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Balance to Asset Balance Conversion (#9076)

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* add BalanceConversion trait and implementation

* derive some useful traits on Imbalance

* Update frame/support/src/traits/tokens/fungibles/imbalance.rs

Co-authored-by: Xiliang Chen <xlchen1291@gmail.com>

* make BalanceConversion error type configurable

* add RuntimeDebug import and derive traits on other Imbalance

* formatting

* move BalanceConversion trait to frame-support

* add necessary trait import

Co-authored-by: Xiliang Chen <xlchen1291@gmail.com>
This commit is contained in:
Alexander Popiak
2021-07-20 16:55:54 +02:00
committed by GitHub
parent e17a014627
commit f538174847
7 changed files with 99 additions and 9 deletions
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substrate/frame/assets/src/tests.rs
+27 -1
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@@ -19,7 +19,7 @@
use super::*;
use crate::{Error, mock::*};
use sp_runtime::TokenError;
use sp_runtime::{TokenError, traits::ConvertInto};
use frame_support::{assert_ok, assert_noop, traits::Currency};
use pallet_balances::Error as BalancesError;
@@ -699,3 +699,29 @@ fn force_asset_status_should_work(){
assert_eq!(Assets::total_supply(0), 200);
});
}
#[test]
fn balance_conversion_should_work() {
new_test_ext().execute_with(|| {
use frame_support::traits::tokens::BalanceConversion;
let id = 42;
assert_ok!(Assets::force_create(Origin::root(), id, 1, true, 10));
let not_sufficient = 23;
assert_ok!(Assets::force_create(Origin::root(), not_sufficient, 1, false, 10));
assert_eq!(
BalanceToAssetBalance::<Balances, Test, ConvertInto>::to_asset_balance(100, 1234),
Err(ConversionError::AssetMissing)
);
assert_eq!(
BalanceToAssetBalance::<Balances, Test, ConvertInto>::to_asset_balance(100, not_sufficient),
Err(ConversionError::AssetNotSufficient)
);
// 10 / 1 == 10 -> the conversion should 10x the value
assert_eq!(
BalanceToAssetBalance::<Balances, Test, ConvertInto>::to_asset_balance(100, id),
Ok(100 * 10)
);
});
}