Split Indices module from Balances (#1404)

* Indices module

* Remove indices stuff from balances

* Rejob node, move Lookup into system.

* Fix up some modules.

* Fix democracy tests

* Fix staking tests

* Fix more tests

* Final test fixes

* Bump runtime versions

* Assets uses compact dispatchers

* Contracts module uses indexed addressing

* Democracy has more compact encoding

* Example now demonstrates compact eencoding

* Sudo uses indexed address

* Upgrade key also uses indexed lookups

* Assets more compact types.

* Fix test

* Rebuild runtime, whitespace

* Remove TOODs

* Remove TODOs

* Add a couple of tests back to balances.

* Update lib.rs

* Update lib.rs

substrate/srml/indices/src/mock.rs

@@ -0,0 +1,102 @@
+// Copyright 2018 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 utilities
+
+#![cfg(test)]
+
+use std::collections::HashSet;
+use ref_thread_local::RefThreadLocal;
+use primitives::BuildStorage;
+use primitives::testing::{Digest, DigestItem, Header};
+use substrate_primitives::{H256, Blake2Hasher};
+use runtime_io;
+use {GenesisConfig, Module, Trait, system};
+use super::{IsDeadAccount, OnNewAccount, ResolveHint};
+
+impl_outer_origin!{
+	pub enum Origin for Runtime {}
+}
+
+ref_thread_local! {
+	static managed ALIVE: HashSet<u64> = HashSet::new();
+}
+
+pub fn make_account(who: u64) {
+	ALIVE.borrow_mut().insert(who);
+	Indices::on_new_account(&who);
+}
+
+pub fn kill_account(who: u64) {
+	ALIVE.borrow_mut().remove(&who);
+}
+
+pub struct TestIsDeadAccount {}
+impl IsDeadAccount<u64> for TestIsDeadAccount {
+	fn is_dead_account(who: &u64) -> bool {
+		!ALIVE.borrow_mut().contains(who)
+	}
+}
+
+pub struct TestResolveHint;
+impl ResolveHint<u64, u64> for TestResolveHint {
+	fn resolve_hint(who: &u64) -> Option<u64> {
+		if *who < 256 {
+			None
+		} else {
+			Some(*who - 256)
+		}
+	}
+}
+
+// Workaround for https://github.com/rust-lang/rust/issues/26925 . Remove when sorted.
+#[derive(Clone, PartialEq, Eq, Debug)]
+pub struct Runtime;
+impl system::Trait for Runtime {
+	type Origin = Origin;
+	type Index = u64;
+	type BlockNumber = u64;
+	type Hash = H256;
+	type Hashing = ::primitives::traits::BlakeTwo256;
+	type Digest = Digest;
+	type AccountId = u64;
+	type Lookup = Indices;
+	type Header = Header;
+	type Event = ();
+	type Log = DigestItem;
+}
+impl Trait for Runtime {
+	type AccountIndex = u64;
+	type IsDeadAccount = TestIsDeadAccount;
+	type ResolveHint = TestResolveHint;
+	type Event = ();
+}
+
+pub fn new_test_ext() -> runtime_io::TestExternalities<Blake2Hasher> {
+	{
+		let mut h = ALIVE.borrow_mut();
+		h.clear();
+		for i in 1..5 { h.insert(i); }
+	}
+
+	let mut t = system::GenesisConfig::<Runtime>::default().build_storage().unwrap().0;
+	t.extend(GenesisConfig::<Runtime> {
+		ids: vec![1, 2, 3, 4]
+	}.build_storage().unwrap().0);
+	t.into()
+}
+
+pub type Indices = Module<Runtime>;