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Remove swapLiquidity/repayWithCollateral

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This commit is contained in:
The3D 2020-10-22 11:50:04 +02:00
parent 7ddf18b823
commit b7efa920ca
10 changed files with 50 additions and 2519 deletions
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37
contracts/interfaces/ILendingPool.sol
View File

@ -259,27 +259,6 @@ interface ILendingPool {
bool receiveAToken
) external;
/**
* @dev flashes the underlying collateral on an user to swap for the owed asset and repay
* - Both the owner of the position and other liquidators can execute it
* - The owner can repay with his collateral at any point, no matter the health factor
* - Other liquidators can only use this function below 1 HF. To liquidate 50% of the debt > HF 0.98 or the whole below
* @param collateral The address of the collateral asset
* @param principal The address of the owed asset
* @param user Address of the borrower
* @param principalAmount Amount of the debt to repay. type(uint256).max to repay the maximum possible
* @param receiver Address of the contract receiving the collateral to swap
* @param params Variadic bytes param to pass with extra information to the receiver
**/
function repayWithCollateral(
address collateral,
address principal,
address user,
uint256 principalAmount,
address receiver,
bytes calldata params
) external;
/**
* @dev allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned. NOTE There are security concerns for developers of flashloan receiver contracts
@ -299,22 +278,6 @@ interface ILendingPool {
uint16 referralCode
) external;
/**
* @dev Allows an user to release one of his assets deposited in the protocol, even if it is used as collateral, to swap for another.
* - It's not possible to release one asset to swap for the same
* @param receiverAddress The address of the contract receiving the funds. The receiver should implement the ISwapAdapter interface
* @param fromAsset Asset to swap from
* @param toAsset Asset to swap to
* @param params a bytes array to be sent (if needed) to the receiver contract with extra data
**/
function swapLiquidity(
address receiverAddress,
address fromAsset,
address toAsset,
uint256 amountToSwap,
bytes calldata params
) external;
function getUserAccountData(address user)
external
view

87
contracts/lendingpool/LendingPool.sol
View File

@ -482,55 +482,6 @@ contract LendingPool is VersionedInitializable, ILendingPool, LendingPoolStorage
}
}
/**
* @dev flashes the underlying collateral on an user to swap for the owed asset and repay
* - Both the owner of the position and other liquidators can execute it
* - The owner can repay with his collateral at any point, no matter the health factor
* - Other liquidators can only use this function below 1 HF. To liquidate 50% of the debt > HF 0.98 or the whole below
* @param collateral The address of the collateral asset
* @param principal The address of the owed asset
* @param user Address of the borrower
* @param principalAmount Amount of the debt to repay. type(uint256).max to repay the maximum possible
* @param receiver Address of the contract receiving the collateral to swap
* @param params Variadic bytes param to pass with extra information to the receiver
**/
function repayWithCollateral(
address collateral,
address principal,
address user,
uint256 principalAmount,
address receiver,
bytes calldata params
) external override {
_whenNotPaused();
require(!_flashLiquidationLocked, Errors.REENTRANCY_NOT_ALLOWED);
_flashLiquidationLocked = true;
address collateralManager = _addressesProvider.getLendingPoolCollateralManager();
//solium-disable-next-line
(bool success, bytes memory result) = collateralManager.delegatecall(
abi.encodeWithSignature(
'repayWithCollateral(address,address,address,uint256,address,bytes)',
collateral,
principal,
user,
principalAmount,
receiver,
params
)
);
require(success, Errors.FAILED_REPAY_WITH_COLLATERAL);
(uint256 returnCode, string memory returnMessage) = abi.decode(result, (uint256, string));
if (returnCode != 0) {
revert(string(abi.encodePacked(returnMessage)));
}
_flashLiquidationLocked = false;
}
struct FlashLoanLocalVars {
uint256 premium;
uint256 amountPlusPremium;
@ -609,44 +560,6 @@ contract LendingPool is VersionedInitializable, ILendingPool, LendingPoolStorage
}
}
/**
* @dev Allows an user to release one of his assets deposited in the protocol, even if it is used as collateral, to swap for another.
* - It's not possible to release one asset to swap for the same
* @param receiverAddress The address of the contract receiving the funds. The receiver should implement the ISwapAdapter interface
* @param fromAsset Asset to swap from
* @param toAsset Asset to swap to
* @param params a bytes array to be sent (if needed) to the receiver contract with extra data
**/
function swapLiquidity(
address receiverAddress,
address fromAsset,
address toAsset,
uint256 amountToSwap,
bytes calldata params
) external override {
_whenNotPaused();
address collateralManager = _addressesProvider.getLendingPoolCollateralManager();
//solium-disable-next-line
(bool success, bytes memory result) = collateralManager.delegatecall(
abi.encodeWithSignature(
'swapLiquidity(address,address,address,uint256,bytes)',
receiverAddress,
fromAsset,
toAsset,
amountToSwap,
params
)
);
require(success, Errors.FAILED_COLLATERAL_SWAP);
(uint256 returnCode, string memory returnMessage) = abi.decode(result, (uint256, string));
if (returnCode != 0) {
revert(string(abi.encodePacked(returnMessage)));
}
}
/**
* @dev returns the state and configuration of the reserve
* @param asset the address of the reserve

285
contracts/lendingpool/LendingPoolCollateralManager.sol
View File

@ -58,24 +58,6 @@ contract LendingPoolCollateralManager is VersionedInitializable, LendingPoolStor
bool receiveAToken
);
/**
@dev emitted when a borrower/liquidator repays with the borrower's collateral
@param collateral the address of the collateral being swapped to repay
@param principal the address of the reserve of the debt
@param user the borrower's address
@param liquidator the address of the liquidator, same as the one of the borrower on self-repayment
@param principalAmount the amount of the debt finally covered
@param swappedCollateralAmount the amount of collateral finally swapped
*/
event RepaidWithCollateral(
address indexed collateral,
address indexed principal,
address indexed user,
address liquidator,
uint256 principalAmount,
uint256 swappedCollateralAmount
);
struct LiquidationCallLocalVars {
uint256 userCollateralBalance;
uint256 userStableDebt;
@ -96,16 +78,6 @@ contract LendingPoolCollateralManager is VersionedInitializable, LendingPoolStor
string errorMsg;
}
struct SwapLiquidityLocalVars {
uint256 healthFactor;
uint256 amountToReceive;
uint256 userBalanceBefore;
IAToken fromReserveAToken;
IAToken toReserveAToken;
uint256 errorCode;
string errorMsg;
}
struct AvailableCollateralToLiquidateLocalVars {
uint256 userCompoundedBorrowBalance;
uint256 liquidationBonus;
@ -189,7 +161,7 @@ contract LendingPoolCollateralManager is VersionedInitializable, LendingPoolStor
(
vars.maxCollateralToLiquidate,
vars.principalAmountNeeded
) = calculateAvailableCollateralToLiquidate(
) = _calculateAvailableCollateralToLiquidate(
collateralReserve,
principalReserve,
collateral,
@ -295,259 +267,6 @@ contract LendingPoolCollateralManager is VersionedInitializable, LendingPoolStor
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.NO_ERRORS);
}
/**
* @dev flashes the underlying collateral on an user to swap for the owed asset and repay
* - Both the owner of the position and other liquidators can execute it.
* - The owner can repay with his collateral at any point, no matter the health factor.
* - Other liquidators can only use this function below 1 HF. To liquidate 50% of the debt > HF 0.98 or the whole below.
* @param collateral The address of the collateral asset.
* @param principal The address of the owed asset.
* @param user Address of the borrower.
* @param principalAmount Amount of the debt to repay.
* @param receiver Address of the contract receiving the collateral to swap.
* @param params Variadic bytes param to pass with extra information to the receiver
**/
function repayWithCollateral(
address collateral,
address principal,
address user,
uint256 principalAmount,
address receiver,
bytes calldata params
) external returns (uint256, string memory) {
ReserveLogic.ReserveData storage collateralReserve = _reserves[collateral];
ReserveLogic.ReserveData storage debtReserve = _reserves[principal];
UserConfiguration.Map storage userConfig = _usersConfig[user];
LiquidationCallLocalVars memory vars;
(, , , , vars.healthFactor) = GenericLogic.calculateUserAccountData(
user,
_reserves,
_usersConfig[user],
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
(vars.userStableDebt, vars.userVariableDebt) = Helpers.getUserCurrentDebt(user, debtReserve);
(vars.errorCode, vars.errorMsg) = ValidationLogic.validateRepayWithCollateral(
collateralReserve,
debtReserve,
userConfig,
user,
vars.healthFactor,
vars.userStableDebt,
vars.userVariableDebt
);
if (Errors.CollateralManagerErrors(vars.errorCode) != Errors.CollateralManagerErrors.NO_ERROR) {
return (vars.errorCode, vars.errorMsg);
}
vars.maxPrincipalAmountToLiquidate = vars.userStableDebt.add(vars.userVariableDebt);
vars.actualAmountToLiquidate = principalAmount > vars.maxPrincipalAmountToLiquidate
? vars.maxPrincipalAmountToLiquidate
: principalAmount;
vars.collateralAtoken = IAToken(collateralReserve.aTokenAddress);
vars.userCollateralBalance = vars.collateralAtoken.balanceOf(user);
(
vars.maxCollateralToLiquidate,
vars.principalAmountNeeded
) = calculateAvailableCollateralToLiquidate(
collateralReserve,
debtReserve,
collateral,
principal,
vars.actualAmountToLiquidate,
vars.userCollateralBalance
);
//if principalAmountNeeded < vars.ActualAmountToLiquidate, there isn't enough
//of collateral to cover the actual amount that is being liquidated, hence we liquidate
//a smaller amount
if (vars.principalAmountNeeded < vars.actualAmountToLiquidate) {
vars.actualAmountToLiquidate = vars.principalAmountNeeded;
}
//updating collateral reserve indexes
collateralReserve.updateState();
//updating collateral reserve interest rates
collateralReserve.updateInterestRates(
collateral,
address(vars.collateralAtoken),
0,
vars.maxCollateralToLiquidate
);
vars.collateralAtoken.burn(
user,
receiver,
vars.maxCollateralToLiquidate,
collateralReserve.liquidityIndex
);
if (vars.userCollateralBalance == vars.maxCollateralToLiquidate) {
_usersConfig[user].setUsingAsCollateral(collateralReserve.id, false);
}
vars.principalAToken = debtReserve.aTokenAddress;
// Notifies the receiver to proceed, sending as param the underlying already transferred
ISwapAdapter(receiver).executeOperation(
collateral,
principal,
vars.maxCollateralToLiquidate,
address(this),
params
);
//updating debt reserve
debtReserve.updateState();
debtReserve.updateInterestRates(
principal,
vars.principalAToken,
vars.actualAmountToLiquidate,
0
);
IERC20(principal).safeTransferFrom(
receiver,
vars.principalAToken,
vars.actualAmountToLiquidate
);
if (vars.userVariableDebt >= vars.actualAmountToLiquidate) {
IVariableDebtToken(debtReserve.variableDebtTokenAddress).burn(
user,
vars.actualAmountToLiquidate,
debtReserve.variableBorrowIndex
);
} else {
IVariableDebtToken(debtReserve.variableDebtTokenAddress).burn(
user,
vars.userVariableDebt,
debtReserve.variableBorrowIndex
);
IStableDebtToken(debtReserve.stableDebtTokenAddress).burn(
user,
vars.actualAmountToLiquidate.sub(vars.userVariableDebt)
);
}
emit RepaidWithCollateral(
collateral,
principal,
user,
msg.sender,
vars.actualAmountToLiquidate,
vars.maxCollateralToLiquidate
);
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.NO_ERRORS);
}
/**
* @dev Allows an user to release one of his assets deposited in the protocol, even if it is used as collateral, to swap for another.
* - It's not possible to release one asset to swap for the same
* @param receiverAddress The address of the contract receiving the funds. The receiver should implement the ISwapAdapter interface
* @param fromAsset Asset to swap from
* @param toAsset Asset to swap to
* @param params a bytes array to be sent (if needed) to the receiver contract with extra data
**/
function swapLiquidity(
address receiverAddress,
address fromAsset,
address toAsset,
uint256 amountToSwap,
bytes calldata params
) external returns (uint256, string memory) {
ReserveLogic.ReserveData storage fromReserve = _reserves[fromAsset];
ReserveLogic.ReserveData storage toReserve = _reserves[toAsset];
SwapLiquidityLocalVars memory vars;
(vars.errorCode, vars.errorMsg) = ValidationLogic.validateSwapLiquidity(
fromReserve,
toReserve,
fromAsset,
toAsset
);
if (Errors.CollateralManagerErrors(vars.errorCode) != Errors.CollateralManagerErrors.NO_ERROR) {
return (vars.errorCode, vars.errorMsg);
}
vars.fromReserveAToken = IAToken(fromReserve.aTokenAddress);
vars.toReserveAToken = IAToken(toReserve.aTokenAddress);
fromReserve.updateState();
toReserve.updateState();
if (vars.fromReserveAToken.balanceOf(msg.sender) == amountToSwap) {
_usersConfig[msg.sender].setUsingAsCollateral(fromReserve.id, false);
}
fromReserve.updateInterestRates(fromAsset, address(vars.fromReserveAToken), 0, amountToSwap);
vars.fromReserveAToken.burn(
msg.sender,
receiverAddress,
amountToSwap,
fromReserve.liquidityIndex
);
// Notifies the receiver to proceed, sending as param the underlying already transferred
ISwapAdapter(receiverAddress).executeOperation(
fromAsset,
toAsset,
amountToSwap,
address(this),
params
);
vars.amountToReceive = IERC20(toAsset).balanceOf(receiverAddress);
if (vars.amountToReceive != 0) {
IERC20(toAsset).safeTransferFrom(
receiverAddress,
address(vars.toReserveAToken),
vars.amountToReceive
);
if (vars.toReserveAToken.balanceOf(msg.sender) == 0) {
_usersConfig[msg.sender].setUsingAsCollateral(toReserve.id, true);
}
vars.toReserveAToken.mint(msg.sender, vars.amountToReceive, toReserve.liquidityIndex);
toReserve.updateInterestRates(
toAsset,
address(vars.toReserveAToken),
vars.amountToReceive,
0
);
}
(, , , , vars.healthFactor) = GenericLogic.calculateUserAccountData(
msg.sender,
_reserves,
_usersConfig[msg.sender],
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
if (vars.healthFactor < GenericLogic.HEALTH_FACTOR_LIQUIDATION_THRESHOLD) {
return (
uint256(Errors.CollateralManagerErrors.HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD),
Errors.HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD
);
}
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.NO_ERRORS);
}
/**
* @dev calculates how much of a specific collateral can be liquidated, given
* a certain amount of principal currency. This function needs to be called after
@ -559,7 +278,7 @@ contract LendingPoolCollateralManager is VersionedInitializable, LendingPoolStor
* @return collateralAmount the maximum amount that is possible to liquidated given all the liquidation constraints (user balance, close factor)
* @return principalAmountNeeded the purchase amount
**/
function calculateAvailableCollateralToLiquidate(
function _calculateAvailableCollateralToLiquidate(
ReserveLogic.ReserveData storage collateralReserve,
ReserveLogic.ReserveData storage principalReserve,
address collateralAddress,

91
contracts/libraries/logic/ValidationLogic.sol
View File

@ -384,95 +384,4 @@ library ValidationLogic {
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.NO_ERRORS);
}
/**
* @dev Validates the repayWithCollateral() action
* @param collateralReserve The reserve data of the collateral
* @param principalReserve The reserve data of the principal
* @param userConfig The user configuration
* @param user The address of the user
* @param userHealthFactor The user's health factor
* @param userStableDebt Total stable debt balance of the user
* @param userVariableDebt Total variable debt balance of the user
**/
function validateRepayWithCollateral(
ReserveLogic.ReserveData storage collateralReserve,
ReserveLogic.ReserveData storage principalReserve,
UserConfiguration.Map storage userConfig,
address user,
uint256 userHealthFactor,
uint256 userStableDebt,
uint256 userVariableDebt
) internal view returns (uint256, string memory) {
if (
!collateralReserve.configuration.getActive() || !principalReserve.configuration.getActive()
) {
return (uint256(Errors.CollateralManagerErrors.NO_ACTIVE_RESERVE), Errors.NO_ACTIVE_RESERVE);
}
if (
msg.sender != user && userHealthFactor >= GenericLogic.HEALTH_FACTOR_LIQUIDATION_THRESHOLD
) {
return (
uint256(Errors.CollateralManagerErrors.HEALTH_FACTOR_ABOVE_THRESHOLD),
Errors.HEALTH_FACTOR_NOT_BELOW_THRESHOLD
);
}
if (msg.sender != user) {
bool isCollateralEnabled = collateralReserve.configuration.getLiquidationThreshold() > 0 &&
userConfig.isUsingAsCollateral(collateralReserve.id);
//if collateral isn't enabled as collateral by user, it cannot be liquidated
if (!isCollateralEnabled) {
return (
uint256(Errors.CollateralManagerErrors.COLLATERAL_CANNOT_BE_LIQUIDATED),
Errors.COLLATERAL_CANNOT_BE_LIQUIDATED
);
}
}
if (userStableDebt == 0 && userVariableDebt == 0) {
return (
uint256(Errors.CollateralManagerErrors.CURRRENCY_NOT_BORROWED),
Errors.SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER
);
}
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.NO_ERRORS);
}
/**
* @dev Validates the swapLiquidity() action
* @param fromReserve The reserve data of the asset to swap from
* @param toReserve The reserve data of the asset to swap to
* @param fromAsset Address of the asset to swap from
* @param toAsset Address of the asset to swap to
**/
function validateSwapLiquidity(
ReserveLogic.ReserveData storage fromReserve,
ReserveLogic.ReserveData storage toReserve,
address fromAsset,
address toAsset
) internal view returns (uint256, string memory) {
if (fromAsset == toAsset) {
return (
uint256(Errors.CollateralManagerErrors.INVALID_EQUAL_ASSETS_TO_SWAP),
Errors.INVALID_EQUAL_ASSETS_TO_SWAP
);
}
(bool isToActive, bool isToFreezed, , ) = toReserve.configuration.getFlags();
if (!fromReserve.configuration.getActive() || !isToActive) {
return (uint256(Errors.CollateralManagerErrors.NO_ACTIVE_RESERVE), Errors.NO_ACTIVE_RESERVE);
}
if (isToFreezed) {
return (
uint256(Errors.CollateralManagerErrors.NO_UNFREEZED_RESERVE),
Errors.NO_UNFREEZED_RESERVE
);
}
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.NO_ERRORS);
}
}

59
contracts/mocks/flashloan/MockSwapAdapter.sol
View File

@ -1,59 +0,0 @@
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.8;
import {MintableERC20} from '../tokens/MintableERC20.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {ISwapAdapter} from '../../interfaces/ISwapAdapter.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
contract MockSwapAdapter is ISwapAdapter {
uint256 internal _amountToReturn;
bool internal _tryReentrancy;
ILendingPoolAddressesProvider public addressesProvider;
event Swapped(address fromAsset, address toAsset, uint256 fromAmount, uint256 receivedAmount);
constructor(ILendingPoolAddressesProvider provider) public {
addressesProvider = provider;
}
function setAmountToReturn(uint256 amount) public {
_amountToReturn = amount;
}
function setTryReentrancy(bool tryReentrancy) public {
_tryReentrancy = tryReentrancy;
}
function executeOperation(
address assetToSwapFrom,
address assetToSwapTo,
uint256 amountToSwap,
address fundsDestination,
bytes calldata params
) external override {
params;
IERC20(assetToSwapFrom).transfer(address(1), amountToSwap); // We don't want to keep funds here
MintableERC20(assetToSwapTo).mint(_amountToReturn);
IERC20(assetToSwapTo).approve(fundsDestination, _amountToReturn);
if (_tryReentrancy) {
ILendingPool(fundsDestination).repayWithCollateral(
assetToSwapFrom,
assetToSwapTo,
address(1), // Doesn't matter, we just want to test the reentrancy
1 ether, // Same
address(1), // Same
'0x'
);
}
emit Swapped(assetToSwapFrom, assetToSwapTo, amountToSwap, _amountToReturn);
}
function burnAsset(IERC20 asset, uint256 amount) public {
uint256 amountToBurn = (amount == type(uint256).max) ? asset.balanceOf(address(this)) : amount;
asset.transfer(address(0), amountToBurn);
}
}

96
deployed-contracts.json
View File

@ -5,7 +5,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x58F132FBB86E21545A4Bace3C19f1C05d86d7A22",
"address": "0xDFbeeed692AA81E7f86E72F7ACbEA2A1C4d63544",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -19,7 +19,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xa4bcDF64Cdd5451b6ac3743B414124A6299B65FF",
"address": "0x5191aA68c7dB195181Dd2441dBE23A48EA24b040",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -37,7 +37,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x5A0773Ff307Bf7C71a832dBB5312237fD3437f9F",
"address": "0xa89E20284Bd638F31b0011D0fC754Fc9d2fa73e3",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -73,7 +73,7 @@
"address": "0x6642B57e4265BAD868C17Fc1d1F4F88DBBA04Aa8"
},
"localhost": {
"address": "0x65e0Cd5B8904A02f2e00BC6f58bf881998D54BDe"
"address": "0x9Ec55627757348b322c8dD0865D704649bFa0c7b"
},
"kovan": {
"address": "0x1339f3c1FfF00D0FD8946187fdC61F0ef0fFe786"
@ -89,7 +89,7 @@
"address": "0xD9273d497eDBC967F39d419461CfcF382a0A822e"
},
"localhost": {
"address": "0x5d12dDe3286D94E0d85F9D3B01B7099cfA0aBCf1"
"address": "0x3EE716e38f21e5FC16BFDB773db24D63C637A5d8"
},
"kovan": {
"address": "0xB43CCfF1148bb5ab2104E2ee68A7c30cDEBb9A9C"
@ -101,7 +101,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x1750499D05Ed1674d822430FB960d5F6731fDf64",
"address": "0x5889354f21A1C8D8D2f82669d778f6Dab778B519",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -115,7 +115,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xEC1C93A9f6a9e18E97784c76aC52053587FcDB89",
"address": "0xC452C5244F701108B4e8E8BCe693160046b30332",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -129,7 +129,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x7B6C3e5486D9e6959441ab554A889099eed76290",
"address": "0x0B63c002cb44B2e5e580C3B3560a27F4101D95c0",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -147,7 +147,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xD83D2773a7873ae2b5f8Fb92097e20a8C64F691E",
"address": "0xCeB290A2C6614BF23B2faa0f0B8067F29C48DB0F",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -165,7 +165,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x626FdE749F9d499d3777320CAf29484B624ab84a",
"address": "0x7C95b1ad025F0C9aB14192f87bF2aD53889bE4F7",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -227,7 +227,7 @@
"address": "0xBEF0d4b9c089a5883741fC14cbA352055f35DDA2"
},
"localhost": {
"address": "0x2B681757d757fbB80cc51c6094cEF5eE75bF55aA"
"address": "0x9c91aEaD98b1354C7B0EAfb8ff539d0796c79894"
},
"coverage": {
"address": "0x2B681757d757fbB80cc51c6094cEF5eE75bF55aA"
@ -235,11 +235,11 @@
},
"WalletBalanceProvider": {
"buidlerevm": {
"address": "0xC6bA6049F86d528698B5924B8fC2FE7289D38578",
"address": "0x2cfcA5785261fbC88EFFDd46fCFc04c22525F9e4",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xDf73fC454FA018051D4a1509e63D11530A59DE10",
"address": "0x145b7B6368Df63e7F3497b0A948B30fC1A4d5E55",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -253,7 +253,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x7c2C195CD6D34B8F845992d380aADB2730bB9C6F",
"address": "0x010e948B9B7D30771E23346C0B17a4D5Ff04e300",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -267,7 +267,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x8858eeB3DfffA017D4BCE9801D340D36Cf895CCf",
"address": "0x79094eDB848047e87a4B8a64ab5Ee2f527791bC0",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -281,7 +281,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x0078371BDeDE8aAc7DeBfFf451B74c5EDB385Af7",
"address": "0xEE0A69d0Bb1312685870Dd7E20AcAD66b6f6264F",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -295,7 +295,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xf4e77E5Da47AC3125140c470c71cBca77B5c638c",
"address": "0x631B367fBE1dbB934bC039aAA0C9eC2EE5943fd5",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -309,7 +309,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x3619DbE27d7c1e7E91aA738697Ae7Bc5FC3eACA5",
"address": "0xf55Af78B3f3059fACF166Aa338FFe059A14e75F6",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -323,7 +323,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x038B86d9d8FAFdd0a02ebd1A476432877b0107C8",
"address": "0xD5A0587aAEB195028909E98930B391dFB3f9F589",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -337,7 +337,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x1A1FEe7EeD918BD762173e4dc5EfDB8a78C924A8",
"address": "0xaD3AdbC18E4AD090034A6C74Eda61f4310dce313",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -351,7 +351,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x500D1d6A4c7D8Ae28240b47c8FCde034D827fD5e",
"address": "0x25a88BbA9c8D2a46e3Ff4bFe98712DF7A1044fB6",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -365,7 +365,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xc4905364b78a742ccce7B890A89514061E47068D",
"address": "0x16d1802cd7cfcb67955BBBa26bAae1cE559B5F5B",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -379,7 +379,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xD6C850aeBFDC46D7F4c207e445cC0d6B0919BDBe",
"address": "0xE58d8c88f5A670f16BE8F7864707170F43e943A6",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -393,7 +393,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x8B5B7a6055E54a36fF574bbE40cf2eA68d5554b3",
"address": "0xfdAF4f6e47e854c05bE158993d32872e784F0502",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -407,7 +407,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xEcc0a6dbC0bb4D51E4F84A315a9e5B0438cAD4f0",
"address": "0x92edC13A10036A3C50396f2B63148a3e9a8D589e",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -421,7 +421,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x20Ce94F404343aD2752A2D01b43fa407db9E0D00",
"address": "0xE5C277cDb7E10372918Ac54Ce54022910A24FE88",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -435,7 +435,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x1d80315fac6aBd3EfeEbE97dEc44461ba7556160",
"address": "0xF5742a599a0F4520089cbf2EBBa66Bb4F471B85F",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -449,7 +449,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x2D8553F9ddA85A9B3259F6Bf26911364B85556F5",
"address": "0x380EF388e13D8cAdeACef6eF682C7B7D85865076",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -463,7 +463,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x52d3b94181f8654db2530b0fEe1B19173f519C52",
"address": "0xC89577DED8441e52C17C13D527b85b225C5c8311",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -477,7 +477,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xd15468525c35BDBC1eD8F2e09A00F8a173437f2f",
"address": "0xD4b06774A717Ff5A7c20c8712e31c6BbfFcb1F01",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -491,7 +491,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x7e35Eaf7e8FBd7887ad538D4A38Df5BbD073814a",
"address": "0xbe66dC9DFEe580ED968403e35dF7b5159f873df8",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -505,7 +505,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x5bcb88A0d20426e451332eE6C4324b0e663c50E0",
"address": "0x93AfC6Df4bB8F62F2493B19e577f8382c0BA9EBC",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -519,7 +519,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x3521eF8AaB0323004A6dD8b03CE890F4Ea3A13f5",
"address": "0x75Ded61646B5945BdDd0CD9a9Db7c8288DA6F810",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -533,7 +533,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x53369fd4680FfE3DfF39Fc6DDa9CfbfD43daeA2E",
"address": "0xdE7c40e675bF1aA45c18cCbaEb9662B16b0Ddf7E",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -547,7 +547,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xB00cC45B4a7d3e1FEE684cFc4417998A1c183e6d",
"address": "0xEcb928A3c079a1696Aa5244779eEc3dE1717fACd",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -561,7 +561,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x58F132FBB86E21545A4Bace3C19f1C05d86d7A22",
"address": "0xDFbeeed692AA81E7f86E72F7ACbEA2A1C4d63544",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -574,7 +574,7 @@
"address": "0xe7536f450378748E1BD4645D3c77ec38e0F3ba28"
},
"localhost": {
"address": "0x2cfcA5785261fbC88EFFDd46fCFc04c22525F9e4"
"address": "0x987223924D2DD6c6efB601756850f3886ECbceF6"
},
"coverage": {
"address": "0x2cfcA5785261fbC88EFFDd46fCFc04c22525F9e4"
@ -590,7 +590,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xB660Fdd109a95718cB9d20E3A89EE6cE342aDcB6",
"address": "0xaca5aCeB6f44845d07Fd339a51F0bd52Bb3D8D1A",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -608,7 +608,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x830bceA96E56DBC1F8578f75fBaC0AF16B32A07d",
"address": "0x9bD0Bec44106D8Ea8fFb6296d7A84742a290E064",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -622,7 +622,7 @@
},
"AToken": {
"localhost": {
"address": "0xA0AB1cB92A4AF81f84dCd258155B5c25D247b54E",
"address": "0x00f126cCA2266bFb634Ed6DB17c4C74fb8cA5177",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"buidlerevm": {
@ -640,11 +640,11 @@
},
"MockAToken": {
"buidlerevm": {
"address": "0x3b050AFb4ac4ACE646b31fF3639C1CD43aC31460",
"address": "0x392E5355a0e88Bd394F717227c752670fb3a8020",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xa89E20284Bd638F31b0011D0fC754Fc9d2fa73e3",
"address": "0xbF538F34cb100bAeEE55aa1F036D33F03b03d900",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -658,7 +658,7 @@
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xf784709d2317D872237C4bC22f867d1BAe2913AB",
"address": "0xff1B1B810F5DCe853a9b1819DE220D532D1CFeF2",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -668,11 +668,11 @@
},
"MockStableDebtToken": {
"buidlerevm": {
"address": "0xEBAB67ee3ef604D5c250A53b4b8fcbBC6ec3007C",
"address": "0x3b050AFb4ac4ACE646b31fF3639C1CD43aC31460",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0xaA935993065F2dDB1d13623B1941C7AEE3A60F23",
"address": "0x7436d6adaA697413F00cb63E1A2A854bF2Aec5A1",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -682,11 +682,11 @@
},
"MockVariableDebtToken": {
"buidlerevm": {
"address": "0xBE36BE5680244Ae1A6F983E4A6f6E1c142cdAbe3",
"address": "0xEBAB67ee3ef604D5c250A53b4b8fcbBC6ec3007C",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"localhost": {
"address": "0x35A2624888e207e4B3434E9a9E250bF6Ee68FeA3",
"address": "0x2A7BE996B8801ED21f2f45148791D402811A2106",
"deployer": "0xc783df8a850f42e7F7e57013759C285caa701eB6"
},
"coverage": {
@ -702,7 +702,7 @@
"address": "0xBEF0d4b9c089a5883741fC14cbA352055f35DDA2"
},
"localhost": {
"address": "0xBEF0d4b9c089a5883741fC14cbA352055f35DDA2"
"address": "0x48FAde2E719B770E1783d03466dAEe98b5183538"
}
},
"MockFlashRepayAdapter": {

258
test/collateral-swap.spec.ts
View File

@ -1,258 +0,0 @@
import {makeSuite, TestEnv} from './helpers/make-suite';
import {MockSwapAdapter} from '../types/MockSwapAdapter';
import {getMockSwapAdapter} from '../helpers/contracts-helpers';
import {ProtocolErrors} from '../helpers/types';
import {ethers} from 'ethers';
import {APPROVAL_AMOUNT_LENDING_POOL} from '../helpers/constants';
import {getContractsData, getTxCostAndTimestamp} from './helpers/actions';
import {calcExpectedATokenBalance} from './helpers/utils/calculations';
import {waitForTx} from '../helpers/misc-utils';
import {advanceBlock, timeLatest} from '../helpers/misc-utils';
const {expect} = require('chai');
makeSuite('LendingPool SwapDeposit function', (testEnv: TestEnv) => {
let _mockSwapAdapter = {} as MockSwapAdapter;
const {
HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD,
NO_UNFREEZED_RESERVE,
NO_ACTIVE_RESERVE,
INVALID_EQUAL_ASSETS_TO_SWAP,
} = ProtocolErrors;
before(async () => {
_mockSwapAdapter = await getMockSwapAdapter();
});
it('Should not allow to swap if from equal to', async () => {
const {pool, weth} = testEnv;
await expect(
pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
weth.address,
'1'.toString(),
'0x10'
)
).to.be.revertedWith(INVALID_EQUAL_ASSETS_TO_SWAP);
});
it('Should not allow to swap if from or to reserves are not active', async () => {
const {pool, weth, dai, configurator} = testEnv;
await configurator.deactivateReserve(weth.address);
await expect(
pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
'1'.toString(),
'0x10'
)
).to.be.revertedWith(NO_ACTIVE_RESERVE);
await configurator.activateReserve(weth.address);
await configurator.deactivateReserve(dai.address);
await expect(
pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
'1'.toString(),
'0x10'
)
).to.be.revertedWith(NO_ACTIVE_RESERVE);
//cleanup state
await configurator.activateReserve(dai.address);
});
it('Deposits WETH into the reserve', async () => {
const {pool, weth, users} = testEnv;
const amountToDeposit = ethers.utils.parseEther('1');
for (const signer of [weth.signer, users[2].signer]) {
const connectedWETH = weth.connect(signer);
await connectedWETH.mint(amountToDeposit);
await connectedWETH.approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
await pool
.connect(signer)
.deposit(weth.address, amountToDeposit, await signer.getAddress(), '0');
}
});
it('User tries to swap more then he can, revert expected', async () => {
const {pool, weth, dai} = testEnv;
await expect(
pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
ethers.utils.parseEther('1.1'),
'0x10'
)
).to.be.revertedWith('55');
});
it('User tries to swap more then available on the reserve', async () => {
const {pool, weth, dai, users, aEth, deployer} = testEnv;
await pool.borrow(weth.address, ethers.utils.parseEther('0.1'), 1, 0, deployer.address);
await pool.connect(users[2].signer).withdraw(weth.address, ethers.utils.parseEther('1'));
await expect(
pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
ethers.utils.parseEther('1'),
'0x10'
)
).to.be.revertedWith('55');
});
it('User tries to swap correct amount', async () => {
const {pool, weth, dai, aEth, aDai, helpersContract} = testEnv;
const userAddress = await pool.signer.getAddress();
const amountToSwap = ethers.utils.parseEther('0.25');
const amountToReturn = ethers.utils.parseEther('0.5');
await _mockSwapAdapter.setAmountToReturn(amountToReturn);
const {
reserveData: wethReserveDataBefore,
userData: wethUserDataBefore,
} = await getContractsData(weth.address, userAddress, testEnv);
const {reserveData: daiReserveDataBefore, userData: daiUserDataBefore} = await getContractsData(
dai.address,
userAddress,
testEnv
);
const reserveBalanceWETHBefore = await weth.balanceOf(aEth.address);
const reserveBalanceDAIBefore = await dai.balanceOf(aDai.address);
const txReceipt = await waitForTx(
await pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
amountToSwap,
'0x10'
)
);
const {txTimestamp} = await getTxCostAndTimestamp(txReceipt);
const userATokenBalanceWETHAfter = await aEth.balanceOf(userAddress);
const userATokenBalanceDAIAfter = await aDai.balanceOf(userAddress);
const reserveBalanceWETHAfter = await weth.balanceOf(aEth.address);
const reserveBalanceDAIAfter = await dai.balanceOf(aDai.address);
expect(userATokenBalanceWETHAfter.toString()).to.be.equal(
calcExpectedATokenBalance(wethReserveDataBefore, wethUserDataBefore, txTimestamp)
.minus(amountToSwap.toString())
.toString(),
'was burned incorrect amount of user funds'
);
expect(userATokenBalanceDAIAfter.toString()).to.be.equal(
calcExpectedATokenBalance(daiReserveDataBefore, daiUserDataBefore, txTimestamp)
.plus(amountToReturn.toString())
.toString(),
'was minted incorrect amount of user funds'
);
expect(reserveBalanceWETHAfter.toString()).to.be.equal(
reserveBalanceWETHBefore.sub(amountToSwap).toString(),
'was sent incorrect amount if reserve funds'
);
expect(reserveBalanceDAIAfter.toString()).to.be.equal(
reserveBalanceDAIBefore.add(amountToReturn).toString(),
'was received incorrect amount if reserve funds'
);
expect(
(await helpersContract.getUserReserveData(dai.address, userAddress)).usageAsCollateralEnabled
).to.be.equal(true, 'usage as collateral was not enabled on destination reserve for the user');
});
it('User tries to drop HF below one', async () => {
const {pool, weth, dai, deployer} = testEnv;
const amountToSwap = ethers.utils.parseEther('0.3');
const amountToReturn = ethers.utils.parseEther('0.5');
await _mockSwapAdapter.setAmountToReturn(amountToReturn);
await pool.borrow(weth.address, ethers.utils.parseEther('0.3'), 1, 0, deployer.address);
await expect(
pool.swapLiquidity(_mockSwapAdapter.address, weth.address, dai.address, amountToSwap, '0x10')
).to.be.revertedWith(HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD);
});
it('Should set usage as collateral to false if no leftovers after swap', async () => {
const {pool, weth, dai, users} = testEnv;
const userAddress = await pool.signer.getAddress();
// add more liquidity to allow user 0 to swap everything he has
await weth.connect(users[2].signer).mint(ethers.utils.parseEther('1'));
await pool
.connect(users[2].signer)
.deposit(weth.address, ethers.utils.parseEther('1'), users[2].address, '0');
// cleanup borrowings, to be abe to swap whole weth
const amountToRepay = ethers.utils.parseEther('0.5');
await weth.mint(amountToRepay);
await pool.repay(weth.address, amountToRepay, '1', userAddress);
const txTimestamp = (await timeLatest()).plus(100);
const {
reserveData: wethReserveDataBefore,
userData: wethUserDataBefore,
} = await getContractsData(weth.address, userAddress, testEnv);
const amountToSwap = calcExpectedATokenBalance(
wethReserveDataBefore,
wethUserDataBefore,
txTimestamp.plus('1')
);
await advanceBlock(txTimestamp.toNumber());
await pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
amountToSwap.toString(),
'0x10'
);
const {userData: wethUserDataAfter} = await getContractsData(
weth.address,
userAddress,
testEnv
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.equal(
false,
'usageAsCollateralEnabled are not set to false'
);
});
it('Should not allow to swap if to reserve are freezed', async () => {
const {pool, weth, dai, configurator} = testEnv;
await configurator.freezeReserve(dai.address);
await expect(
pool.swapLiquidity(
_mockSwapAdapter.address,
weth.address,
dai.address,
'1'.toString(),
'0x10'
)
).to.be.revertedWith(NO_UNFREEZED_RESERVE);
//cleanup state
await configurator.unfreezeReserve(dai.address);
});
});

932
test/flash-liquidation-with-collateral.spec.ts
View File

@ -1,932 +0,0 @@
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 {timeLatest, BRE, increaseTime, waitForTx} from '../helpers/misc-utils';
import {ProtocolErrors} from '../helpers/types';
import {convertToCurrencyDecimals} from '../helpers/contracts-helpers';
import {expectRepayWithCollateralEvent} from './repay-with-collateral.spec';
const {expect} = require('chai');
const {parseUnits, parseEther} = ethers.utils;
makeSuite('LendingPool. repayWithCollateral() with liquidator', (testEnv: TestEnv) => {
const {INVALID_HF, COLLATERAL_CANNOT_BE_LIQUIDATED, IS_PAUSED} = ProtocolErrors;
it('User 1 provides some liquidity for others to borrow', async () => {
const {pool, weth, dai, usdc, deployer} = testEnv;
await weth.mint(parseEther('200'));
await weth.approve(pool.address, parseEther('200'));
await pool.deposit(weth.address, parseEther('200'), deployer.address, 0);
await dai.mint(parseEther('20000'));
await dai.approve(pool.address, parseEther('20000'));
await pool.deposit(dai.address, parseEther('20000'), deployer.address, 0);
await usdc.mint(parseEther('20000'));
await usdc.approve(pool.address, parseEther('20000'));
await pool.deposit(usdc.address, parseEther('20000'), deployer.address, 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, helpersContract} = 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, user.address, '0');
const usdcPrice = await oracle.getAssetPrice(usdc.address);
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 2, 0, user.address);
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 1, 0, user.address);
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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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.principalStableDebt,
usdcUserDataBefore.stableBorrowRate,
usdcUserDataBefore.stableRateLastUpdated,
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, user.address, '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, user.address);
});
it('User 5 liquidates half the USDC loan of User 3 by swapping his WETH collateral', async () => {
const {pool, weth, usdc, users, mockSwapAdapter, oracle, helpersContract} = 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.totalVariableDebt.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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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.almostEqual(
new BigNumber(wethUserDataBefore.currentATokenBalance).minus(
expectedCollateralLiquidated.toString()
),
'INVALID_COLLATERAL_POSITION'
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.true;
// 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('40');
await oracle.setAssetPrice(usdc.address, usdcPrice);
});
it('User 5 liquidates all the USDC loan of User 3 by swapping his WETH collateral', async () => {
const {pool, weth, usdc, users, mockSwapAdapter, oracle, helpersContract} = 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(1.35).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.totalVariableDebt.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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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('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('2');
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, user.address, '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(0.9)
.toFixed(0)
);
await pool.connect(user.signer).borrow(dai.address, amountDAIToBorrow, 2, 0, user.address);
});
it('It is not possible to do reentrancy on repayWithCollateral()', 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 {reserveData: daiReserveDataBefore} = await getContractsData(
dai.address,
user.address,
testEnv
);
const amountToRepay = daiReserveDataBefore.totalVariableDebt.toString();
await waitForTx(await mockSwapAdapter.setTryReentrancy(true));
await mockSwapAdapter.setAmountToReturn(amountToRepay);
await expect(
pool
.connect(liquidator.signer)
.repayWithCollateral(
weth.address,
dai.address,
user.address,
amountToRepay,
mockSwapAdapter.address,
'0x'
)
).to.be.revertedWith('53');
// Resets DAI Price
await oracle.setAssetPrice(dai.address, daiPrice);
// Resets mock
await waitForTx(await mockSwapAdapter.setTryReentrancy(false));
});
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.totalVariableDebt.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('38');
});
it('User 5 liquidates User 2 DAI Variable loan using his WETH collateral, half the amount', async () => {
const {pool, weth, dai, users, mockSwapAdapter, oracle, helpersContract} = 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.totalVariableDebt
.multipliedBy(0.6)
.toFixed(0)
.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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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()
)
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.true;
// 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, helpersContract} = 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
);
await increaseTime(1000);
// Repay the remaining DAI
const amountToRepay = daiReserveDataBefore.totalVariableDebt.toString();
await mockSwapAdapter.setAmountToReturn(amountToRepay);
const receipt = await waitForTx(
await pool
.connect(user.signer)
.repayWithCollateral(
weth.address,
dai.address,
user.address,
amountToRepay,
mockSwapAdapter.address,
'0x'
)
);
const repayWithCollateralTimestamp = (await BRE.ethers.provider.getBlock(receipt.blockNumber))
.timestamp;
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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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(
new BigNumber(wethUserDataBefore.currentATokenBalance).minus(
expectedCollateralLiquidated.toString()
)
).to.be.bignumber.equal(wethUserDataAfter.currentATokenBalance);
});
it('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, usdc, users, mockSwapAdapter, oracle, helpersContract} = testEnv;
const user = users[3];
const liquidator = users[5];
const amountToDepositWeth = parseEther('0.1');
const amountToDepositDAI = parseEther('500');
const amountToBorrowVariable = parseUnits('80', '6');
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, user.address, '0');
await pool.connect(user.signer).deposit(dai.address, amountToDepositDAI, user.address, '0');
await pool
.connect(user.signer)
.borrow(usdc.address, amountToBorrowVariable, 2, 0, user.address);
const amountToRepay = amountToBorrowVariable;
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
const daiPrice = await oracle.getAssetPrice(dai.address);
await oracle.setAssetPrice(
dai.address,
new BigNumber(daiPrice.toString()).multipliedBy(0.1).toFixed(0)
);
const userGlobalDataPrior = await pool.getUserAccountData(user.address);
expect(userGlobalDataPrior.healthFactor.toString()).to.be.bignumber.lt(oneEther, INVALID_HF);
// Execute liquidation
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 collateralConfig = await helpersContract.getReserveConfigurationData(weth.address);
const collateralDecimals = collateralConfig.decimals.toString();
const principalDecimals = (
await helpersContract.getReserveConfigurationData(usdc.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(
usdcReserveDataBefore,
usdcUserDataBefore,
new BigNumber(repayWithCollateralTimestamp)
).minus(usdcUserDataBefore.currentVariableDebt);
expect(usdcUserDataAfter.currentVariableDebt).to.be.bignumber.almostEqual(
new BigNumber(usdcUserDataBefore.currentVariableDebt)
.minus(expectedDebtCovered.toString())
.plus(expectedVariableDebtIncrease),
'INVALID_VARIABLE_DEBT_POSITION'
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.false;
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.equal(0);
// Resets DAI Price
await oracle.setAssetPrice(dai.address, daiPrice);
});
it('User 4 deposits WETH, LEND and DAI, then borrows USDC at Variable, then disables WETH as collateral', async () => {
const {pool, weth, dai, usdc, users} = testEnv;
const user = users[4];
const amountWETHToDeposit = parseEther('10');
const amountDAIToDeposit = parseEther('100');
const amountToBorrow = parseUnits('75', 6);
await weth.connect(user.signer).mint(amountWETHToDeposit);
await weth.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
await pool.connect(user.signer).deposit(weth.address, amountWETHToDeposit, user.address, '0');
await dai.connect(user.signer).mint(amountDAIToDeposit);
await dai.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
await pool.connect(user.signer).deposit(dai.address, amountDAIToDeposit, user.address, '0');
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 2, 0, user.address);
});
it('Liquidator tries to liquidate User 5 USDC loan by swapping his WETH collateral, should revert due WETH collateral disabled', async () => {
const {pool, weth, dai, usdc, users, mockSwapAdapter, oracle} = testEnv;
const user = users[4];
const liquidator = users[5];
const amountToRepay = parseUnits('65', 6);
// User 5 Disable WETH as collateral
await pool.connect(user.signer).setUserUseReserveAsCollateral(weth.address, false);
const {userData: wethUserDataBefore} = await getContractsData(
weth.address,
user.address,
testEnv
);
const {
reserveData: usdcReserveDataBefore,
userData: usdcUserDataBefore,
} = await getContractsData(usdc.address, user.address, testEnv);
expect(wethUserDataBefore.usageAsCollateralEnabled).to.be.false;
//drop the price to set the HF below 1
const daiPrice = await oracle.getAssetPrice(dai.address);
await oracle.setAssetPrice(
dai.address,
new BigNumber(daiPrice.toString()).multipliedBy(0.9).toFixed(0)
);
// Liquidator should NOT be able to liquidate himself with WETH, even if is disabled
await mockSwapAdapter.setAmountToReturn(amountToRepay);
await expect(
pool
.connect(liquidator.signer)
.repayWithCollateral(
weth.address,
usdc.address,
user.address,
amountToRepay,
mockSwapAdapter.address,
'0x'
)
).to.be.revertedWith(COLLATERAL_CANNOT_BE_LIQUIDATED);
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 expectedVariableDebtIncrease = calcExpectedVariableDebtTokenBalance(
usdcReserveDataBefore,
usdcUserDataBefore,
new BigNumber(repayWithCollateralTimestamp)
).minus(usdcUserDataBefore.currentVariableDebt);
expect(usdcUserDataAfter.currentVariableDebt).to.be.bignumber.almostEqual(
new BigNumber(usdcUserDataBefore.currentVariableDebt)
.plus(expectedVariableDebtIncrease)
.toString(),
'INVALID_DEBT_POSITION'
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.false;
});
});

42
test/pausable-functions.spec.ts
View File

@ -155,22 +155,6 @@ makeSuite('Pausable Pool', (testEnv: TestEnv) => {
await configurator.setPoolPause(false);
});
it('Swap liquidity', async () => {
const {pool, dai, weth, users, configurator} = testEnv;
const user = users[1];
// Pause the pool
await configurator.setPoolPause(true);
// Try to execute liquidation
await expect(
pool.connect(user.signer).swapLiquidity(user.address, dai.address, weth.address, '1', '0x')
).revertedWith(IS_PAUSED);
// Unpause the pool
await configurator.setPoolPause(false);
});
it('Repay', async () => {
const {pool, dai, users, configurator} = testEnv;
@ -187,32 +171,6 @@ makeSuite('Pausable Pool', (testEnv: TestEnv) => {
await configurator.setPoolPause(false);
});
it('Repay with collateral', async () => {
const {pool, weth, dai, usdc, users, mockSwapAdapter, oracle, configurator} = testEnv;
const user = users[6];
const liquidator = users[5];
// Pause the pool
await configurator.setPoolPause(true);
// Try to execute liquidation
await expect(
pool
.connect(liquidator.signer)
.repayWithCollateral(
weth.address,
usdc.address,
user.address,
'1',
mockSwapAdapter.address,
'0x'
)
).revertedWith(IS_PAUSED);
// Unpause the pool
await configurator.setPoolPause(false);
});
it('Flash loan', async () => {
const {dai, pool, weth, users, configurator} = testEnv;

682
test/repay-with-collateral.spec.ts
View File

@ -1,682 +0,0 @@
import {TestEnv, makeSuite} from './helpers/make-suite';
import {APPROVAL_AMOUNT_LENDING_POOL} 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 {timeLatest, waitForTx} from '../helpers/misc-utils';
import {ProtocolErrors, tEthereumAddress} from '../helpers/types';
const {expect} = require('chai');
const {parseUnits, parseEther} = ethers.utils;
export const expectRepayWithCollateralEvent = (
events: ethers.Event[],
pool: tEthereumAddress,
collateral: tEthereumAddress,
borrowing: tEthereumAddress,
user: tEthereumAddress
) => {
if (!events || events.length < 16) {
expect(false, 'INVALID_EVENTS_LENGTH_ON_REPAY_COLLATERAL');
}
const repayWithCollateralEvent = events[15];
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()', (testEnv: TestEnv) => {
const {IS_PAUSED} = ProtocolErrors;
it("It's not possible to repayWithCollateral() on a non-active collateral or a non active principal", async () => {
const {configurator, weth, pool, users, dai, mockSwapAdapter} = testEnv;
const user = users[1];
await configurator.deactivateReserve(weth.address);
await expect(
pool
.connect(user.signer)
.repayWithCollateral(
weth.address,
dai.address,
user.address,
parseEther('100'),
mockSwapAdapter.address,
'0x'
)
).to.be.revertedWith('2');
await configurator.activateReserve(weth.address);
await configurator.deactivateReserve(dai.address);
await expect(
pool
.connect(user.signer)
.repayWithCollateral(
weth.address,
dai.address,
user.address,
parseEther('100'),
mockSwapAdapter.address,
'0x'
)
).to.be.revertedWith('2');
await configurator.activateReserve(dai.address);
});
it('User 1 provides some liquidity for others to borrow', async () => {
const {pool, weth, dai, usdc, deployer} = testEnv;
await weth.mint(parseEther('200'));
await weth.approve(pool.address, parseEther('200'));
await pool.deposit(weth.address, parseEther('200'), deployer.address, 0);
await dai.mint(parseEther('20000'));
await dai.approve(pool.address, parseEther('20000'));
await pool.deposit(dai.address, parseEther('20000'), deployer.address, 0);
await usdc.mint(parseEther('20000'));
await usdc.approve(pool.address, parseEther('20000'));
await pool.deposit(usdc.address, parseEther('20000'), deployer.address, 0);
});
it('User 2 deposit WETH and borrows DAI at Variable', async () => {
const {pool, weth, dai, users} = testEnv;
const user = users[1];
const amountToDeposit = ethers.utils.parseEther('1');
const amountToBorrow = ethers.utils.parseEther('20');
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, user.address, '0');
await pool.connect(user.signer).borrow(dai.address, amountToBorrow, 2, 0, user.address);
});
it('It is not possible to do reentrancy on repayWithCollateral()', async () => {
const {pool, weth, dai, users, mockSwapAdapter, oracle} = testEnv;
const user = users[1];
const amountToRepay = parseEther('10');
await waitForTx(await mockSwapAdapter.setTryReentrancy(true));
await mockSwapAdapter.setAmountToReturn(amountToRepay);
await expect(
pool
.connect(user.signer)
.repayWithCollateral(
weth.address,
dai.address,
user.address,
amountToRepay,
mockSwapAdapter.address,
'0x'
)
).to.be.revertedWith('53');
});
it('User 2 tries to repay his DAI Variable loan using his WETH collateral. First half the amount, after that, the rest', async () => {
const {pool, weth, dai, users, mockSwapAdapter, oracle, helpersContract} = testEnv;
const user = users[1];
const amountToRepay = parseEther('10');
await waitForTx(await mockSwapAdapter.setTryReentrancy(false));
const {userData: wethUserDataBefore} = await getContractsData(
weth.address,
user.address,
testEnv
);
const {reserveData: daiReserveDataBefore, userData: daiUserDataBefore} = await getContractsData(
dai.address,
user.address,
testEnv
);
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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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()
)
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.true;
});
it('User 3 deposits WETH and borrows USDC at Variable', async () => {
const {pool, weth, usdc, users} = testEnv;
const user = users[2];
const amountToDeposit = parseEther('10');
const amountToBorrow = parseUnits('40', 6);
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, user.address, '0');
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 2, 0, user.address);
});
it('User 3 repays completely his USDC loan by swapping his WETH collateral', async () => {
const {pool, weth, usdc, users, mockSwapAdapter, oracle, helpersContract} = testEnv;
const user = users[2];
const amountToRepay = parseUnits('10', 6);
const {userData: wethUserDataBefore} = await getContractsData(
weth.address,
user.address,
testEnv
);
const {
reserveData: usdcReserveDataBefore,
userData: usdcUserDataBefore,
} = await getContractsData(usdc.address, user.address, testEnv);
await mockSwapAdapter.setAmountToReturn(amountToRepay);
await waitForTx(
await pool
.connect(user.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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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'
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.true;
});
it('Revert expected. User 3 tries to repay with his collateral a currency he havent borrow', async () => {
const {pool, weth, dai, users, mockSwapAdapter} = testEnv;
const user = users[2];
const amountToRepay = parseUnits('10', 6);
await expect(
pool
.connect(user.signer)
.repayWithCollateral(
weth.address,
dai.address,
user.address,
amountToRepay,
mockSwapAdapter.address,
'0x'
)
).to.be.revertedWith('40');
});
it('User 3 tries to repay with his collateral all his variable debt and part of the stable', async () => {
const {pool, weth, usdc, users, mockSwapAdapter, oracle, helpersContract} = testEnv;
const user = users[2];
const amountToDeposit = parseEther('20');
const amountToBorrowStable = parseUnits('40', 6);
const amountToBorrowVariable = parseUnits('40', 6);
await weth.connect(user.signer).mint(amountToDeposit);
await pool.connect(user.signer).deposit(weth.address, amountToDeposit, user.address, '0');
await pool
.connect(user.signer)
.borrow(usdc.address, amountToBorrowVariable, 2, 0, user.address);
await pool.connect(user.signer).borrow(usdc.address, amountToBorrowStable, 1, 0, user.address);
const amountToRepay = parseUnits('80', 6);
const {userData: wethUserDataBefore} = await getContractsData(
weth.address,
user.address,
testEnv
);
const {
reserveData: usdcReserveDataBefore,
userData: usdcUserDataBefore,
} = await getContractsData(usdc.address, user.address, testEnv);
await mockSwapAdapter.setAmountToReturn(amountToRepay);
const txReceipt = await waitForTx(
await pool
.connect(user.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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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.principalStableDebt,
usdcUserDataBefore.stableBorrowRate,
usdcUserDataBefore.stableRateLastUpdated,
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
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.true;
});
it('User 4 tries to repay 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, helpersContract} = testEnv;
const user = users[3];
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, user.address, '0');
await pool.connect(user.signer).deposit(dai.address, amountToDepositDAI, user.address, '0');
await pool.connect(user.signer).borrow(dai.address, amountToBorrowVariable, 2, 0, user.address);
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
);
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 collateralConfig = await helpersContract.getReserveConfigurationData(weth.address);
const collateralDecimals = collateralConfig.decimals.toString();
const collateralLiquidationBonus = collateralConfig.liquidationBonus.toString();
const principalDecimals = (
await helpersContract.getReserveConfigurationData(dai.address)
).decimals.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.almostEqual(
new BigNumber(daiUserDataBefore.currentVariableDebt)
.minus(expectedDebtCovered.toString())
.plus(expectedVariableDebtIncrease),
'INVALID_VARIABLE_DEBT_POSITION'
);
expect(wethUserDataAfter.currentATokenBalance).to.be.bignumber.almostEqual(0);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.false;
});
it('User 5 deposits WETH and DAI, then borrows USDC at Variable, then disables WETH as collateral', async () => {
const {pool, weth, dai, usdc, users} = testEnv;
const user = users[4];
const amountWETHToDeposit = parseEther('10');
const amountDAIToDeposit = parseEther('120');
const amountToBorrow = parseUnits('65', 6);
await weth.connect(user.signer).mint(amountWETHToDeposit);
await weth.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
await pool.connect(user.signer).deposit(weth.address, amountWETHToDeposit, user.address, '0');
await dai.connect(user.signer).mint(amountDAIToDeposit);
await dai.connect(user.signer).approve(pool.address, APPROVAL_AMOUNT_LENDING_POOL);
await pool.connect(user.signer).deposit(dai.address, amountDAIToDeposit, user.address, '0');
await pool.connect(user.signer).borrow(usdc.address, amountToBorrow, 2, 0, user.address);
});
it('User 5 tries to repay his USDC loan by swapping his WETH collateral, should not revert even with WETH collateral disabled', async () => {
const {pool, weth, usdc, users, mockSwapAdapter, oracle, helpersContract} = testEnv;
const user = users[4];
const amountToRepay = parseUnits('65', 6);
// Disable WETH as collateral
await pool.connect(user.signer).setUserUseReserveAsCollateral(weth.address, false);
const {userData: wethUserDataBefore} = await getContractsData(
weth.address,
user.address,
testEnv
);
const {
reserveData: usdcReserveDataBefore,
userData: usdcUserDataBefore,
} = await getContractsData(usdc.address, user.address, testEnv);
expect(wethUserDataBefore.usageAsCollateralEnabled).to.be.false;
// User 5 should be able to liquidate himself with WETH, even if is disabled
await mockSwapAdapter.setAmountToReturn(amountToRepay);
expect(
await pool
.connect(user.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 helpersContract.getReserveConfigurationData(weth.address)
).decimals.toString();
const principalDecimals = (
await helpersContract.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'
);
expect(wethUserDataAfter.usageAsCollateralEnabled).to.be.false;
});
});