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// This file is part of Substrate.
// Copyright (C) 2019-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Tests for Assets pallet.
use super::*;
use crate::{Error, mock::*};
use frame_support::{assert_ok, assert_noop, traits::Currency};
use pallet_balances::Error as BalancesError;
fn last_event() -> mock::Event {
frame_system::Pallet::<Test>::events().pop().expect("Event expected").event
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}
#[test]
fn basic_minting_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::mint(Origin::signed(1), 0, 2, 100));
assert_eq!(Assets::balance(0, 2), 100);
});
}
#[test]
fn approval_lifecycle_works() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
Balances::make_free_balance_be(&1, 1);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(Balances::reserved_balance(&1), 1);
assert_ok!(Assets::transfer_approved(Origin::signed(2), 0, 1, 3, 40));
assert_ok!(Assets::cancel_approval(Origin::signed(1), 0, 2));
assert_eq!(Assets::balance(0, 1), 60);
assert_eq!(Assets::balance(0, 3), 40);
assert_eq!(Balances::reserved_balance(&1), 0);
});
}
#[test]
fn approval_deposits_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
let e = BalancesError::<Test>::InsufficientBalance;
assert_noop!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50), e);
Balances::make_free_balance_be(&1, 1);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(Balances::reserved_balance(&1), 1);
assert_ok!(Assets::transfer_approved(Origin::signed(2), 0, 1, 3, 50));
assert_eq!(Balances::reserved_balance(&1), 0);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
assert_ok!(Assets::cancel_approval(Origin::signed(1), 0, 2));
assert_eq!(Balances::reserved_balance(&1), 0);
});
}
#[test]
fn cannot_transfer_more_than_approved() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
Balances::make_free_balance_be(&1, 1);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
let e = Error::<Test>::Unapproved;
assert_noop!(Assets::transfer_approved(Origin::signed(2), 0, 1, 3, 51), e);
});
}
#[test]
fn cannot_transfer_more_than_exists() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
Balances::make_free_balance_be(&1, 1);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 101));
let e = Error::<Test>::BalanceLow;
assert_noop!(Assets::transfer_approved(Origin::signed(2), 0, 1, 3, 101), e);
});
}
#[test]
fn cancel_approval_works() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
Balances::make_free_balance_be(&1, 1);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
assert_noop!(Assets::cancel_approval(Origin::signed(1), 1, 2), Error::<Test>::Unknown);
assert_noop!(Assets::cancel_approval(Origin::signed(2), 0, 2), Error::<Test>::Unknown);
assert_noop!(Assets::cancel_approval(Origin::signed(1), 0, 3), Error::<Test>::Unknown);
assert_ok!(Assets::cancel_approval(Origin::signed(1), 0, 2));
assert_noop!(Assets::cancel_approval(Origin::signed(1), 0, 2), Error::<Test>::Unknown);
});
}
#[test]
fn force_cancel_approval_works() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
Balances::make_free_balance_be(&1, 1);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
let e = Error::<Test>::NoPermission;
assert_noop!(Assets::force_cancel_approval(Origin::signed(2), 0, 1, 2), e);
assert_noop!(Assets::force_cancel_approval(Origin::signed(1), 1, 1, 2), Error::<Test>::Unknown);
assert_noop!(Assets::force_cancel_approval(Origin::signed(1), 0, 2, 2), Error::<Test>::Unknown);
assert_noop!(Assets::force_cancel_approval(Origin::signed(1), 0, 1, 3), Error::<Test>::Unknown);
assert_ok!(Assets::force_cancel_approval(Origin::signed(1), 0, 1, 2));
assert_noop!(Assets::force_cancel_approval(Origin::signed(1), 0, 1, 2), Error::<Test>::Unknown);
});
}
#[test]
fn lifecycle_should_work() {
new_test_ext().execute_with(|| {
Balances::make_free_balance_be(&1, 100);
assert_ok!(Assets::create(Origin::signed(1), 0, 1, 1));
assert_eq!(Balances::reserved_balance(&1), 1);
assert!(Asset::<Test>::contains_key(0));
assert_ok!(Assets::set_metadata(Origin::signed(1), 0, vec![0], vec![0], 12));
assert_eq!(Balances::reserved_balance(&1), 4);
assert!(Metadata::<Test>::contains_key(0));
Balances::make_free_balance_be(&10, 100);
assert_ok!(Assets::mint(Origin::signed(1), 0, 10, 100));
Balances::make_free_balance_be(&20, 100);
assert_ok!(Assets::mint(Origin::signed(1), 0, 20, 100));
assert_eq!(Account::<Test>::iter_prefix(0).count(), 2);
let w = Asset::<Test>::get(0).unwrap().destroy_witness();
assert_ok!(Assets::destroy(Origin::signed(1), 0, w));
assert_eq!(Balances::reserved_balance(&1), 0);
assert!(!Asset::<Test>::contains_key(0));
assert!(!Metadata::<Test>::contains_key(0));
assert_eq!(Account::<Test>::iter_prefix(0).count(), 0);
assert_ok!(Assets::create(Origin::signed(1), 0, 1, 1));
assert_eq!(Balances::reserved_balance(&1), 1);
assert!(Asset::<Test>::contains_key(0));
assert_ok!(Assets::set_metadata(Origin::signed(1), 0, vec![0], vec![0], 12));
assert_eq!(Balances::reserved_balance(&1), 4);
assert!(Metadata::<Test>::contains_key(0));
assert_ok!(Assets::mint(Origin::signed(1), 0, 10, 100));
assert_ok!(Assets::mint(Origin::signed(1), 0, 20, 100));
assert_eq!(Account::<Test>::iter_prefix(0).count(), 2);
let w = Asset::<Test>::get(0).unwrap().destroy_witness();
assert_ok!(Assets::destroy(Origin::root(), 0, w));
assert_eq!(Balances::reserved_balance(&1), 0);
assert!(!Asset::<Test>::contains_key(0));
assert!(!Metadata::<Test>::contains_key(0));
assert_eq!(Account::<Test>::iter_prefix(0).count(), 0);
});
}
#[test]
fn destroy_with_bad_witness_should_not_work() {
new_test_ext().execute_with(|| {
Balances::make_free_balance_be(&1, 100);
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
let w = Asset::<Test>::get(0).unwrap().destroy_witness();
assert_ok!(Assets::mint(Origin::signed(1), 0, 10, 100));
assert_noop!(Assets::destroy(Origin::signed(1), 0, w), Error::<Test>::BadWitness);
});
}
#[test]
fn non_providing_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, false, 1));
Balances::make_free_balance_be(&0, 100);
assert_ok!(Assets::mint(Origin::signed(1), 0, 0, 100));
// Cannot mint into account 2 since it doesn't (yet) exist...
assert_noop!(Assets::mint(Origin::signed(1), 0, 1, 100), TokenError::CannotCreate);
assert_noop!(Assets::transfer(Origin::signed(0), 0, 1, 50), TokenError::CannotCreate);
// ...or force-transfer
assert_noop!(Assets::force_transfer(Origin::signed(1), 0, 0, 1, 50), TokenError::CannotCreate);
Balances::make_free_balance_be(&1, 100);
Balances::make_free_balance_be(&2, 100);
assert_ok!(Assets::transfer(Origin::signed(0), 0, 1, 25));
assert_ok!(Assets::force_transfer(Origin::signed(1), 0, 0, 2, 25));
});
}
#[test]
fn min_balance_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 10));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Asset::<Test>::get(0).unwrap().accounts, 1);
// Cannot create a new account with a balance that is below minimum...
assert_noop!(Assets::mint(Origin::signed(1), 0, 2, 9), TokenError::BelowMinimum);
assert_noop!(Assets::transfer(Origin::signed(1), 0, 2, 9), TokenError::BelowMinimum);
assert_noop!(Assets::force_transfer(Origin::signed(1), 0, 1, 2, 9), TokenError::BelowMinimum);
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// When deducting from an account to below minimum, it should be reaped.
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 91));
assert!(Assets::balance(0, 1).is_zero());
assert_eq!(Assets::balance(0, 2), 100);
assert_eq!(Asset::<Test>::get(0).unwrap().accounts, 1);
assert_ok!(Assets::force_transfer(Origin::signed(1), 0, 2, 1, 91));
assert!(Assets::balance(0, 2).is_zero());
assert_eq!(Assets::balance(0, 1), 100);
assert_eq!(Asset::<Test>::get(0).unwrap().accounts, 1);
assert_ok!(Assets::burn(Origin::signed(1), 0, 1, 91));
assert!(Assets::balance(0, 1).is_zero());
assert_eq!(Asset::<Test>::get(0).unwrap().accounts, 0);
});
}
#[test]
fn querying_total_supply_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(Assets::balance(0, 1), 50);
assert_eq!(Assets::balance(0, 2), 50);
assert_ok!(Assets::transfer(Origin::signed(2), 0, 3, 31));
assert_eq!(Assets::balance(0, 1), 50);
assert_eq!(Assets::balance(0, 2), 19);
assert_eq!(Assets::balance(0, 3), 31);
assert_ok!(Assets::burn(Origin::signed(1), 0, 3, u64::max_value()));
assert_eq!(Assets::total_supply(0), 69);
});
}
#[test]
fn transferring_amount_below_available_balance_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(Assets::balance(0, 1), 50);
assert_eq!(Assets::balance(0, 2), 50);
});
}
#[test]
fn transferring_enough_to_kill_source_when_keep_alive_should_fail() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 10));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_noop!(Assets::transfer_keep_alive(Origin::signed(1), 0, 2, 91), Error::<Test>::BalanceLow);
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assert_ok!(Assets::transfer_keep_alive(Origin::signed(1), 0, 2, 90));
assert_eq!(Assets::balance(0, 1), 10);
assert_eq!(Assets::balance(0, 2), 90);
});
}
#[test]
fn transferring_frozen_user_should_not_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::freeze(Origin::signed(1), 0, 1));
assert_noop!(Assets::transfer(Origin::signed(1), 0, 2, 50), Error::<Test>::Frozen);
assert_ok!(Assets::thaw(Origin::signed(1), 0, 1));
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
});
}
#[test]
fn transferring_frozen_asset_should_not_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::freeze_asset(Origin::signed(1), 0));
assert_noop!(Assets::transfer(Origin::signed(1), 0, 2, 50), Error::<Test>::Frozen);
assert_ok!(Assets::thaw_asset(Origin::signed(1), 0));
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
});
}
#[test]
fn origin_guards_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_noop!(Assets::transfer_ownership(Origin::signed(2), 0, 2), Error::<Test>::NoPermission);
assert_noop!(Assets::set_team(Origin::signed(2), 0, 2, 2, 2), Error::<Test>::NoPermission);
assert_noop!(Assets::freeze(Origin::signed(2), 0, 1), Error::<Test>::NoPermission);
assert_noop!(Assets::thaw(Origin::signed(2), 0, 2), Error::<Test>::NoPermission);
assert_noop!(Assets::mint(Origin::signed(2), 0, 2, 100), Error::<Test>::NoPermission);
assert_noop!(Assets::burn(Origin::signed(2), 0, 1, 100), Error::<Test>::NoPermission);
assert_noop!(Assets::force_transfer(Origin::signed(2), 0, 1, 2, 100), Error::<Test>::NoPermission);
let w = Asset::<Test>::get(0).unwrap().destroy_witness();
assert_noop!(Assets::destroy(Origin::signed(2), 0, w), Error::<Test>::NoPermission);
});
}
#[test]
fn transfer_owner_should_work() {
new_test_ext().execute_with(|| {
Balances::make_free_balance_be(&1, 100);
Balances::make_free_balance_be(&2, 100);
assert_ok!(Assets::create(Origin::signed(1), 0, 1, 1));
assert_eq!(Balances::reserved_balance(&1), 1);
assert_ok!(Assets::transfer_ownership(Origin::signed(1), 0, 2));
assert_eq!(Balances::reserved_balance(&2), 1);
assert_eq!(Balances::reserved_balance(&1), 0);
assert_noop!(Assets::transfer_ownership(Origin::signed(1), 0, 1), Error::<Test>::NoPermission);
// Set metadata now and make sure that deposit gets transferred back.
assert_ok!(Assets::set_metadata(Origin::signed(2), 0, vec![0u8; 10], vec![0u8; 10], 12));
assert_ok!(Assets::transfer_ownership(Origin::signed(2), 0, 1));
assert_eq!(Balances::reserved_balance(&1), 22);
assert_eq!(Balances::reserved_balance(&2), 0);
});
}
#[test]
fn set_team_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::set_team(Origin::signed(1), 0, 2, 3, 4));
assert_ok!(Assets::mint(Origin::signed(2), 0, 2, 100));
assert_ok!(Assets::freeze(Origin::signed(4), 0, 2));
assert_ok!(Assets::thaw(Origin::signed(3), 0, 2));
assert_ok!(Assets::force_transfer(Origin::signed(3), 0, 2, 3, 100));
assert_ok!(Assets::burn(Origin::signed(3), 0, 3, 100));
});
}
#[test]
fn transferring_to_frozen_account_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_ok!(Assets::mint(Origin::signed(1), 0, 2, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_eq!(Assets::balance(0, 2), 100);
assert_ok!(Assets::freeze(Origin::signed(1), 0, 2));
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(Assets::balance(0, 2), 150);
});
}
#[test]
fn transferring_amount_more_than_available_balance_should_not_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(Assets::balance(0, 1), 50);
assert_eq!(Assets::balance(0, 2), 50);
assert_ok!(Assets::burn(Origin::signed(1), 0, 1, u64::max_value()));
assert_eq!(Assets::balance(0, 1), 0);
assert_noop!(Assets::transfer(Origin::signed(1), 0, 1, 50), Error::<Test>::BalanceLow);
assert_noop!(Assets::transfer(Origin::signed(2), 0, 1, 51), Error::<Test>::BalanceLow);
});
}
#[test]
fn transferring_less_than_one_unit_is_fine() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 0));
assert_eq!(
last_event(),
mock::Event::pallet_assets(crate::Event::Transferred(0, 1, 2, 0)),
);
});
}
#[test]
fn transferring_more_units_than_total_supply_should_not_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_noop!(Assets::transfer(Origin::signed(1), 0, 2, 101), Error::<Test>::BalanceLow);
});
}
#[test]
fn burning_asset_balance_with_positive_balance_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
assert_ok!(Assets::burn(Origin::signed(1), 0, 1, u64::max_value()));
assert_eq!(Assets::balance(0, 1), 0);
});
}
#[test]
fn burning_asset_balance_with_zero_balance_does_nothing() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 2), 0);
assert_ok!(Assets::burn(Origin::signed(1), 0, 2, u64::max_value()));
assert_eq!(Assets::balance(0, 2), 0);
assert_eq!(Assets::total_supply(0), 100);
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});
}
#[test]
fn set_metadata_should_work() {
new_test_ext().execute_with(|| {
// Cannot add metadata to unknown asset
assert_noop!(
Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 10], vec![0u8; 10], 12),
Error::<Test>::Unknown,
);
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
// Cannot add metadata to unowned asset
assert_noop!(
Assets::set_metadata(Origin::signed(2), 0, vec![0u8; 10], vec![0u8; 10], 12),
Error::<Test>::NoPermission,
);
// Cannot add oversized metadata
assert_noop!(
Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 100], vec![0u8; 10], 12),
Error::<Test>::BadMetadata,
);
assert_noop!(
Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 10], vec![0u8; 100], 12),
Error::<Test>::BadMetadata,
);
// Successfully add metadata and take deposit
Balances::make_free_balance_be(&1, 30);
assert_ok!(Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 10], vec![0u8; 10], 12));
assert_eq!(Balances::free_balance(&1), 9);
// Update deposit
assert_ok!(Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 10], vec![0u8; 5], 12));
assert_eq!(Balances::free_balance(&1), 14);
assert_ok!(Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 10], vec![0u8; 15], 12));
assert_eq!(Balances::free_balance(&1), 4);
// Cannot over-reserve
assert_noop!(
Assets::set_metadata(Origin::signed(1), 0, vec![0u8; 20], vec![0u8; 20], 12),
BalancesError::<Test, _>::InsufficientBalance,
);
// Clear Metadata
assert!(Metadata::<Test>::contains_key(0));
assert_noop!(Assets::clear_metadata(Origin::signed(2), 0), Error::<Test>::NoPermission);
assert_noop!(Assets::clear_metadata(Origin::signed(1), 1), Error::<Test>::Unknown);
assert_ok!(Assets::clear_metadata(Origin::signed(1), 0));
assert!(!Metadata::<Test>::contains_key(0));
});
}
// TODO: tests for force_set_metadata, force_clear_metadata, force_asset_status
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// https://github.com/paritytech/substrate/issues/8470
#[test]
fn freezer_should_work() {
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 10));
assert_ok!(Assets::mint(Origin::signed(1), 0, 1, 100));
assert_eq!(Assets::balance(0, 1), 100);
// freeze 50 of it.
set_frozen_balance(0, 1, 50);
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 20));
// cannot transfer another 21 away as this would take the non-frozen balance (30) to below
// the minimum balance (10).
assert_noop!(Assets::transfer(Origin::signed(1), 0, 2, 21), Error::<Test>::BalanceLow);
// create an approved transfer...
Balances::make_free_balance_be(&1, 100);
assert_ok!(Assets::approve_transfer(Origin::signed(1), 0, 2, 50));
let e = Error::<Test>::BalanceLow;
// ...but that wont work either:
assert_noop!(Assets::transfer_approved(Origin::signed(2), 0, 1, 2, 21), e);
// a force transfer won't work also.
let e = Error::<Test>::BalanceLow;
assert_noop!(Assets::force_transfer(Origin::signed(1), 0, 1, 2, 21), e);
// reduce it to only 49 frozen...
set_frozen_balance(0, 1, 49);
// ...and it's all good:
assert_ok!(Assets::force_transfer(Origin::signed(1), 0, 1, 2, 21));
// and if we clear it, we can remove the account completely.
clear_frozen_balance(0, 1);
assert_ok!(Assets::transfer(Origin::signed(1), 0, 2, 50));
assert_eq!(hooks(), vec![Hook::Died(0, 1)]);
});
}
#[test]
fn imbalances_should_work() {
use frame_support::traits::tokens::fungibles::Balanced;
new_test_ext().execute_with(|| {
assert_ok!(Assets::force_create(Origin::root(), 0, 1, true, 1));
let imb = Assets::issue(0, 100);
assert_eq!(Assets::total_supply(0), 100);
assert_eq!(imb.peek(), 100);
let (imb1, imb2) = imb.split(30);
assert_eq!(imb1.peek(), 30);
assert_eq!(imb2.peek(), 70);
drop(imb2);
assert_eq!(Assets::total_supply(0), 30);
assert!(Assets::resolve(&1, imb1).is_ok());
assert_eq!(Assets::balance(0, 1), 30);
assert_eq!(Assets::total_supply(0), 30);
});
}