mirror of
https://github.com/Instadapp/aave-protocol-v2.git
synced 2024-07-29 21:47:30 +00:00
Merge branch 'feat/26-repay-collateral' of gitlab.com:aave-tech/protocol-v2 into feat/26-repay-collateral
This commit is contained in:
eboado
commit
91e064eb31
695
test/flash-liquidation-with-collateral.spec.ts
Normal file
695
test/flash-liquidation-with-collateral.spec.ts
Normal file
|
|
@ -0,0 +1,695 @@
|
|||
import {TestEnv, makeSuite} from './helpers/make-suite';
|
||||
import {APPROVAL_AMOUNT_LENDING_POOL, oneEther} from '../helpers/constants';
|
||||
import {ethers} from 'ethers';
|
||||
import BigNumber from 'bignumber.js';
|
||||
import {
|
||||
calcExpectedVariableDebtTokenBalance,
|
||||
calcExpectedStableDebtTokenBalance,
|
||||
} from './helpers/utils/calculations';
|
||||
import {getContractsData} from './helpers/actions';
|
||||
import {waitForTx} from './__setup.spec';
|
||||
import {timeLatest} from '../helpers/misc-utils';
|
||||
import {tEthereumAddress, ProtocolErrors} from '../helpers/types';
|
||||
import {convertToCurrencyDecimals} from '../helpers/contracts-helpers';
|
||||
|
||||
const {expect} = require('chai');
|
||||
const {parseUnits, parseEther} = ethers.utils;
|
||||
|
||||
const expectRepayWithCollateralEvent = (
|
||||
events: ethers.Event[],
|
||||
pool: tEthereumAddress,
|
||||
collateral: tEthereumAddress,
|
||||
borrowing: tEthereumAddress,
|
||||
user: tEthereumAddress
|
||||
) => {
|
||||
if (!events || events.length < 14) {
|
||||
expect(false, 'INVALID_EVENTS_LENGTH_ON_REPAY_COLLATERAL');
|
||||
}
|
||||
|
||||
const repayWithCollateralEvent = events[13];
|
||||
|
||||
expect(repayWithCollateralEvent.address).to.be.equal(pool);
|
||||
expect(`0x${repayWithCollateralEvent.topics[1].slice(26)}`.toLowerCase()).to.be.equal(
|
||||
collateral.toLowerCase()
|
||||
);
|
||||
expect(`0x${repayWithCollateralEvent.topics[2].slice(26)}`).to.be.equal(borrowing.toLowerCase());
|
||||
expect(`0x${repayWithCollateralEvent.topics[3].slice(26)}`.toLowerCase()).to.be.equal(
|
||||
user.toLowerCase()
|
||||
);
|
||||
};
|
||||
|
||||
makeSuite('LendingPool. repayWithCollateral() with liquidator', (testEnv: TestEnv) => {
|
||||
const {INVALID_HF} = ProtocolErrors;
|
||||
|
||||
it('User 1 provides some liquidity for others to borrow', async () => {
|
||||
const {pool, weth, dai, usdc} = testEnv;
|
||||
|
||||
await weth.mint(parseEther('200'));
|
||||
await weth.approve(pool.address, parseEther('200'));
|
||||
await pool.deposit(weth.address, parseEther('200'), 0);
|
||||
await dai.mint(parseEther('20000'));
|
||||
await dai.approve(pool.address, parseEther('20000'));
|
||||
await pool.deposit(dai.address, parseEther('20000'), 0);
|
||||
await usdc.mint(parseEther('20000'));
|
||||
await usdc.approve(pool.address, parseEther('20000'));
|
||||
await pool.deposit(usdc.address, parseEther('20000'), 0);
|
||||
});
|
||||
|
||||
it('User 5 liquidate User 3 collateral, all his variable debt and part of the stable', async () => {
|
||||
const {pool, weth, usdc, users, mockSwapAdapter, oracle} = testEnv;
|
||||
const user = users[2];
|
||||
const liquidator = users[4];
|
||||
const amountToDeposit = parseEther('20');
|
||||
const amountToBorrow = parseUnits('40', 6);
|
||||
|
||||
await weth.connect(user.signer).mint(amountToDeposit);
|
||||
|
||||
await weth.connect(user.signer).approve(pool.address, amountToDeposit);
|
||||
await pool.connect(user.signer).deposit(weth.address, amountToDeposit, '0');
|
||||
|
||||
const usdcPrice = await oracle.getAssetPrice(usdc.address);
|
||||
|
||||
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 2, 0);
|
||||
|
||||
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 1, 0);
|
||||
|
||||
const {userData: wethUserDataBefore} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {
|
||||
reserveData: usdcReserveDataBefore,
|
||||
userData: usdcUserDataBefore,
|
||||
} = await getContractsData(usdc.address, user.address, testEnv);
|
||||
|
||||
// Set HF below 1
|
||||
await oracle.setAssetPrice(
|
||||
usdc.address,
|
||||
new BigNumber(usdcPrice.toString()).multipliedBy(60).toFixed(0)
|
||||
);
|
||||
const userGlobalDataPrior = await pool.getUserAccountData(user.address);
|
||||
expect(userGlobalDataPrior.healthFactor.toString()).to.be.bignumber.lt(oneEther, INVALID_HF);
|
||||
|
||||
const amountToRepay = parseUnits('80', 6);
|
||||
|
||||
await mockSwapAdapter.setAmountToReturn(amountToRepay);
|
||||
const txReceipt = await waitForTx(
|
||||
await pool
|
||||
.connect(liquidator.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
usdc.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
);
|
||||
const repayWithCollateralTimestamp = await timeLatest();
|
||||
|
||||
const {userData: wethUserDataAfter} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {userData: usdcUserDataAfter} = await getContractsData(
|
||||
usdc.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const collateralPrice = await oracle.getAssetPrice(weth.address);
|
||||
const principalPrice = await oracle.getAssetPrice(usdc.address);
|
||||
|
||||
const collateralDecimals = (
|
||||
await pool.getReserveConfigurationData(weth.address)
|
||||
).decimals.toString();
|
||||
const principalDecimals = (
|
||||
await pool.getReserveConfigurationData(usdc.address)
|
||||
).decimals.toString();
|
||||
|
||||
const expectedCollateralLiquidated = new BigNumber(principalPrice.toString())
|
||||
.times(new BigNumber(amountToRepay.toString()).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 expectedVariableDebtIncrease = calcExpectedVariableDebtTokenBalance(
|
||||
usdcReserveDataBefore,
|
||||
usdcUserDataBefore,
|
||||
new BigNumber(repayWithCollateralTimestamp)
|
||||
).minus(usdcUserDataBefore.currentVariableDebt);
|
||||
|
||||
const expectedStableDebtIncrease = calcExpectedStableDebtTokenBalance(
|
||||
usdcUserDataBefore,
|
||||
new BigNumber(repayWithCollateralTimestamp)
|
||||
).minus(usdcUserDataBefore.currentStableDebt);
|
||||
|
||||
expect(usdcUserDataAfter.currentVariableDebt).to.be.bignumber.equal(
|
||||
new BigNumber(usdcUserDataBefore.currentVariableDebt)
|
||||
.minus(amountToRepay.toString())
|
||||
.plus(expectedVariableDebtIncrease)
|
||||
.gte(0)
|
||||
? new BigNumber(usdcUserDataBefore.currentVariableDebt)
|
||||
.minus(amountToRepay.toString())
|
||||
.plus(expectedVariableDebtIncrease)
|
||||
.toString()
|
||||
: '0',
|
||||
'INVALID_VARIABLE_DEBT_POSITION'
|
||||
);
|
||||
|
||||
const stableDebtRepaid = new BigNumber(usdcUserDataBefore.currentVariableDebt)
|
||||
.minus(amountToRepay.toString())
|
||||
.plus(expectedVariableDebtIncrease)
|
||||
.abs();
|
||||
|
||||
expect(usdcUserDataAfter.currentStableDebt).to.be.bignumber.equal(
|
||||
new BigNumber(usdcUserDataBefore.currentStableDebt)
|
||||
.minus(stableDebtRepaid)
|
||||
.plus(expectedStableDebtIncrease)
|
||||
.gte(0)
|
||||
? new BigNumber(usdcUserDataBefore.currentStableDebt)
|
||||
.minus(stableDebtRepaid)
|
||||
.plus(expectedStableDebtIncrease)
|
||||
.toString()
|
||||
: '0',
|
||||
'INVALID_STABLE_DEBT_POSITION'
|
||||
);
|
||||
|
||||
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.equal(
|
||||
new BigNumber(wethUserDataBefore.currentATokenBalance).minus(
|
||||
expectedCollateralLiquidated.toString()
|
||||
),
|
||||
'INVALID_COLLATERAL_POSITION'
|
||||
);
|
||||
|
||||
const eventsEmitted = txReceipt.events || [];
|
||||
|
||||
expectRepayWithCollateralEvent(
|
||||
eventsEmitted,
|
||||
pool.address,
|
||||
weth.address,
|
||||
usdc.address,
|
||||
user.address
|
||||
);
|
||||
// Resets USDC Price
|
||||
await oracle.setAssetPrice(usdc.address, usdcPrice);
|
||||
});
|
||||
|
||||
it('User 3 deposits WETH and borrows USDC at Variable', async () => {
|
||||
const {pool, weth, usdc, users, oracle} = testEnv;
|
||||
const user = users[2];
|
||||
const amountToDeposit = parseEther('10');
|
||||
|
||||
await weth.connect(user.signer).mint(amountToDeposit);
|
||||
|
||||
await weth.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
await pool.connect(user.signer).deposit(weth.address, amountToDeposit, '0');
|
||||
|
||||
const userGlobalData = await pool.getUserAccountData(user.address);
|
||||
|
||||
const usdcPrice = await oracle.getAssetPrice(usdc.address);
|
||||
|
||||
const amountUSDCToBorrow = await convertToCurrencyDecimals(
|
||||
usdc.address,
|
||||
new BigNumber(userGlobalData.availableBorrowsETH.toString())
|
||||
.div(usdcPrice.toString())
|
||||
.multipliedBy(0.95)
|
||||
.toFixed(0)
|
||||
);
|
||||
|
||||
await pool.connect(user.signer).borrow(usdc.address, amountUSDCToBorrow, 2, 0);
|
||||
});
|
||||
|
||||
it('User 5 liquidates half the USDC loan of User 3 by swapping his WETH collateral', async () => {
|
||||
const {pool, weth, usdc, users, mockSwapAdapter, oracle} = testEnv;
|
||||
const user = users[2];
|
||||
const liquidator = users[4];
|
||||
// Sets USDC Price higher to decrease health factor below 1
|
||||
const usdcPrice = await oracle.getAssetPrice(usdc.address);
|
||||
|
||||
await oracle.setAssetPrice(
|
||||
usdc.address,
|
||||
new BigNumber(usdcPrice.toString()).multipliedBy(1.15).toFixed(0)
|
||||
);
|
||||
|
||||
const userGlobalData = await pool.getUserAccountData(user.address);
|
||||
|
||||
expect(userGlobalData.healthFactor.toString()).to.be.bignumber.lt(oneEther, INVALID_HF);
|
||||
|
||||
const {userData: wethUserDataBefore} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {
|
||||
reserveData: usdcReserveDataBefore,
|
||||
userData: usdcUserDataBefore,
|
||||
} = await getContractsData(usdc.address, user.address, testEnv);
|
||||
|
||||
const amountToRepay = usdcReserveDataBefore.totalBorrowsVariable.dividedBy(2).toFixed(0);
|
||||
|
||||
await mockSwapAdapter.setAmountToReturn(amountToRepay);
|
||||
await waitForTx(
|
||||
await pool
|
||||
.connect(liquidator.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
usdc.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
);
|
||||
const repayWithCollateralTimestamp = await timeLatest();
|
||||
|
||||
const {userData: wethUserDataAfter} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {userData: usdcUserDataAfter} = await getContractsData(
|
||||
usdc.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const collateralPrice = await oracle.getAssetPrice(weth.address);
|
||||
const principalPrice = await oracle.getAssetPrice(usdc.address);
|
||||
|
||||
const collateralDecimals = (
|
||||
await pool.getReserveConfigurationData(weth.address)
|
||||
).decimals.toString();
|
||||
const principalDecimals = (
|
||||
await pool.getReserveConfigurationData(usdc.address)
|
||||
).decimals.toString();
|
||||
|
||||
const expectedCollateralLiquidated = new BigNumber(principalPrice.toString())
|
||||
.times(new BigNumber(amountToRepay.toString()).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 expectedVariableDebtIncrease = calcExpectedVariableDebtTokenBalance(
|
||||
usdcReserveDataBefore,
|
||||
usdcUserDataBefore,
|
||||
new BigNumber(repayWithCollateralTimestamp)
|
||||
).minus(usdcUserDataBefore.currentVariableDebt);
|
||||
|
||||
expect(usdcUserDataAfter.currentVariableDebt).to.be.bignumber.almostEqual(
|
||||
new BigNumber(usdcUserDataBefore.currentVariableDebt)
|
||||
.minus(amountToRepay.toString())
|
||||
.plus(expectedVariableDebtIncrease)
|
||||
.toString(),
|
||||
'INVALID_DEBT_POSITION'
|
||||
);
|
||||
|
||||
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.equal(
|
||||
new BigNumber(wethUserDataBefore.currentATokenBalance).minus(
|
||||
expectedCollateralLiquidated.toString()
|
||||
),
|
||||
'INVALID_COLLATERAL_POSITION'
|
||||
);
|
||||
|
||||
// Resets USDC Price
|
||||
await oracle.setAssetPrice(usdc.address, usdcPrice);
|
||||
});
|
||||
|
||||
it('Revert expected. User 5 tries to liquidate an User 3 collateral a currency he havent borrow', async () => {
|
||||
const {pool, weth, dai, users, oracle, mockSwapAdapter, usdc} = testEnv;
|
||||
const user = users[2];
|
||||
const liquidator = users[4];
|
||||
|
||||
const amountToRepay = parseUnits('10', 6);
|
||||
|
||||
// Sets USDC Price higher to decrease health factor below 1
|
||||
const usdcPrice = await oracle.getAssetPrice(usdc.address);
|
||||
|
||||
await oracle.setAssetPrice(
|
||||
usdc.address,
|
||||
new BigNumber(usdcPrice.toString()).multipliedBy(6.4).toFixed(0)
|
||||
);
|
||||
const userGlobalData = await pool.getUserAccountData(user.address);
|
||||
|
||||
expect(userGlobalData.healthFactor.toString()).to.be.bignumber.lt(oneEther, INVALID_HF);
|
||||
|
||||
await expect(
|
||||
pool
|
||||
.connect(liquidator.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
dai.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
).to.be.revertedWith('revert CURRRENCY_NOT_BORROWED');
|
||||
|
||||
await oracle.setAssetPrice(usdc.address, usdcPrice);
|
||||
});
|
||||
|
||||
it('User 2 deposit WETH and borrows DAI at Variable', async () => {
|
||||
const {pool, weth, dai, users, oracle} = testEnv;
|
||||
const user = users[1];
|
||||
const amountToDeposit = ethers.utils.parseEther('1');
|
||||
|
||||
await weth.connect(user.signer).mint(amountToDeposit);
|
||||
|
||||
await weth.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
await pool.connect(user.signer).deposit(weth.address, amountToDeposit, '0');
|
||||
|
||||
const userGlobalData = await pool.getUserAccountData(user.address);
|
||||
|
||||
const daiPrice = await oracle.getAssetPrice(dai.address);
|
||||
|
||||
const amountDAIToBorrow = await convertToCurrencyDecimals(
|
||||
dai.address,
|
||||
new BigNumber(userGlobalData.availableBorrowsETH.toString())
|
||||
.div(daiPrice.toString())
|
||||
.multipliedBy(0.95)
|
||||
.toFixed(0)
|
||||
);
|
||||
|
||||
await pool.connect(user.signer).borrow(dai.address, amountDAIToBorrow, 2, 0);
|
||||
});
|
||||
it('User 5 tries to liquidate User 2 DAI Variable loan using his WETH collateral, with good HF', async () => {
|
||||
const {pool, weth, dai, users, mockSwapAdapter} = testEnv;
|
||||
const user = users[1];
|
||||
const liquidator = users[4];
|
||||
|
||||
const {reserveData: daiReserveDataBefore} = await getContractsData(
|
||||
dai.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
// First half
|
||||
const amountToRepay = daiReserveDataBefore.totalBorrowsVariable.dividedBy(2).toString();
|
||||
|
||||
await mockSwapAdapter.setAmountToReturn(amountToRepay);
|
||||
await expect(
|
||||
pool
|
||||
.connect(liquidator.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
dai.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
).to.be.revertedWith('HEALTH_FACTOR_ABOVE_THRESHOLD');
|
||||
});
|
||||
it('User 5 liquidates User 2 DAI Variable loan using his WETH collateral, half the amount', async () => {
|
||||
const {pool, weth, dai, users, mockSwapAdapter, oracle} = testEnv;
|
||||
const user = users[1];
|
||||
const liquidator = users[4];
|
||||
|
||||
// Sets DAI Price higher to decrease health factor below 1
|
||||
const daiPrice = await oracle.getAssetPrice(dai.address);
|
||||
|
||||
await oracle.setAssetPrice(
|
||||
dai.address,
|
||||
new BigNumber(daiPrice.toString()).multipliedBy(1.4).toFixed(0)
|
||||
);
|
||||
|
||||
const userGlobalData = await pool.getUserAccountData(user.address);
|
||||
|
||||
expect(userGlobalData.healthFactor.toString()).to.be.bignumber.lt(oneEther, INVALID_HF);
|
||||
|
||||
const {userData: wethUserDataBefore} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {reserveData: daiReserveDataBefore, userData: daiUserDataBefore} = await getContractsData(
|
||||
dai.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
// First half
|
||||
const amountToRepay = daiReserveDataBefore.totalBorrowsVariable.dividedBy(2).toString();
|
||||
|
||||
await mockSwapAdapter.setAmountToReturn(amountToRepay);
|
||||
await waitForTx(
|
||||
await pool
|
||||
.connect(liquidator.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
dai.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
);
|
||||
const repayWithCollateralTimestamp = await timeLatest();
|
||||
|
||||
const {userData: wethUserDataAfter} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {userData: daiUserDataAfter} = await getContractsData(dai.address, user.address, testEnv);
|
||||
|
||||
const collateralPrice = await oracle.getAssetPrice(weth.address);
|
||||
const principalPrice = await oracle.getAssetPrice(dai.address);
|
||||
|
||||
const collateralDecimals = (
|
||||
await pool.getReserveConfigurationData(weth.address)
|
||||
).decimals.toString();
|
||||
const principalDecimals = (
|
||||
await pool.getReserveConfigurationData(dai.address)
|
||||
).decimals.toString();
|
||||
|
||||
const expectedCollateralLiquidated = new BigNumber(principalPrice.toString())
|
||||
.times(new BigNumber(amountToRepay.toString()).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 expectedVariableDebtIncrease = calcExpectedVariableDebtTokenBalance(
|
||||
daiReserveDataBefore,
|
||||
daiUserDataBefore,
|
||||
new BigNumber(repayWithCollateralTimestamp)
|
||||
).minus(daiUserDataBefore.currentVariableDebt);
|
||||
|
||||
expect(daiUserDataAfter.currentVariableDebt).to.be.bignumber.almostEqual(
|
||||
new BigNumber(daiUserDataBefore.currentVariableDebt)
|
||||
.minus(amountToRepay.toString())
|
||||
.plus(expectedVariableDebtIncrease)
|
||||
.toString()
|
||||
);
|
||||
|
||||
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.equal(
|
||||
new BigNumber(wethUserDataBefore.currentATokenBalance).minus(
|
||||
expectedCollateralLiquidated.toString()
|
||||
)
|
||||
);
|
||||
// Resets DAI price
|
||||
await oracle.setAssetPrice(dai.address, daiPrice);
|
||||
});
|
||||
|
||||
it('User 2 tries to repay remaining DAI Variable loan using his WETH collateral', async () => {
|
||||
const {pool, weth, dai, users, mockSwapAdapter, oracle} = testEnv;
|
||||
const user = users[1];
|
||||
|
||||
const {userData: wethUserDataBefore} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {reserveData: daiReserveDataBefore, userData: daiUserDataBefore} = await getContractsData(
|
||||
dai.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
// Repay the remaining DAI
|
||||
const amountToRepay = daiReserveDataBefore.totalBorrowsVariable.toString();
|
||||
|
||||
await mockSwapAdapter.setAmountToReturn(amountToRepay);
|
||||
await waitForTx(
|
||||
await pool
|
||||
.connect(user.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
dai.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
);
|
||||
const repayWithCollateralTimestamp = await timeLatest();
|
||||
|
||||
const {userData: wethUserDataAfter} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {userData: daiUserDataAfter} = await getContractsData(dai.address, user.address, testEnv);
|
||||
|
||||
const collateralPrice = await oracle.getAssetPrice(weth.address);
|
||||
const principalPrice = await oracle.getAssetPrice(dai.address);
|
||||
|
||||
const collateralDecimals = (
|
||||
await pool.getReserveConfigurationData(weth.address)
|
||||
).decimals.toString();
|
||||
const principalDecimals = (
|
||||
await pool.getReserveConfigurationData(dai.address)
|
||||
).decimals.toString();
|
||||
|
||||
const expectedCollateralLiquidated = new BigNumber(principalPrice.toString())
|
||||
.times(new BigNumber(amountToRepay.toString()).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 expectedVariableDebtIncrease = calcExpectedVariableDebtTokenBalance(
|
||||
daiReserveDataBefore,
|
||||
daiUserDataBefore,
|
||||
new BigNumber(repayWithCollateralTimestamp)
|
||||
).minus(daiUserDataBefore.currentVariableDebt);
|
||||
|
||||
expect(daiUserDataAfter.currentVariableDebt).to.be.bignumber.almostEqual(
|
||||
new BigNumber(daiUserDataBefore.currentVariableDebt)
|
||||
.minus(amountToRepay.toString())
|
||||
.plus(expectedVariableDebtIncrease)
|
||||
.toString()
|
||||
);
|
||||
|
||||
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.equal(
|
||||
new BigNumber(wethUserDataBefore.currentATokenBalance).minus(
|
||||
expectedCollateralLiquidated.toString()
|
||||
)
|
||||
);
|
||||
});
|
||||
|
||||
it.skip('WIP Liquidator tries to repay 4 user a bigger amount that what can be swapped of a particular collateral, repaying only the maximum allowed by that collateral', async () => {
|
||||
const {pool, weth, dai, users, mockSwapAdapter, oracle} = testEnv;
|
||||
const user = users[3];
|
||||
const liquidator = users[5];
|
||||
|
||||
const amountToDepositWeth = parseEther('0.1');
|
||||
const amountToDepositDAI = parseEther('500');
|
||||
const amountToBorrowVariable = parseEther('80');
|
||||
|
||||
await weth.connect(user.signer).mint(amountToDepositWeth);
|
||||
await dai.connect(user.signer).mint(amountToDepositDAI);
|
||||
await weth.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
await dai.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
|
||||
|
||||
await pool.connect(user.signer).deposit(weth.address, amountToDepositWeth, '0');
|
||||
await pool.connect(user.signer).deposit(dai.address, amountToDepositDAI, '0');
|
||||
|
||||
await pool.connect(user.signer).borrow(dai.address, amountToBorrowVariable, 2, 0);
|
||||
|
||||
const amountToRepay = parseEther('80');
|
||||
|
||||
const {userData: wethUserDataBefore} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {reserveData: daiReserveDataBefore, userData: daiUserDataBefore} = await getContractsData(
|
||||
dai.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
const wethPrice = await oracle.getAssetPrice(weth.address);
|
||||
// Set HF below 1
|
||||
await oracle.setAssetPrice(
|
||||
weth.address,
|
||||
new BigNumber(wethPrice.toString()).multipliedBy(0.1).toFixed(0)
|
||||
);
|
||||
const userGlobalDataPrior = await pool.getUserAccountData(user.address);
|
||||
expect(userGlobalDataPrior.healthFactor.toString()).to.be.bignumber.lt(oneEther, INVALID_HF);
|
||||
await mockSwapAdapter.setAmountToReturn(amountToRepay);
|
||||
await waitForTx(
|
||||
await pool
|
||||
.connect(liquidator.signer)
|
||||
.repayWithCollateral(
|
||||
weth.address,
|
||||
dai.address,
|
||||
user.address,
|
||||
amountToRepay,
|
||||
mockSwapAdapter.address,
|
||||
'0x'
|
||||
)
|
||||
);
|
||||
const repayWithCollateralTimestamp = await timeLatest();
|
||||
|
||||
const {userData: wethUserDataAfter} = await getContractsData(
|
||||
weth.address,
|
||||
user.address,
|
||||
testEnv
|
||||
);
|
||||
|
||||
const {userData: daiUserDataAfter} = await getContractsData(dai.address, user.address, testEnv);
|
||||
|
||||
const collateralPrice = await oracle.getAssetPrice(weth.address);
|
||||
const principalPrice = await oracle.getAssetPrice(dai.address);
|
||||
|
||||
const collateralConfig = await pool.getReserveConfigurationData(weth.address);
|
||||
|
||||
const collateralDecimals = collateralConfig.decimals.toString();
|
||||
const principalDecimals = (
|
||||
await pool.getReserveConfigurationData(dai.address)
|
||||
).decimals.toString();
|
||||
const collateralLiquidationBonus = collateralConfig.liquidationBonus.toString();
|
||||
|
||||
const expectedDebtCovered = new BigNumber(collateralPrice.toString())
|
||||
.times(new BigNumber(wethUserDataBefore.currentATokenBalance.toString()))
|
||||
.times(new BigNumber(10).pow(principalDecimals))
|
||||
.div(
|
||||
new BigNumber(principalPrice.toString()).times(new BigNumber(10).pow(collateralDecimals))
|
||||
)
|
||||
.div(new BigNumber(collateralLiquidationBonus).div(10000).toString())
|
||||
.decimalPlaces(0, BigNumber.ROUND_DOWN);
|
||||
|
||||
const expectedVariableDebtIncrease = calcExpectedVariableDebtTokenBalance(
|
||||
daiReserveDataBefore,
|
||||
daiUserDataBefore,
|
||||
new BigNumber(repayWithCollateralTimestamp)
|
||||
).minus(daiUserDataBefore.currentVariableDebt);
|
||||
|
||||
expect(daiUserDataAfter.currentVariableDebt).to.be.bignumber.equal(
|
||||
new BigNumber(daiUserDataBefore.currentVariableDebt)
|
||||
.minus(expectedDebtCovered.toString())
|
||||
.plus(expectedVariableDebtIncrease),
|
||||
'INVALID_VARIABLE_DEBT_POSITION'
|
||||
);
|
||||
|
||||
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.equal(0);
|
||||
// Resets WETH Price
|
||||
await oracle.setAssetPrice(weth.address, wethPrice);
|
||||
});
|
||||
});
|
||||
Loading…
Reference in New Issue
Block a user