From 5fa09f5a7cced188fa6cbc459b6c6ec3ecb34af2 Mon Sep 17 00:00:00 2001
From: Lasse Herskind <16536249+LHerskind@users.noreply.github.com>
Date: Fri, 20 Aug 2021 17:24:00 +0200
Subject: [PATCH] feat: Add missing cases for `LiqudationLogic`

---
 test-suites/liquidation-edge.spec.ts | 77 ++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 test-suites/liquidation-edge.spec.ts

diff --git a/test-suites/liquidation-edge.spec.ts b/test-suites/liquidation-edge.spec.ts
new file mode 100644
index 000000000..5f34332ce
--- /dev/null
+++ b/test-suites/liquidation-edge.spec.ts
@@ -0,0 +1,77 @@
+import { APPROVAL_AMOUNT_POOL, MAX_UINT_AMOUNT, RAY, ZERO_ADDRESS } from '../helpers/constants';
+import { convertToCurrencyDecimals } from '../helpers/contracts-helpers';
+import { expect } from 'chai';
+import { ethers } from 'ethers';
+import { RateMode, ProtocolErrors } from '../helpers/types';
+import { makeSuite, TestEnv } from './helpers/make-suite';
+import { DRE, evmRevert, evmSnapshot } from '../helpers/misc-utils';
+import { formatUnits, parseEther, parseUnits } from 'ethers/lib/utils';
+import { deposit } from './helpers/actions';
+import BigNumber from 'bignumber.js';
+
+makeSuite('Validation-logic: reverting edge cases', (testEnv: TestEnv) => {
+  const {
+    VL_NO_ACTIVE_RESERVE,
+    VL_RESERVE_FROZEN,
+    VL_INVALID_AMOUNT,
+    VL_BORROWING_NOT_ENABLED,
+    VL_STABLE_BORROWING_NOT_ENABLED,
+    VL_COLLATERAL_SAME_AS_BORROWING_CURRENCY,
+    VL_AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE,
+    VL_NO_DEBT_OF_SELECTED_TYPE,
+    VL_SAME_BLOCK_BORROW_REPAY,
+    VL_HEALTH_FACTOR_NOT_BELOW_THRESHOLD,
+    VL_INVALID_INTEREST_RATE_MODE_SELECTED,
+    VL_UNDERLYING_BALANCE_NOT_GREATER_THAN_0,
+    VL_INCONSISTENT_FLASHLOAN_PARAMS,
+    VL_HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD,
+  } = ProtocolErrors;
+
+  let snap: string;
+
+  beforeEach(async () => {
+    snap = await evmSnapshot();
+  });
+  afterEach(async () => {
+    await evmRevert(snap);
+  });
+
+  it('executeLiquidationCall() 0 < vars.userVariableDebt < vars.actualDebtToLiquidate', async () => {
+    const { pool, users, dai, weth, oracle } = testEnv;
+
+    const depositor = users[0];
+    const borrower = users[1];
+
+    // Deposit 1000 dai
+    await dai.connect(depositor.signer).mint(parseUnits('1000000', 18));
+    await dai.connect(depositor.signer).approve(pool.address, MAX_UINT_AMOUNT);
+    await pool
+      .connect(depositor.signer)
+      .deposit(dai.address, parseUnits('10000', 18), depositor.address, 0);
+
+    // Deposit eth, borrow dai
+    await weth.connect(borrower.signer).mint(parseUnits('1', 18));
+    await weth.connect(borrower.signer).approve(pool.address, MAX_UINT_AMOUNT);
+    await pool
+      .connect(borrower.signer)
+      .deposit(weth.address, parseUnits('1', 18), borrower.address, 0);
+
+    await oracle.setAssetPrice(dai.address, parseUnits('0.001', 18));
+
+    // Borrow 500 dai stable
+    await pool
+      .connect(borrower.signer)
+      .borrow(dai.address, parseUnits('500', 18), RateMode.Stable, 0, borrower.address);
+
+    // Borrow 200 dai variable
+    await pool
+      .connect(borrower.signer)
+      .borrow(dai.address, parseUnits('200', 18), RateMode.Variable, 0, borrower.address);
+
+    await oracle.setAssetPrice(dai.address, parseUnits('0.002', 18));
+
+    await pool
+      .connect(depositor.signer)
+      .liquidationCall(weth.address, dai.address, borrower.address, MAX_UINT_AMOUNT, false);
+  });
+});