75 lines
3.2 KiB
TypeScript
75 lines
3.2 KiB
TypeScript
import { BlockchainBalanceStore, LocalBalanceStore } from '@0x/contracts-exchange';
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import { GlobalStakeByStatus, OwnerStakeByStatus, StakeStatus, StoredBalance } from '@0x/contracts-staking';
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import { expect } from '@0x/contracts-test-utils';
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import { assetDataUtils } from '@0x/order-utils';
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import { BigNumber, logUtils } from '@0x/utils';
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import { TxData } from 'ethereum-types';
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import { DeploymentManager } from '../utils/deployment_manager';
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import { FunctionAssertion, FunctionResult } from '../utils/function_assertions';
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function expectedUndelegatedStake(
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initStake: OwnerStakeByStatus | GlobalStakeByStatus,
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amount: BigNumber,
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): StoredBalance {
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return {
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currentEpoch: initStake[StakeStatus.Undelegated].currentEpoch,
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currentEpochBalance: initStake[StakeStatus.Undelegated].currentEpochBalance.plus(amount),
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nextEpochBalance: initStake[StakeStatus.Undelegated].nextEpochBalance.plus(amount),
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};
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}
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/**
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* Returns a FunctionAssertion for `stake` which assumes valid input is provided. The
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* FunctionAssertion checks that the staker and zrxVault's balances of ZRX decrease and increase,
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* respectively, by the input amount.
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*/
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export function validStakeAssertion(
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deployment: DeploymentManager,
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balanceStore: BlockchainBalanceStore,
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globalStake: GlobalStakeByStatus,
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ownerStake: OwnerStakeByStatus,
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): FunctionAssertion<LocalBalanceStore> {
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const { stakingWrapper, zrxVault } = deployment.staking;
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const { zrx } = deployment.tokens;
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return new FunctionAssertion(stakingWrapper.stake, {
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before: async (amount: BigNumber, txData: Partial<TxData>) => {
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const expectedBalances = LocalBalanceStore.create(balanceStore);
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expectedBalances.transferAsset(
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txData.from as string,
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zrxVault.address,
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amount,
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assetDataUtils.encodeERC20AssetData(zrx.address),
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);
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return expectedBalances;
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},
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after: async (
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expectedBalances: LocalBalanceStore,
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_result: FunctionResult,
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amount: BigNumber,
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txData: Partial<TxData>,
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) => {
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logUtils.log(`stake(${amount})`);
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await balanceStore.updateErc20BalancesAsync();
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balanceStore.assertEquals(expectedBalances);
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const ownerUndelegatedStake = await stakingWrapper.getOwnerStakeByStatus.callAsync(
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txData.from as string,
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StakeStatus.Undelegated,
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);
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const expectedOwnerUndelegatedStake = expectedUndelegatedStake(ownerStake, amount);
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expect(ownerUndelegatedStake, 'Owner undelegated stake').to.deep.equal(expectedOwnerUndelegatedStake);
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ownerStake[StakeStatus.Undelegated] = expectedOwnerUndelegatedStake;
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const globalUndelegatedStake = await stakingWrapper.getGlobalStakeByStatus.callAsync(
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StakeStatus.Undelegated,
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);
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const expectedGlobalUndelegatedStake = expectedUndelegatedStake(globalStake, amount);
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expect(globalUndelegatedStake, 'Global undelegated stake').to.deep.equal(expectedGlobalUndelegatedStake);
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globalStake[StakeStatus.Undelegated] = expectedGlobalUndelegatedStake;
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},
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});
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}
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