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Remove implementation of Randomness for () (#6959)

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This commit is contained in:
Bastian Köcher
2020-08-26 09:05:49 +02:00
committed by GitHub
parent b80191d0ff
commit f418ad2195
2 changed files with 7 additions and 3 deletions
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substrate/frame/society/src/mock.rs
+3 -2
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@@ -20,7 +20,8 @@
use super::*; use super::*;
use frame_support::{ use frame_support::{
impl_outer_origin, parameter_types, ord_parameter_types, traits::{OnInitialize, OnFinalize} impl_outer_origin, parameter_types, ord_parameter_types,
traits::{OnInitialize, OnFinalize, TestRandomness},
}; };
use sp_core::H256; use sp_core::H256;
use sp_runtime::{ use sp_runtime::{
@@ -99,7 +100,7 @@ impl pallet_balances::Trait for Test {
impl Trait for Test { impl Trait for Test {
type Event = (); type Event = ();
type Currency = pallet_balances::Module<Self>; type Currency = pallet_balances::Module<Self>;
type Randomness = (); type Randomness = TestRandomness;
type CandidateDeposit = CandidateDeposit; type CandidateDeposit = CandidateDeposit;
type WrongSideDeduction = WrongSideDeduction; type WrongSideDeduction = WrongSideDeduction;
type MaxStrikes = MaxStrikes; type MaxStrikes = MaxStrikes;
substrate/frame/support/src/traits.rs
+4 -1
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@@ -1345,7 +1345,10 @@ pub trait Randomness<Output> {
} }
} }
impl<Output: Decode + Default> Randomness<Output> for () { /// Provides an implementation of [`Randomness`] that should only be used in tests!
pub struct TestRandomness;
impl<Output: Decode + Default> Randomness<Output> for TestRandomness {
fn random(subject: &[u8]) -> Output { fn random(subject: &[u8]) -> Output {
Output::decode(&mut TrailingZeroInput::new(subject)).unwrap_or_default() Output::decode(&mut TrailingZeroInput::new(subject)).unwrap_or_default()
} }