decl_storage! check for duplicate config()/get() (#3936)

* `decl_storage!` check for duplicate `config()`/`get()`

* Fix tests

substrate/srml/support/test/tests/decl_storage_ui.rs

@@ -0,0 +1,24 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+#[test]
+fn decl_storage_ui() {
+	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
+	std::env::set_var("BUILD_DUMMY_WASM_BINARY", "1");
+
+	let t = trybuild::TestCases::new();
+	t.compile_fail("tests/decl_storage_ui/*.rs");
+}

substrate/srml/support/test/tests/decl_storage_ui/config_duplicate.rs

@@ -0,0 +1,33 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+pub trait Trait {
+	type Origin;
+	type BlockNumber: codec::Codec + codec::EncodeLike + Default + Clone;
+}
+
+support::decl_module! {
+	pub struct Module<T: Trait> for enum Call where origin: T::Origin {}
+}
+
+support::decl_storage!{
+	trait Store for Module<T: Trait> as FinalKeysNone {
+		pub Value config(value): u32;
+		pub Value2 config(value): u32;
+	}
+}
+
+fn main() {}

substrate/srml/support/test/tests/decl_storage_ui/config_duplicate.stderr

@@ -0,0 +1,5 @@
+error: `config()`/`get()` with the same name already defined.
+  --> $DIR/config_duplicate.rs:29:21
+   |
+29 |         pub Value2 config(value): u32;
+   |                           ^^^^^

substrate/srml/support/test/tests/decl_storage_ui/config_get_duplicate.rs

@@ -0,0 +1,33 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+pub trait Trait {
+	type Origin;
+	type BlockNumber: codec::Codec + codec::EncodeLike + Default + Clone;
+}
+
+support::decl_module! {
+	pub struct Module<T: Trait> for enum Call where origin: T::Origin {}
+}
+
+support::decl_storage!{
+	trait Store for Module<T: Trait> as FinalKeysNone {
+		pub Value get(fn value) config(): u32;
+		pub Value2 config(value): u32;
+	}
+}
+
+fn main() {}

substrate/srml/support/test/tests/decl_storage_ui/config_get_duplicate.stderr

@@ -0,0 +1,5 @@
+error: `config()`/`get()` with the same name already defined.
+  --> $DIR/config_get_duplicate.rs:29:21
+   |
+29 |         pub Value2 config(value): u32;
+   |                           ^^^^^

substrate/srml/support/test/tests/decl_storage_ui/get_duplicate.rs

@@ -0,0 +1,33 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+pub trait Trait {
+	type Origin;
+	type BlockNumber: codec::Codec + codec::EncodeLike + Default + Clone;
+}
+
+support::decl_module! {
+	pub struct Module<T: Trait> for enum Call where origin: T::Origin {}
+}
+
+support::decl_storage!{
+	trait Store for Module<T: Trait> as FinalKeysNone {
+		pub Value get(fn value) config(): u32;
+		pub Value2 get(fn value) config(): u32;
+	}
+}
+
+fn main() {}

substrate/srml/support/test/tests/decl_storage_ui/get_duplicate.stderr

@@ -0,0 +1,5 @@
+error: `config()`/`get()` with the same name already defined.
+  --> $DIR/get_duplicate.rs:29:21
+   |
+29 |         pub Value2 get(fn value) config(): u32;
+   |                           ^^^^^

substrate/srml/support/test/tests/instance.rs

@@ -13,6 +13,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
 #![recursion_limit="128"]
 
 use sr_primitives::{generic, BuildStorage, traits::{BlakeTwo256, Block as _, Verify}};

substrate/srml/support/test/tests/reserved_keyword.rs

@@ -0,0 +1,24 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+#[test]
+fn reserved_keyword() {
+	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
+	std::env::set_var("BUILD_DUMMY_WASM_BINARY", "1");
+
+	let t = trybuild::TestCases::new();
+	t.compile_fail("tests/reserved_keyword/*.rs");
+}