
+    sync::{Mutex, OnceLock},
+    time::{SystemTime, UNIX_EPOCH},
+};
+
+use anyhow::Context;
+use serde::{Deserialize, Serialize};
+
+use revive_dt_config::{Arguments, TestingPlatform};
+use revive_dt_format::{corpus::Corpus, mode::SolcMode};
+use revive_solc_json_interface::{SolcStandardJsonInput, SolcStandardJsonOutput};
+
+use crate::analyzer::CompilerStatistics;
+
+pub(crate) static REPORTER: OnceLock<Mutex<Report>> = OnceLock::new();
+
+/// The `Report` datastructure stores all relevant inforamtion required for generating reports.
+#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+pub struct Report {
+    /// The configuration used during the test.
+    pub config: Arguments,
+    /// The observed test corpora.
+    pub corpora: Vec<Corpus>,
+    /// The observed test definitions.
+    pub metadata_files: Vec<PathBuf>,
+    /// The observed compilation results.
+    pub compiler_results: HashMap<TestingPlatform, Vec<CompilationResult>>,
+    /// The observed compilation statistics.
+    pub compiler_statistics: HashMap<TestingPlatform, CompilerStatistics>,
+    /// The file name this is serialized to.
+    #[serde(skip)]
+    directory: PathBuf,
+}
+
+/// Contains a compiled contract.
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct CompilationTask {
+    /// The observed compiler input.
+    pub json_input: SolcStandardJsonInput,
+    /// The observed compiler output.
+    pub json_output: Option<SolcStandardJsonOutput>,
+    /// The observed compiler mode.
+    pub mode: SolcMode,
+    /// The observed compiler version.
+    pub compiler_version: String,
+    /// The observed error, if any.
+    pub error: Option<String>,
+}
+
+/// Represents a report about a compilation task.
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct CompilationResult {
+    /// The observed compilation task.
+    pub compilation_task: CompilationTask,
+    /// The linked span.
+    pub span: Span,
+}
+
+/// The [Span] struct indicates the context of what is being reported.
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct Span {
+    /// The corpus index this belongs to.
+    corpus: usize,
+    /// The metadata file this belongs to.
+    metadata_file: usize,
+    /// The index of the case definition this belongs to.
+    case: usize,
+    /// The index of the case input this belongs to.
+    input: usize,
+}
+
+impl Report {
+    /// The file name where this report will be written to.
+    pub const FILE_NAME: &str = "report.json";
+
+    /// The [Span] is expected to initialize the reporter by providing the config.
+    const INITIALIZED_VIA_SPAN: &str = "requires a Span which initializes the reporter";
+
+    /// Create a new [Report].
+    fn new(config: Arguments) -> anyhow::Result<Self> {
+        let now = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap()
+            .as_millis();
+
+        let directory = config.directory().join("report").join(format!("{now}"));
+        if !directory.exists() {
+            create_dir_all(&directory)?;
+        }
+
+        Ok(Self {
+            config,
+            directory,
+            ..Default::default()
+        })
+    }
+
+    /// Add a compilation task to the report.
+    pub fn compilation(span: Span, platform: TestingPlatform, compilation_task: CompilationTask) {
+        let mut report = REPORTER
+            .get()
+            .expect(Report::INITIALIZED_VIA_SPAN)
+            .lock()
+            .unwrap();
+
+        report
+            .compiler_statistics
+            .entry(platform)
+            .or_default()
+            .sample(&compilation_task);
+
+        report
+            .compiler_results
+            .entry(platform)
+            .or_default()
+            .push(CompilationResult {
+                compilation_task,
+                span,
+            });
+    }
+
+    /// Write the report to disk.
+    pub fn save() -> anyhow::Result<()> {
+        let Some(reporter) = REPORTER.get() else {
+            return Ok(());
+        };
+        let report = reporter.lock().unwrap();
+
+        if let Err(error) = report.write_to_file() {
+            anyhow::bail!("can not write report: {error}");
+        }
+
+        if report.config.extract_problems {
+            if let Err(error) = report.save_compiler_problems() {
+                anyhow::bail!("can not write compiler problems: {error}");
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Write compiler problems to disk for later debugging.
+    pub fn save_compiler_problems(&self) -> anyhow::Result<()> {
+        for (platform, results) in self.compiler_results.iter() {
+            for result in results {
+                // ignore if there were no errors
+                if result.compilation_task.error.is_none()
+                    && result
+                        .compilation_task
+                        .json_output
+                        .as_ref()
+                        .and_then(|output| output.errors.as_ref())
+                        .map(|errors| errors.is_empty())
+                        .unwrap_or(true)
+                {
+                    continue;
+                }
+
+                let path = &self.metadata_files[result.span.metadata_file]
+                    .parent()
+                    .unwrap()
+                    .join(format!("{platform}_errors"));
+                if !path.exists() {
+                    create_dir_all(path)?;
+                }
+
+                if let Some(error) = result.compilation_task.error.as_ref() {
+                    fs::write(path.join("compiler_error.txt"), error)?;
+                }
+
+                if let Some(errors) = result.compilation_task.json_output.as_ref() {
+                    let file = File::create(path.join("compiler_output.txt"))?;
+                    serde_json::to_writer_pretty(file, &errors)?;
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    fn write_to_file(&self) -> anyhow::Result<()> {
+        let path = self.directory.join(Self::FILE_NAME);
+
+        let file = File::create(&path).context(path.display().to_string())?;
+        serde_json::to_writer_pretty(file, &self)?;
+
+        tracing::info!("report written to: {}", path.display());
+
+        Ok(())
+    }
+}
+
+impl Span {
+    /// Create a new [Span] with case and input index at 0.
+    ///
+    /// Initializes the reporting facility on the first call.
+    pub fn new(corpus: Corpus, config: Arguments) -> anyhow::Result<Self> {
+        let report = Mutex::new(Report::new(config)?);
+        let mut reporter = REPORTER.get_or_init(|| report).lock().unwrap();
+        reporter.corpora.push(corpus);
+
+        Ok(Self {
+            corpus: reporter.corpora.len() - 1,
+            metadata_file: 0,
+            case: 0,
+            input: 0,
+        })
+    }
+
+    /// Advance to the next metadata file: Resets the case input index to 0.
+    pub fn next_metadata(&mut self, metadata_file: PathBuf) {
+        let mut reporter = REPORTER
+            .get()
+            .expect(Report::INITIALIZED_VIA_SPAN)
+            .lock()
+            .unwrap();
+
+        reporter.metadata_files.push(metadata_file);
+
+        self.metadata_file = reporter.metadata_files.len() - 1;
+        self.case = 0;
+        self.input = 0;
+    }
+
+    /// Advance to the next case: Increas the case index by one and resets the input index to 0.
+    pub fn next_case(&mut self) {
+        self.case += 1;
+        self.input = 0;
+    }
+
+    /// Advance to the next input.
+    pub fn next_input(&mut self) {
+        self.input += 1;
+    }
+}

crates/solc-binaries/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "revive-dt-solc-binaries"
+description = "Download and cache solc binaries"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+anyhow = { workspace = true }
+hex = { workspace = true }
+tracing = { workspace = true }
+reqwest = { workspace = true }
+semver = { workspace = true }
+serde = { workspace = true }
+sha2 = { workspace = true }

crates/solc-binaries/src/cache.rs

@@ -0,0 +1,71 @@
+//! Helper for caching the solc binaries.
+
+use std::{
+    collections::HashSet,
+    fs::{File, create_dir_all},
+    io::{BufWriter, Write},
+    os::unix::fs::PermissionsExt,
+    path::{Path, PathBuf},
+    sync::{LazyLock, Mutex},
+};
+
+use crate::download::GHDownloader;
+
+pub const SOLC_CACHE_DIRECTORY: &str = "solc";
+pub(crate) static SOLC_CACHER: LazyLock<Mutex<HashSet<PathBuf>>> = LazyLock::new(Default::default);
+
+pub(crate) fn get_or_download(
+    working_directory: &Path,
+    downloader: &GHDownloader,
+) -> anyhow::Result<PathBuf> {
+    let target_directory = working_directory
+        .join(SOLC_CACHE_DIRECTORY)
+        .join(downloader.version.to_string());
+    let target_file = target_directory.join(downloader.target);
+
+    let mut cache = SOLC_CACHER.lock().unwrap();
+    if cache.contains(&target_file) {
+        tracing::debug!("using cached solc: {}", target_file.display());
+        return Ok(target_file);
+    }
+
+    create_dir_all(target_directory)?;
+    download_to_file(&target_file, downloader)?;
+    cache.insert(target_file.clone());
+
+    Ok(target_file)
+}
+
+fn download_to_file(path: &Path, downloader: &GHDownloader) -> anyhow::Result<()> {
+    tracing::info!("caching file: {}", path.display());
+
+    let Ok(file) = File::create_new(path) else {
+        tracing::debug!("cache file already exists: {}", path.display());
+        return Ok(());
+    };
+
+    #[cfg(unix)]
+    {
+        let mut permissions = file.metadata()?.permissions();
+        permissions.set_mode(permissions.mode() | 0o111);
+        file.set_permissions(permissions)?;
+    }
+
+    let mut file = BufWriter::new(file);
+    file.write_all(&downloader.download()?)?;
+    file.flush()?;
+    drop(file);
+
+    #[cfg(target_os = "macos")]
+    std::process::Command::new("xattr")
+        .arg("-d")
+        .arg("com.apple.quarantine")
+        .arg(path)
+        .stderr(std::process::Stdio::null())
+        .stdout(std::process::Stdio::null())
+        .stdout(std::process::Stdio::null())
+        .spawn()?
+        .wait()?;
+
+    Ok(())
+}

crates/solc-binaries/src/download.rs

@@ -0,0 +1,134 @@
+//! This module downloads solc binaries.
+
+use std::{
+    collections::HashMap,
+    sync::{LazyLock, Mutex},
+};
+
+use semver::Version;
+use sha2::{Digest, Sha256};
+
+use crate::list::List;
+
+pub static LIST_CACHE: LazyLock<Mutex<HashMap<&'static str, List>>> =
+    LazyLock::new(Default::default);
+
+impl List {
+    pub const LINUX_URL: &str = "https://binaries.soliditylang.org/linux-amd64/list.json";
+    pub const WINDOWS_URL: &str = "https://binaries.soliditylang.org/windows-amd64/list.json";
+    pub const MACOSX_URL: &str = "https://binaries.soliditylang.org/macosx-amd64/list.json";
+    pub const WASM_URL: &str = "https://binaries.soliditylang.org/wasm/list.json";
+
+    /// Try to downloads the list from the given URL.
+    ///
+    /// Caches the list retrieved from the `url` into [LIST_CACHE],
+    /// subsequent calls with the same `url` will return the cached list.
+    pub fn download(url: &'static str) -> anyhow::Result<Self> {
+        if let Some(list) = LIST_CACHE.lock().unwrap().get(url) {
+            return Ok(list.clone());
+        }
+
+        let body: List = reqwest::blocking::get(url)?.json()?;
+
+        LIST_CACHE.lock().unwrap().insert(url, body.clone());
+
+        Ok(body)
+    }
+}
+
+/// Download solc binaries from GitHub releases (IPFS links aren't reliable).
+#[derive(Clone, Debug)]
+pub struct GHDownloader {
+    pub version: Version,
+    pub target: &'static str,
+    pub list: &'static str,
+}
+
+impl GHDownloader {
+    pub const BASE_URL: &str = "https://github.com/ethereum/solidity/releases/download";
+
+    pub const LINUX_NAME: &str = "solc-static-linux";
+    pub const MACOSX_NAME: &str = "solc-macos";
+    pub const WINDOWS_NAME: &str = "solc-windows.exe";
+    pub const WASM_NAME: &str = "soljson.js";
+
+    fn new(version: Version, target: &'static str, list: &'static str) -> Self {
+        Self {
+            version,
+            target,
+            list,
+        }
+    }
+
+    pub fn linux(version: Version) -> Self {
+        Self::new(version, Self::LINUX_NAME, List::LINUX_URL)
+    }
+
+    pub fn macosx(version: Version) -> Self {
+        Self::new(version, Self::MACOSX_NAME, List::MACOSX_URL)
+    }
+
+    pub fn windows(version: Version) -> Self {
+        Self::new(version, Self::WINDOWS_NAME, List::WINDOWS_URL)
+    }
+
+    pub fn wasm(version: Version) -> Self {
+        Self::new(version, Self::WASM_NAME, List::WASM_URL)
+    }
+
+    /// Returns the download link.
+    pub fn url(&self) -> String {
+        format!("{}/v{}/{}", Self::BASE_URL, &self.version, &self.target)
+    }
+
+    /// Download the solc binary.
+    ///
+    /// Errors out if the download fails or the digest of the downloaded file
+    /// mismatches the expected digest from the release [List].
+    pub fn download(&self) -> anyhow::Result<Vec<u8>> {
+        tracing::info!("downloading solc: {self:?}");
+        let expected_digest = List::download(self.list)?
+            .builds
+            .iter()
+            .find(|build| build.version == self.version)
+            .ok_or_else(|| anyhow::anyhow!("solc v{} not found builds", self.version))
+            .map(|b| b.sha256.strip_prefix("0x").unwrap_or(&b.sha256).to_string())?;
+
+        let file = reqwest::blocking::get(self.url())?.bytes()?.to_vec();
+
+        if hex::encode(Sha256::digest(&file)) != expected_digest {
+            anyhow::bail!("sha256 mismatch for solc version {}", self.version);
+        }
+
+        Ok(file)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{download::GHDownloader, list::List};
+
+    #[test]
+    fn try_get_windows() {
+        let version = List::download(List::WINDOWS_URL).unwrap().latest_release;
+        GHDownloader::windows(version).download().unwrap();
+    }
+
+    #[test]
+    fn try_get_macosx() {
+        let version = List::download(List::MACOSX_URL).unwrap().latest_release;
+        GHDownloader::macosx(version).download().unwrap();
+    }
+
+    #[test]
+    fn try_get_linux() {
+        let version = List::download(List::LINUX_URL).unwrap().latest_release;
+        GHDownloader::linux(version).download().unwrap();
+    }
+
+    #[test]
+    fn try_get_wasm() {
+        let version = List::download(List::WASM_URL).unwrap().latest_release;
+        GHDownloader::wasm(version).download().unwrap();
+    }
+}

crates/solc-binaries/src/lib.rs

@@ -0,0 +1,39 @@
+//! This crates provides serializable Rust type definitions for the [solc binary lists][0]
+//! and download helpers.
+//!
+//! [0]: https://binaries.soliditylang.org
+
+use std::path::{Path, PathBuf};
+
+use cache::get_or_download;
+use download::GHDownloader;
+use semver::Version;
+
+pub mod cache;
+pub mod download;
+pub mod list;
+
+/// Downloads the solc binary for Wasm is `wasm` is set, otherwise for
+/// the target platform.
+///
+/// Subsequent calls for the same version will use a cached artifact
+/// and not download it again.
+pub fn download_solc(
+    cache_directory: &Path,
+    version: Version,
+    wasm: bool,
+) -> anyhow::Result<PathBuf> {
+    let downloader = if wasm {
+        GHDownloader::wasm(version)
+    } else if cfg!(target_os = "linux") {
+        GHDownloader::linux(version)
+    } else if cfg!(target_os = "macos") {
+        GHDownloader::macosx(version)
+    } else if cfg!(target_os = "windows") {
+        GHDownloader::windows(version)
+    } else {
+        unimplemented!()
+    };
+
+    get_or_download(cache_directory, &downloader)
+}

crates/solc-binaries/src/list.rs

@@ -0,0 +1,26 @@
+//! Rust type definitions for the solc binary lists.
+
+use std::{collections::HashMap, path::PathBuf};
+
+use semver::Version;
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize, Clone, Eq, PartialEq)]
+pub struct List {
+    pub builds: Vec<Build>,
+    pub releases: HashMap<Version, String>,
+    #[serde(rename = "latestRelease")]
+    pub latest_release: Version,
+}
+
+#[derive(Debug, Deserialize, Clone, Eq, PartialEq)]
+pub struct Build {
+    pub path: PathBuf,
+    pub version: Version,
+    pub build: String,
+    #[serde(rename = "longVersion")]
+    pub long_version: String,
+    pub keccak256: String,
+    pub sha256: String,
+    pub urls: Vec<String>,
+}

genesis.json

@@ -0,0 +1,41 @@
+{
+    "config": {
+        "chainId": 420420420,
+        "homesteadBlock": 0,
+        "eip150Block": 0,
+        "eip155Block": 0,
+        "eip158Block": 0,
+        "byzantiumBlock": 0,
+        "constantinopleBlock": 0,
+        "petersburgBlock": 0,
+        "istanbulBlock": 0,
+        "berlinBlock": 0,
+        "londonBlock": 0,
+        "arrowGlacierBlock": 0,
+        "grayGlacierBlock": 0,
+        "shanghaiTime": 0,
+        "cancunTime": 0,
+        "terminalTotalDifficulty": 0,
+        "terminalTotalDifficultyPassed": true,
+        "blobSchedule": {
+            "cancun": {
+                "target": 3,
+                "max": 6,
+                "baseFeeUpdateFraction": 3338477
+            }
+        }
+    },
+    "coinbase": "0xffffffffffffffffffffffffffffffffffffffff",
+    "difficulty": "0x00",
+    "extraData": "",
+    "gasLimit": "0xffffffff",
+    "nonce": "0x0000000000000042",
+    "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "timestamp": "0x00",
+    "alloc": {
+        "90F8bf6A479f320ead074411a4B0e7944Ea8c9C1": {
+            "balance": "10000000000000000000000"
+        }
+    }
+}