392 lines
17 KiB
TypeScript
392 lines
17 KiB
TypeScript
import { ERC20Wrapper } from '@0x/contracts-asset-proxy';
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import { blockchainTests, describe, toBaseUnitAmount } from '@0x/contracts-test-utils';
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import { BigNumber, StakingRevertErrors } from '@0x/utils';
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import * as _ from 'lodash';
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import { StakeInfo, StakeStatus } from '../src/types';
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import { StakerActor } from './actors/staker_actor';
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import { deployAndConfigureContractsAsync, StakingApiWrapper } from './utils/api_wrapper';
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// tslint:disable:no-unnecessary-type-assertion
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blockchainTests.resets('Stake Statuses', env => {
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// constants
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const ZERO = new BigNumber(0);
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// tokens & addresses
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let accounts: string[];
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let owner: string;
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let actors: string[];
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// wrappers
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let stakingApiWrapper: StakingApiWrapper;
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let erc20Wrapper: ERC20Wrapper;
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// stake actor
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let staker: StakerActor;
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let poolIds: string[];
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let unusedPoolId: string;
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let poolOperator: string;
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// tests
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before(async () => {
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// create accounts
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accounts = await env.getAccountAddressesAsync();
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owner = accounts[0];
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actors = accounts.slice(2, 5);
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// set up ERC20Wrapper
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erc20Wrapper = new ERC20Wrapper(env.provider, accounts, owner);
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// deploy staking contracts
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stakingApiWrapper = await deployAndConfigureContractsAsync(env, owner, erc20Wrapper);
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// setup new staker
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staker = new StakerActor(actors[0], stakingApiWrapper);
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// setup pools
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poolOperator = actors[1];
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poolIds = await Promise.all([
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await stakingApiWrapper.utils.createStakingPoolAsync(poolOperator, 4, false),
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await stakingApiWrapper.utils.createStakingPoolAsync(poolOperator, 5, false),
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]);
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const lastPoolId = await stakingApiWrapper.stakingContract.lastPoolId().callAsync();
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unusedPoolId = `0x${new BigNumber(lastPoolId)
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.plus(1)
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.toString(16)
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.padStart(64, '0')}`;
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});
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describe('Stake', () => {
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it('should successfully stake zero ZRX', async () => {
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const amount = toBaseUnitAmount(0);
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await staker.stakeAsync(amount);
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});
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it('should successfully stake non-zero ZRX', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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});
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it('should retain stake balance across 1 epoch', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.goToNextEpochAsync();
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});
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it('should retain stake balance across 2 epochs', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.goToNextEpochAsync();
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await staker.goToNextEpochAsync();
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});
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});
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describe('Move Stake', () => {
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it("should be able to rebalance next epoch's stake", async () => {
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// epoch 2
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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// still epoch 2 ~ should be able to move stake again
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Undelegated),
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amount,
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);
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});
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it("should be able to reassign next epoch's stake", async () => {
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// epoch 2
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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// still epoch 2 ~ should be able to move stake again
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Delegated, poolIds[1]),
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amount,
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);
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});
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it('should fail to move the same stake more than once', async () => {
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// epoch 2
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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// stake is now undelegated, should not be able to move it out of active status again
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[1]),
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amount,
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new StakingRevertErrors.InsufficientBalanceError(amount, ZERO),
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);
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});
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});
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describe('Stake and Move', () => {
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it("should be able to rebalance next epoch's stake", async () => {
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// epoch 2
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const amount = toBaseUnitAmount(10);
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await staker.stakeAndMoveAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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// still epoch 2 ~ should be able to move stake again
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Undelegated),
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amount,
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);
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});
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it('should fail to move the same stake more than once', async () => {
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// epoch 2
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const amount = toBaseUnitAmount(10);
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await staker.stakeAndMoveAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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// stake is now undelegated, should not be able to move it out of active status again
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[1]),
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amount,
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new StakingRevertErrors.InsufficientBalanceError(amount, ZERO),
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);
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});
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});
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describe('Move Zero Stake', () => {
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it('undelegated -> undelegated', async () => {
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Undelegated),
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ZERO,
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);
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});
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it('undelegated -> delegated', async () => {
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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ZERO,
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);
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});
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it('delegated -> undelegated', async () => {
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Undelegated),
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ZERO,
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);
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});
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it('delegated -> delegated (same pool)', async () => {
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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ZERO,
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);
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});
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it('delegated -> delegated (other pool)', async () => {
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Delegated, poolIds[1]),
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ZERO,
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);
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});
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});
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describe('Move Non-Zero Stake', () => {
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const testMovePartialStake = async (from: StakeInfo, to: StakeInfo) => {
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// setup
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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if (from.status !== StakeStatus.Undelegated) {
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await staker.moveStakeAsync(new StakeInfo(StakeStatus.Undelegated), from, amount);
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}
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// run test, checking balances in epochs [n .. n + 2]
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// in epoch `n` - `next` is set
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// in epoch `n+1` - `current` is set
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await staker.moveStakeAsync(from, to, amount.div(2));
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await staker.goToNextEpochAsync();
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};
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it('undelegated -> undelegated', async () => {
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await testMovePartialStake(new StakeInfo(StakeStatus.Undelegated), new StakeInfo(StakeStatus.Undelegated));
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});
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it('undelegated -> delegated', async () => {
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await testMovePartialStake(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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);
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});
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it('delegated -> undelegated', async () => {
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await testMovePartialStake(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Undelegated),
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);
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});
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it('delegated -> delegated (same pool)', async () => {
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await testMovePartialStake(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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);
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});
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it('delegated -> delegated (other pool)', async () => {
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await testMovePartialStake(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Delegated, poolIds[1]),
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);
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});
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it('undelegated -> delegated (non-existent pool)', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, unusedPoolId),
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amount,
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new StakingRevertErrors.PoolExistenceError(unusedPoolId, false),
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);
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});
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it('delegated -> delegated (non-existent pool)', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Delegated, unusedPoolId),
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amount,
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new StakingRevertErrors.PoolExistenceError(unusedPoolId, false),
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);
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});
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});
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describe('Unstake', () => {
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it('should successfully unstake zero ZRX', async () => {
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const amount = toBaseUnitAmount(0);
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await staker.unstakeAsync(amount);
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});
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it('should successfully unstake after becoming undelegated', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Undelegated),
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amount,
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);
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await staker.goToNextEpochAsync(); // stake is now undelegated
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await staker.unstakeAsync(amount);
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});
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it('should fail to unstake in the same epoch as stake was undelegated', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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await staker.goToNextEpochAsync(); // stake is now delegated
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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new StakeInfo(StakeStatus.Undelegated),
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amount,
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);
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await staker.unstakeAsync(amount, new StakingRevertErrors.InsufficientBalanceError(amount, ZERO));
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});
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it('should fail to unstake in same epoch that undelegated stake has been delegated', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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await staker.unstakeAsync(amount, new StakingRevertErrors.InsufficientBalanceError(amount, ZERO));
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});
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it('should fail to unstake one epoch after undelegated stake has been delegated', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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await staker.goToNextEpochAsync(); // stake is now undelegated
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await staker.unstakeAsync(amount, new StakingRevertErrors.InsufficientBalanceError(amount, ZERO));
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});
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it('should fail to unstake >1 epoch after undelegated stake has been delegated', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.moveStakeAsync(
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new StakeInfo(StakeStatus.Undelegated),
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new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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amount,
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);
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await staker.goToNextEpochAsync(); // stake is now undelegated
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await staker.goToNextEpochAsync(); // stake is now withdrawable
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await staker.unstakeAsync(amount, new StakingRevertErrors.InsufficientBalanceError(amount, ZERO));
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});
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it('should successfuly unstake freshly deposited stake', async () => {
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const amount = toBaseUnitAmount(10);
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await staker.stakeAsync(amount);
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await staker.unstakeAsync(amount);
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});
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});
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describe('Simulations', () => {
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// it('Simulation from Staking Spec', async () => {
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// // Epoch 1: Stake some ZRX
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// await staker.stakeAsync(toBaseUnitAmount(4));
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// // Later in Epoch 1: User delegates and deactivates some stake
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// await staker.moveStakeAsync(
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// new StakeInfo(StakeStatus.Active),
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// new StakeInfo(StakeStatus.Undelegated),
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// toBaseUnitAmount(1),
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// );
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// await staker.moveStakeAsync(
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// new StakeInfo(StakeStatus.Active),
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// new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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// toBaseUnitAmount(2),
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// );
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// // Epoch 2: Status updates (no user intervention required)
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// await staker.goToNextEpochAsync();
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// // Epoch 3: Stake that has been undelegated for an epoch can be withdrawn (no user intervention required)
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// await staker.goToNextEpochAsync();
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// // Later in Epoch 3: User reactivates half of their undelegated stake; this becomes Active next epoch
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// await staker.moveStakeAsync(
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// new StakeInfo(StakeStatus.Undelegated),
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// new StakeInfo(StakeStatus.Active),
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// toBaseUnitAmount(0.5),
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// );
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// // Later in Epoch 3: User re-delegates half of their stake from Pool 1 to Pool 2
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// await staker.moveStakeAsync(
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// new StakeInfo(StakeStatus.Delegated, poolIds[0]),
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// new StakeInfo(StakeStatus.Delegated, poolIds[1]),
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// toBaseUnitAmount(1),
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// );
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// // Epoch 4: Status updates (no user intervention required)
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// await staker.goToNextEpochAsync();
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// // Later in Epoch 4: User deactivates all active stake
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// await staker.moveStakeAsync(
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// new StakeInfo(StakeStatus.Active),
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// new StakeInfo(StakeStatus.Undelegated),
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// toBaseUnitAmount(1.5),
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// );
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// // Later in Epoch 4: User withdraws all available undelegated stake
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// await staker.unstakeAsync(toBaseUnitAmount(0.5));
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// // Epoch 5: Status updates (no user intervention required)
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// await staker.goToNextEpochAsync();
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// // Later in Epoch 5: User reactivates a portion of their stake
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// await staker.moveStakeAsync(
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// new StakeInfo(StakeStatus.Undelegated),
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// new StakeInfo(StakeStatus.Active),
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// toBaseUnitAmount(1),
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// );
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// // Epoch 6: Status updates (no user intervention required)
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// await staker.goToNextEpochAsync();
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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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