77 lines
3.4 KiB
TypeScript
77 lines
3.4 KiB
TypeScript
import { WETH9Events, WETH9TransferEventArgs } from '@0x/contracts-erc20';
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import { loadCurrentBalance, StoredBalance } from '@0x/contracts-staking';
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import { expect, filterLogsToArguments } from '@0x/contracts-test-utils';
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import { BigNumber } from '@0x/utils';
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import { TxData } from 'ethereum-types';
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import { DeploymentManager } from '../deployment_manager';
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import { SimulationEnvironment } from '../simulation';
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import { FunctionAssertion, FunctionResult } from './function_assertion';
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interface WithdrawDelegatorRewardsBeforeInfo {
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delegatorStake: StoredBalance;
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poolRewards: BigNumber;
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wethReservedForPoolRewards: BigNumber;
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}
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/**
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* Returns a FunctionAssertion for `withdrawDelegatorRewards` which assumes valid input is provided.
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* It checks that the delegator's stake gets synced and pool rewards are updated to reflect the
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* amount withdrawn.
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*/
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/* tslint:disable:no-unnecessary-type-assertion */
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export function validWithdrawDelegatorRewardsAssertion(
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deployment: DeploymentManager,
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simulationEnvironment: SimulationEnvironment,
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): FunctionAssertion<[string], WithdrawDelegatorRewardsBeforeInfo, void> {
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const { stakingWrapper } = deployment.staking;
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return new FunctionAssertion(stakingWrapper, 'withdrawDelegatorRewards', {
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before: async (args: [string], txData: Partial<TxData>) => {
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const [poolId] = args;
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const delegatorStake = await stakingWrapper
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.getStakeDelegatedToPoolByOwner(txData.from as string, poolId)
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.callAsync();
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const poolRewards = await stakingWrapper.rewardsByPoolId(poolId).callAsync();
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const wethReservedForPoolRewards = await stakingWrapper.wethReservedForPoolRewards().callAsync();
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return { delegatorStake, poolRewards, wethReservedForPoolRewards };
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},
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after: async (
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beforeInfo: WithdrawDelegatorRewardsBeforeInfo,
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result: FunctionResult,
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args: [string],
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txData: Partial<TxData>,
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) => {
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// Ensure that the tx succeeded.
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expect(result.success, `Error: ${result.data}`).to.be.true();
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const [poolId] = args;
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const { currentEpoch } = simulationEnvironment;
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// Check that delegator stake has been synced
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const expectedDelegatorStake = loadCurrentBalance(beforeInfo.delegatorStake, currentEpoch);
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const delegatorStake = await stakingWrapper
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.getStakeDelegatedToPoolByOwner(txData.from as string, poolId)
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.callAsync();
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expect(delegatorStake).to.deep.equal(expectedDelegatorStake);
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// Check that pool rewards have been updated to reflect the amount withdrawn.
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const transferEvents = filterLogsToArguments<WETH9TransferEventArgs>(
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result.receipt!.logs, // tslint:disable-line:no-non-null-assertion
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WETH9Events.Transfer,
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);
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const expectedPoolRewards =
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transferEvents.length > 0
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? beforeInfo.poolRewards.minus(transferEvents[0]._value)
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: beforeInfo.poolRewards;
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const poolRewards = await stakingWrapper.rewardsByPoolId(poolId).callAsync();
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expect(poolRewards).to.bignumber.equal(expectedPoolRewards);
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// TODO: Check CR
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},
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});
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}
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/* tslint:enable:no-unnecessary-type-assertion */
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