mirror of
https://github.com/Instadapp/aave-protocol-v2.git
synced 2024-07-29 21:47:30 +00:00
Add test cases for FlashLiquidationAdapter
This commit is contained in:
David Racero
parent
7040f9ea2e
commit
94dd996666
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@ -145,11 +145,11 @@ contract FlashLiquidationAdapter is BaseUniswapAdapter {
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vars.userCollateralBalance
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);
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require(coverAmount >= vars.debtAmountNeeded, 'Not enought cover amount requested');
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require(coverAmount >= vars.debtAmountNeeded, 'FLASH_COVER_NOT_ENOUGH');
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uint256 flashLoanDebt = coverAmount.add(premium);
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require(IERC20(debtAsset).approve(address(LENDING_POOL), debtToCover), 'Approval error');
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IERC20(debtAsset).approve(address(LENDING_POOL), debtToCover);
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// Liquidate the user position and release the underlying collateral
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LENDING_POOL.liquidationCall(collateralAsset, debtAsset, user, debtToCover, false);
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@ -233,6 +233,7 @@ const buildTestEnv = async (deployer: Signer, secondaryWallet: Signer) => {
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await waitForTx(
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await addressesProvider.setLendingPoolCollateralManager(collateralManager.address)
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);
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await deployMockFlashLoanReceiver(addressesProvider.address);
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const mockUniswapRouter = await deployMockUniswapRouter();
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@ -39,7 +39,6 @@ import { solidity } from 'ethereum-waffle';
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import { AaveConfig } from '../../markets/aave';
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import { FlashLiquidationAdapter } from '../../types';
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import { HardhatRuntimeEnvironment } from 'hardhat/types';
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import { hrtime } from 'process';
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import { usingTenderly } from '../../helpers/tenderly-utils';
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chai.use(bignumberChai());
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@ -1,34 +1,113 @@
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import { makeSuite, TestEnv } from './helpers/make-suite';
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import {
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convertToCurrencyDecimals,
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getContract,
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buildFlashLiquidationAdapterParams,
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} from '../helpers/contracts-helpers';
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import { getMockUniswapRouter } from '../helpers/contracts-getters';
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import { deployFlashLiquidationAdapter } from '../helpers/contracts-deployments';
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import { MockUniswapV2Router02 } from '../types/MockUniswapV2Router02';
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import { Zero } from '@ethersproject/constants';
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import BigNumber from 'bignumber.js';
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import { DRE, evmRevert, evmSnapshot, increaseTime } from '../helpers/misc-utils';
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import { ethers } from 'ethers';
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import { eContractid, ProtocolErrors, RateMode } from '../helpers/types';
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import { StableDebtToken } from '../types/StableDebtToken';
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import { ProtocolErrors, RateMode } from '../helpers/types';
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import { APPROVAL_AMOUNT_LENDING_POOL, MAX_UINT_AMOUNT, oneEther } from '../helpers/constants';
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import { getUserData } from './helpers/utils/helpers';
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import { calcExpectedStableDebtTokenBalance } from './helpers/utils/calculations';
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import { HardhatRuntimeEnvironment } from 'hardhat/types';
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const { parseEther } = ethers.utils;
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const { expect } = require('chai');
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makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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let mockUniswapRouter: MockUniswapV2Router02;
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let evmSnapshotId: string;
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before(async () => {
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mockUniswapRouter = await getMockUniswapRouter();
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});
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const depositAndHFBelowOne = async () => {
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const { INVALID_HF } = ProtocolErrors;
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const { dai, weth, users, pool, oracle } = testEnv;
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const depositor = users[0];
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const borrower = users[1];
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//mints DAI to depositor
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await dai.connect(depositor.signer).mint(await convertToCurrencyDecimals(dai.address, '1000'));
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//approve protocol to access depositor wallet
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await dai.connect(depositor.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
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//user 1 deposits 1000 DAI
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const amountDAItoDeposit = await convertToCurrencyDecimals(dai.address, '1000');
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await pool
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.connect(depositor.signer)
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.deposit(dai.address, amountDAItoDeposit, depositor.address, '0');
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//user 2 deposits 1 ETH
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const amountETHtoDeposit = await convertToCurrencyDecimals(weth.address, '1');
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//mints WETH to borrower
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await weth.connect(borrower.signer).mint(await convertToCurrencyDecimals(weth.address, '1000'));
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//approve protocol to access the borrower wallet
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await weth.connect(borrower.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
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await pool
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.connect(borrower.signer)
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.deposit(weth.address, amountETHtoDeposit, borrower.address, '0');
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//user 2 borrows
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const userGlobalDataBefore = await pool.getUserAccountData(borrower.address);
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const daiPrice = await oracle.getAssetPrice(dai.address);
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const amountDAIToBorrow = await convertToCurrencyDecimals(
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dai.address,
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new BigNumber(userGlobalDataBefore.availableBorrowsETH.toString())
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.div(daiPrice.toString())
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.multipliedBy(0.95)
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.toFixed(0)
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);
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await pool
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.connect(borrower.signer)
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.borrow(dai.address, amountDAIToBorrow, RateMode.Stable, '0', borrower.address);
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const userGlobalDataAfter = await pool.getUserAccountData(borrower.address);
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expect(userGlobalDataAfter.currentLiquidationThreshold.toString()).to.be.equal(
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'8250',
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INVALID_HF
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);
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await oracle.setAssetPrice(
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dai.address,
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new BigNumber(daiPrice.toString()).multipliedBy(1.18).toFixed(0)
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);
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const userGlobalData = await pool.getUserAccountData(borrower.address);
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expect(userGlobalData.healthFactor.toString()).to.be.bignumber.lt(
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oneEther.toFixed(0),
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INVALID_HF
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);
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};
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beforeEach(async () => {
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evmSnapshotId = await evmSnapshot();
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});
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afterEach(async () => {
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await evmRevert(evmSnapshotId);
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});
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describe('Flash Liquidation Adapter', () => {
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before('Before LendingPool liquidation: set config', () => {
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BigNumber.config({ DECIMAL_PLACES: 0, ROUNDING_MODE: BigNumber.ROUND_DOWN });
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});
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after('After LendingPool liquidation: reset config', () => {
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BigNumber.config({ DECIMAL_PLACES: 20, ROUNDING_MODE: BigNumber.ROUND_HALF_UP });
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});
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describe('constructor', () => {
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it('should deploy with correct parameters', async () => {
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const { addressesProvider, weth } = testEnv;
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@ -51,96 +130,11 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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});
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});
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describe('executeOperation', () => {
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const { INVALID_HF } = ProtocolErrors;
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describe('executeOperation: succesfully liquidateCall and swap via Flash Loan with profits', () => {
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it('Liquidates the borrow with profit', async () => {
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await depositAndHFBelowOne();
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await increaseTime(100);
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before('Before LendingPool liquidation: set config', () => {
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BigNumber.config({ DECIMAL_PLACES: 0, ROUNDING_MODE: BigNumber.ROUND_DOWN });
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});
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after('After LendingPool liquidation: reset config', () => {
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BigNumber.config({ DECIMAL_PLACES: 20, ROUNDING_MODE: BigNumber.ROUND_HALF_UP });
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});
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it('Deposits WETH, borrows DAI', async () => {
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const { dai, weth, users, pool, oracle } = testEnv;
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const depositor = users[0];
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const borrower = users[1];
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//mints DAI to depositor
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await dai
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.connect(depositor.signer)
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.mint(await convertToCurrencyDecimals(dai.address, '1000'));
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//approve protocol to access depositor wallet
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await dai.connect(depositor.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
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//user 1 deposits 1000 DAI
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const amountDAItoDeposit = await convertToCurrencyDecimals(dai.address, '1000');
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await pool
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.connect(depositor.signer)
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.deposit(dai.address, amountDAItoDeposit, depositor.address, '0');
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//user 2 deposits 1 ETH
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const amountETHtoDeposit = await convertToCurrencyDecimals(weth.address, '1');
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//mints WETH to borrower
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await weth
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.connect(borrower.signer)
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.mint(await convertToCurrencyDecimals(weth.address, '1000'));
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//approve protocol to access the borrower wallet
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await weth.connect(borrower.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
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await pool
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.connect(borrower.signer)
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.deposit(weth.address, amountETHtoDeposit, borrower.address, '0');
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//user 2 borrows
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const userGlobalData = await pool.getUserAccountData(borrower.address);
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const daiPrice = await oracle.getAssetPrice(dai.address);
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const amountDAIToBorrow = await convertToCurrencyDecimals(
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dai.address,
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new BigNumber(userGlobalData.availableBorrowsETH.toString())
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.div(daiPrice.toString())
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.multipliedBy(0.95)
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.toFixed(0)
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);
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await pool
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.connect(borrower.signer)
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.borrow(dai.address, amountDAIToBorrow, RateMode.Stable, '0', borrower.address);
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const userGlobalDataAfter = await pool.getUserAccountData(borrower.address);
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expect(userGlobalDataAfter.currentLiquidationThreshold.toString()).to.be.bignumber.equal(
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'8250',
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INVALID_HF
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);
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});
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it('Drop the health factor below 1', async () => {
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const { dai, weth, users, pool, oracle } = testEnv;
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const borrower = users[1];
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const daiPrice = await oracle.getAssetPrice(dai.address);
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await oracle.setAssetPrice(
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dai.address,
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new BigNumber(daiPrice.toString()).multipliedBy(1.18).toFixed(0)
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);
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const userGlobalData = await pool.getUserAccountData(borrower.address);
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expect(userGlobalData.healthFactor.toString()).to.be.bignumber.lt(
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oneEther.toFixed(0),
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INVALID_HF
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);
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});
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it('Liquidates the borrow', async () => {
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const {
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dai,
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weth,
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@ -150,8 +144,16 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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helpersContract,
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flashLiquidationAdapter,
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} = testEnv;
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const liquidator = users[3];
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const borrower = users[1];
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const expectedSwap = ethers.utils.parseEther('0.4');
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const liquidatorWethBalanceBefore = await weth.balanceOf(liquidator.address);
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// Set how much ETH will be sold and swapped for DAI at Uniswap mock
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await (await mockUniswapRouter.setAmountToSwap(weth.address, expectedSwap)).wait();
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const collateralPrice = await oracle.getAssetPrice(weth.address);
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const principalPrice = await oracle.getAssetPrice(dai.address);
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const daiReserveDataBefore = await helpersContract.getReserveData(dai.address);
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@ -162,6 +164,7 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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dai.address,
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borrower.address
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);
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const collateralDecimals = (
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await helpersContract.getReserveConfigurationData(weth.address)
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).decimals.toString();
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@ -181,17 +184,12 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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.div(100)
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.decimalPlaces(0, BigNumber.ROUND_DOWN);
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await increaseTime(100);
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const flashLoanDebt = new BigNumber(amountToLiquidate.toString())
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.multipliedBy(1.0009)
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.toFixed(0);
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await mockUniswapRouter.setAmountOut(
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expectedCollateralLiquidated.toString(),
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weth.address,
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dai.address,
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flashLoanDebt
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const expectedProfit = ethers.BigNumber.from(expectedCollateralLiquidated.toString()).sub(
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expectedSwap
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);
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const params = buildFlashLiquidationAdapterParams(
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@ -212,13 +210,23 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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params,
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0
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);
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await expect(tx)
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// Expect Swapped event
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await expect(Promise.resolve(tx))
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.to.emit(flashLiquidationAdapter, 'Swapped')
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.withArgs(weth.address, dai.address, expectedSwap.toString(), flashLoanDebt);
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// Expect LiquidationCall event
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await expect(Promise.resolve(tx))
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.to.emit(pool, 'LiquidationCall')
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.withArgs(
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weth.address,
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dai.address,
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borrower.address,
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amountToLiquidate.toString(),
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expectedCollateralLiquidated.toString(),
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flashLoanDebt
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flashLiquidationAdapter.address,
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false
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);
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const userReserveDataAfter = await getUserData(
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@ -227,6 +235,7 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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dai.address,
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borrower.address
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);
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const liquidatorWethBalanceAfter = await weth.balanceOf(liquidator.address);
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const daiReserveDataAfter = await helpersContract.getReserveData(dai.address);
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const ethReserveDataAfter = await helpersContract.getReserveData(weth.address);
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@ -265,7 +274,7 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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expect(daiReserveDataAfter.availableLiquidity.toString()).to.be.bignumber.almostEqual(
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new BigNumber(daiReserveDataBefore.availableLiquidity.toString())
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.plus(amountToLiquidate)
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.plus(flashLoanDebt)
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.toFixed(0),
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'Invalid principal available liquidity'
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);
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@ -276,6 +285,410 @@ makeSuite('Uniswap adapters', (testEnv: TestEnv) => {
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.toFixed(0),
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'Invalid collateral available liquidity'
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);
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// Profit after flash loan liquidation
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expect(liquidatorWethBalanceAfter).to.be.equal(
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liquidatorWethBalanceBefore.add(expectedProfit),
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'Invalid expected WETH profit'
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);
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});
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});
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describe('executeOperation: succesfully liquidateCall and swap via Flash Loan without profits', () => {
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it('Liquidates the borrow', async () => {
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await depositAndHFBelowOne();
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await increaseTime(100);
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const {
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dai,
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weth,
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users,
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pool,
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oracle,
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helpersContract,
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flashLiquidationAdapter,
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} = testEnv;
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const liquidator = users[3];
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const borrower = users[1];
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const liquidatorWethBalanceBefore = await weth.balanceOf(liquidator.address);
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const collateralPrice = await oracle.getAssetPrice(weth.address);
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const principalPrice = await oracle.getAssetPrice(dai.address);
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const daiReserveDataBefore = await helpersContract.getReserveData(dai.address);
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const ethReserveDataBefore = await helpersContract.getReserveData(weth.address);
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const userReserveDataBefore = await getUserData(
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pool,
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helpersContract,
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dai.address,
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borrower.address
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);
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const collateralDecimals = (
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await helpersContract.getReserveConfigurationData(weth.address)
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).decimals.toString();
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const principalDecimals = (
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await helpersContract.getReserveConfigurationData(dai.address)
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).decimals.toString();
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const amountToLiquidate = userReserveDataBefore.currentStableDebt.div(2).toFixed(0);
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const expectedCollateralLiquidated = new BigNumber(principalPrice.toString())
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.times(new BigNumber(amountToLiquidate).times(105))
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.times(new BigNumber(10).pow(collateralDecimals))
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.div(
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new BigNumber(collateralPrice.toString()).times(
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new BigNumber(10).pow(principalDecimals)
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)
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)
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.div(100)
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.decimalPlaces(0, BigNumber.ROUND_DOWN);
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const flashLoanDebt = new BigNumber(amountToLiquidate.toString())
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.multipliedBy(1.0009)
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.toFixed(0);
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// Set how much ETH will be sold and swapped for DAI at Uniswap mock
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await (
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await mockUniswapRouter.setAmountToSwap(
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weth.address,
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expectedCollateralLiquidated.toString()
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)
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).wait();
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const params = buildFlashLiquidationAdapterParams(
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weth.address,
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dai.address,
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borrower.address,
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amountToLiquidate,
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false
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);
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const tx = await pool
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.connect(liquidator.signer)
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.flashLoan(
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flashLiquidationAdapter.address,
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[dai.address],
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[amountToLiquidate],
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[0],
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borrower.address,
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params,
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0
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);
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// Expect Swapped event
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await expect(Promise.resolve(tx))
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.to.emit(flashLiquidationAdapter, 'Swapped')
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.withArgs(
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weth.address,
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dai.address,
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expectedCollateralLiquidated.toString(),
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flashLoanDebt
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);
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// Expect LiquidationCall event
|
||||
await expect(Promise.resolve(tx))
|
||||
.to.emit(pool, 'LiquidationCall')
|
||||
.withArgs(
|
||||
weth.address,
|
||||
dai.address,
|
||||
borrower.address,
|
||||
amountToLiquidate.toString(),
|
||||
expectedCollateralLiquidated.toString(),
|
||||
flashLiquidationAdapter.address,
|
||||
false
|
||||
);
|
||||
|
||||
const userReserveDataAfter = await getUserData(
|
||||
pool,
|
||||
helpersContract,
|
||||
dai.address,
|
||||
borrower.address
|
||||
);
|
||||
const liquidatorWethBalanceAfter = await weth.balanceOf(liquidator.address);
|
||||
|
||||
const daiReserveDataAfter = await helpersContract.getReserveData(dai.address);
|
||||
const ethReserveDataAfter = await helpersContract.getReserveData(weth.address);
|
||||
|
||||
if (!tx.blockNumber) {
|
||||
expect(false, 'Invalid block number');
|
||||
return;
|
||||
}
|
||||
const txTimestamp = new BigNumber(
|
||||
(await DRE.ethers.provider.getBlock(tx.blockNumber)).timestamp
|
||||
);
|
||||
|
||||
const stableDebtBeforeTx = calcExpectedStableDebtTokenBalance(
|
||||
userReserveDataBefore.principalStableDebt,
|
||||
userReserveDataBefore.stableBorrowRate,
|
||||
userReserveDataBefore.stableRateLastUpdated,
|
||||
txTimestamp
|
||||
);
|
||||
|
||||
expect(userReserveDataAfter.currentStableDebt.toString()).to.be.bignumber.almostEqual(
|
||||
stableDebtBeforeTx.minus(amountToLiquidate).toFixed(0),
|
||||
'Invalid user debt after liquidation'
|
||||
);
|
||||
|
||||
//the liquidity index of the principal reserve needs to be bigger than the index before
|
||||
expect(daiReserveDataAfter.liquidityIndex.toString()).to.be.bignumber.gte(
|
||||
daiReserveDataBefore.liquidityIndex.toString(),
|
||||
'Invalid liquidity index'
|
||||
);
|
||||
|
||||
//the principal APY after a liquidation needs to be lower than the APY before
|
||||
expect(daiReserveDataAfter.liquidityRate.toString()).to.be.bignumber.lt(
|
||||
daiReserveDataBefore.liquidityRate.toString(),
|
||||
'Invalid liquidity APY'
|
||||
);
|
||||
|
||||
expect(daiReserveDataAfter.availableLiquidity.toString()).to.be.bignumber.almostEqual(
|
||||
new BigNumber(daiReserveDataBefore.availableLiquidity.toString())
|
||||
.plus(flashLoanDebt)
|
||||
.toFixed(0),
|
||||
'Invalid principal available liquidity'
|
||||
);
|
||||
|
||||
expect(ethReserveDataAfter.availableLiquidity.toString()).to.be.bignumber.almostEqual(
|
||||
new BigNumber(ethReserveDataBefore.availableLiquidity.toString())
|
||||
.minus(expectedCollateralLiquidated)
|
||||
.toFixed(0),
|
||||
'Invalid collateral available liquidity'
|
||||
);
|
||||
|
||||
// Net Profit == 0 after flash loan liquidation
|
||||
expect(liquidatorWethBalanceAfter).to.be.equal(
|
||||
liquidatorWethBalanceBefore,
|
||||
'Invalid expected WETH profit'
|
||||
);
|
||||
});
|
||||
});
|
||||
|
||||
describe('executeOperation: succesfully liquidateCall all available debt and swap via Flash Loan ', () => {
|
||||
it('Liquidates the borrow', async () => {
|
||||
await depositAndHFBelowOne();
|
||||
await increaseTime(100);
|
||||
|
||||
const {
|
||||
dai,
|
||||
weth,
|
||||
users,
|
||||
pool,
|
||||
oracle,
|
||||
helpersContract,
|
||||
flashLiquidationAdapter,
|
||||
} = testEnv;
|
||||
|
||||
const liquidator = users[3];
|
||||
const borrower = users[1];
|
||||
const liquidatorWethBalanceBefore = await weth.balanceOf(liquidator.address);
|
||||
|
||||
const collateralPrice = await oracle.getAssetPrice(weth.address);
|
||||
const principalPrice = await oracle.getAssetPrice(dai.address);
|
||||
const daiReserveDataBefore = await helpersContract.getReserveData(dai.address);
|
||||
const ethReserveDataBefore = await helpersContract.getReserveData(weth.address);
|
||||
const userReserveDataBefore = await getUserData(
|
||||
pool,
|
||||
helpersContract,
|
||||
dai.address,
|
||||
borrower.address
|
||||
);
|
||||
|
||||
const collateralDecimals = (
|
||||
await helpersContract.getReserveConfigurationData(weth.address)
|
||||
).decimals.toString();
|
||||
const principalDecimals = (
|
||||
await helpersContract.getReserveConfigurationData(dai.address)
|
||||
).decimals.toString();
|
||||
const amountToLiquidate = userReserveDataBefore.currentStableDebt.div(2).toFixed(0);
|
||||
const extraAmount = new BigNumber(amountToLiquidate).times('1.15').toFixed(0);
|
||||
|
||||
const expectedCollateralLiquidated = new BigNumber(principalPrice.toString())
|
||||
.times(new BigNumber(amountToLiquidate).times(105))
|
||||
.times(new BigNumber(10).pow(collateralDecimals))
|
||||
.div(
|
||||
new BigNumber(collateralPrice.toString()).times(
|
||||
new BigNumber(10).pow(principalDecimals)
|
||||
)
|
||||
)
|
||||
.div(100)
|
||||
.decimalPlaces(0, BigNumber.ROUND_DOWN);
|
||||
|
||||
const flashLoanDebt = new BigNumber(extraAmount.toString()).multipliedBy(1.0009).toFixed(0);
|
||||
|
||||
// Set how much ETH will be sold and swapped for DAI at Uniswap mock
|
||||
await (
|
||||
await mockUniswapRouter.setAmountToSwap(
|
||||
weth.address,
|
||||
expectedCollateralLiquidated.toString()
|
||||
)
|
||||
).wait();
|
||||
|
||||
const params = buildFlashLiquidationAdapterParams(
|
||||
weth.address,
|
||||
dai.address,
|
||||
borrower.address,
|
||||
MAX_UINT_AMOUNT,
|
||||
false
|
||||
);
|
||||
const tx = await pool
|
||||
.connect(liquidator.signer)
|
||||
.flashLoan(
|
||||
flashLiquidationAdapter.address,
|
||||
[dai.address],
|
||||
[extraAmount],
|
||||
[0],
|
||||
borrower.address,
|
||||
params,
|
||||
0
|
||||
);
|
||||
|
||||
// Expect Swapped event
|
||||
await expect(Promise.resolve(tx))
|
||||
.to.emit(flashLiquidationAdapter, 'Swapped')
|
||||
.withArgs(
|
||||
weth.address,
|
||||
dai.address,
|
||||
expectedCollateralLiquidated.toString(),
|
||||
flashLoanDebt
|
||||
);
|
||||
|
||||
// Expect LiquidationCall event
|
||||
await expect(Promise.resolve(tx)).to.emit(pool, 'LiquidationCall');
|
||||
});
|
||||
});
|
||||
|
||||
describe('executeOperation: invalid params', async () => {
|
||||
it('Revert if debt asset is different than requested flash loan token', async () => {
|
||||
await depositAndHFBelowOne();
|
||||
|
||||
const { dai, weth, users, pool, helpersContract, flashLiquidationAdapter } = testEnv;
|
||||
|
||||
const liquidator = users[3];
|
||||
const borrower = users[1];
|
||||
const expectedSwap = ethers.utils.parseEther('0.4');
|
||||
|
||||
// Set how much ETH will be sold and swapped for DAI at Uniswap mock
|
||||
await (await mockUniswapRouter.setAmountToSwap(weth.address, expectedSwap)).wait();
|
||||
|
||||
const userReserveDataBefore = await getUserData(
|
||||
pool,
|
||||
helpersContract,
|
||||
dai.address,
|
||||
borrower.address
|
||||
);
|
||||
|
||||
const amountToLiquidate = userReserveDataBefore.currentStableDebt.div(2).toFixed(0);
|
||||
|
||||
// Wrong debt asset
|
||||
const params = buildFlashLiquidationAdapterParams(
|
||||
weth.address,
|
||||
weth.address, // intentionally bad
|
||||
borrower.address,
|
||||
amountToLiquidate,
|
||||
false
|
||||
);
|
||||
await expect(
|
||||
pool
|
||||
.connect(liquidator.signer)
|
||||
.flashLoan(
|
||||
flashLiquidationAdapter.address,
|
||||
[dai.address],
|
||||
[amountToLiquidate],
|
||||
[0],
|
||||
borrower.address,
|
||||
params,
|
||||
0
|
||||
)
|
||||
).to.be.revertedWith('INCONSISTENT_PARAMS');
|
||||
});
|
||||
|
||||
it('Revert if debt asset amount to liquidate is greater than requested flash loan', async () => {
|
||||
await depositAndHFBelowOne();
|
||||
|
||||
const { dai, weth, users, pool, helpersContract, flashLiquidationAdapter } = testEnv;
|
||||
|
||||
const liquidator = users[3];
|
||||
const borrower = users[1];
|
||||
const expectedSwap = ethers.utils.parseEther('0.4');
|
||||
|
||||
// Set how much ETH will be sold and swapped for DAI at Uniswap mock
|
||||
await (await mockUniswapRouter.setAmountToSwap(weth.address, expectedSwap)).wait();
|
||||
|
||||
const userReserveDataBefore = await getUserData(
|
||||
pool,
|
||||
helpersContract,
|
||||
dai.address,
|
||||
borrower.address
|
||||
);
|
||||
|
||||
const amountToLiquidate = userReserveDataBefore.currentStableDebt.div(2);
|
||||
|
||||
// Correct params
|
||||
const params = buildFlashLiquidationAdapterParams(
|
||||
weth.address,
|
||||
dai.address,
|
||||
borrower.address,
|
||||
amountToLiquidate.toString(),
|
||||
false
|
||||
);
|
||||
// Bad flash loan params: requested DAI amount below amountToLiquidate
|
||||
await expect(
|
||||
pool
|
||||
.connect(liquidator.signer)
|
||||
.flashLoan(
|
||||
flashLiquidationAdapter.address,
|
||||
[dai.address],
|
||||
[amountToLiquidate.div(2).toString()],
|
||||
[0],
|
||||
borrower.address,
|
||||
params,
|
||||
0
|
||||
)
|
||||
).to.be.revertedWith('FLASH_COVER_NOT_ENOUGH');
|
||||
});
|
||||
|
||||
it('Revert if requested multiple assets', async () => {
|
||||
await depositAndHFBelowOne();
|
||||
|
||||
const { dai, weth, users, pool, helpersContract, flashLiquidationAdapter } = testEnv;
|
||||
|
||||
const liquidator = users[3];
|
||||
const borrower = users[1];
|
||||
const expectedSwap = ethers.utils.parseEther('0.4');
|
||||
|
||||
// Set how much ETH will be sold and swapped for DAI at Uniswap mock
|
||||
await (await mockUniswapRouter.setAmountToSwap(weth.address, expectedSwap)).wait();
|
||||
|
||||
const userReserveDataBefore = await getUserData(
|
||||
pool,
|
||||
helpersContract,
|
||||
dai.address,
|
||||
borrower.address
|
||||
);
|
||||
|
||||
const amountToLiquidate = userReserveDataBefore.currentStableDebt.div(2);
|
||||
|
||||
// Correct params
|
||||
const params = buildFlashLiquidationAdapterParams(
|
||||
weth.address,
|
||||
dai.address,
|
||||
borrower.address,
|
||||
amountToLiquidate.toString(),
|
||||
false
|
||||
);
|
||||
// Bad flash loan params: requested multiple assets
|
||||
await expect(
|
||||
pool
|
||||
.connect(liquidator.signer)
|
||||
.flashLoan(
|
||||
flashLiquidationAdapter.address,
|
||||
[dai.address, weth.address],
|
||||
[10, 10],
|
||||
[0],
|
||||
borrower.address,
|
||||
params,
|
||||
0
|
||||
)
|
||||
).to.be.revertedWith('INCONSISTENT_PARAMS');
|
||||
});
|
||||
});
|
||||
});
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user