Key global and reserve settings such as borrowFeeRate, Reserve.liquidateMortgageRate and Reserve.initialMortgageRate not checked and reverted.

MaximizedBorrowersLiquidatable.t.sol

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;

import "./JUSDBankInit3.t.sol";
import "../../src/utils/JUSDError.sol";
import {DecimalMath} from "../../src/lib/DecimalMath.sol";

/**
 * @notice Key global and reserve settings such as borrowFeeRate, Reserve.liquidateMortgageRate and Reserve.initialMortgageRate not checked and reverted.
 * This tests when borrowFeeRate is set high and when liquidateMortageRate is eqaul or too close to initialMortgageRate,
 * maximized borrowers may become almost instanly liquidated after borrow.
 * @dev Global and token reserve settings in JUSDBankInit3.t.sol:
 * borrowFeeRate= 1e17;
 * mockToken1 reserve:
 * initialMortgageRate= 8e17;
 * liquidateMortgageRate= 8e17;
 */
contract MaximizedBorrowersLiquidatableTest is JUSDBankInitTest {
    using DecimalMath for uint256;

    function test_maximizedBorrowers_liquidatable() public {
        mockToken1.transfer(alice, 10 * ONE);
        vm.startPrank(alice);
        mockToken1.approve(address(jusdBank), 10 * ONE);
        jusdBank.deposit(alice, address(mockToken1), 10 * ONE, alice); //Alice deposited 10 weth
        vm.warp(1000);
        console.log("TRate", jusdBank.getTRate());
        //log: 1000003167808219178
        uint256 maxBorrowAmount = jusdBank.getDepositMaxMintAmount(alice);
        console.log("Max Borrow Amount", maxBorrowAmount);
        //log: 8000000000
        jusdBank.borrow(maxBorrowAmount, alice, false); //Alice borrowed 8000 JUSD
        assertEq(jusdBank.isAccountSafe(alice), true); ////Alice's account is safe
        uint256 aliceBorrow = jusdBank.getBorrowBalance(alice);
        console.log("Borrow Balance", aliceBorrow);
        //log: 8000000000
        vm.stopPrank();
        vm.warp(1050); // 1050 seconds passed
        console.log("TRate", jusdBank.getTRate());
        //log: 1000003326357179096
        aliceBorrow = jusdBank.getBorrowBalance(alice);
        console.log("Borrow Balance", aliceBorrow);
        //log: 8000001268
        assertEq(jusdBank.isAccountSafe(alice), false); ////Alice's account is not safe and can be liquidated instantly!
        uint256 usdcAmount = jojoOracle1.getAssetPrice().decimalMul(10 * ONE);
        console.log(usdcAmount - maxBorrowAmount);
        //log: 2000000000 (2000 usdc)
        assertEq(usdcAmount - maxBorrowAmount > 0, true);
        ////Alice lost a value of 2000 usdc due to liquidation, even though she only borrowed for 1050 seconds!
    }
}