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test(pool-monitor): add liquidity drop test
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@alexandr-masl
alexandr-masl committed Sep 15, 2024
1 parent e032f0c commit 1df5a77
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Showing 2 changed files with 168 additions and 18 deletions.
2 changes: 0 additions & 2 deletions packages/contracts/src/dollar/monitors/PoolLiquidityMonitor.sol
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Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../facets/UbiquityPoolFacet.sol";
import {Modifiers} from "../libraries/LibAppStorage.sol";
import {SafeMath} from "@openzeppelin/contracts/utils/math/SafeMath.sol";
import {DEFAULT_ADMIN_ROLE} from "../libraries/Constants.sol";
Expand All @@ -11,7 +10,6 @@ import "forge-std/console.sol";
contract PoolLiquidityMonitor is Modifiers {
using SafeMath for uint256;

UbiquityPoolFacet public ubiquityPoolFacet;
address public defenderRelayer;
uint256 public liquidityVertex;
bool public monitorPaused;
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184 changes: 168 additions & 16 deletions packages/contracts/test/dollar/monitors/PoolLiquidityMonitorTest.t.sol
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Expand Up @@ -6,17 +6,152 @@ import "../../../src/dollar/monitors/PoolLiquidityMonitor.sol";
import "../../helpers/LocalTestHelper.sol";
import {DiamondTestSetup} from "../../../test/diamond/DiamondTestSetup.sol";
import {DEFAULT_ADMIN_ROLE} from "../../../src/dollar/libraries/Constants.sol";
import {MockChainLinkFeed} from "../../../src/dollar/mocks/MockChainLinkFeed.sol";
import {MockERC20} from "../../../src/dollar/mocks/MockERC20.sol";
import {MockCurveStableSwapNG} from "../../../src/dollar/mocks/MockCurveStableSwapNG.sol";
import {MockCurveTwocryptoOptimized} from "../../../src/dollar/mocks/MockCurveTwocryptoOptimized.sol";

contract PoolLiquidityMonitorTest is DiamondTestSetup {
PoolLiquidityMonitor monitor;
address defenderRelayer = address(0x456);
address unauthorized = address(0x123);

MockERC20 collateralToken;
MockERC20 stableToken;
MockERC20 wethToken;

// mock three ChainLink price feeds, one for each token
MockChainLinkFeed collateralTokenPriceFeed;
MockChainLinkFeed ethUsdPriceFeed;
MockChainLinkFeed stableUsdPriceFeed;

// mock two curve pools Stablecoin/Dollar and Governance/WETH
MockCurveStableSwapNG curveDollarPlainPool;
MockCurveTwocryptoOptimized curveGovernanceEthPool;

address user = address(1);

function setUp() public override {
super.setUp();

vm.prank(admin);
vm.startPrank(admin);

collateralToken = new MockERC20("COLLATERAL", "CLT", 18);
wethToken = new MockERC20("WETH", "WETH", 18);
stableToken = new MockERC20("STABLE", "STABLE", 18);

collateralTokenPriceFeed = new MockChainLinkFeed();
ethUsdPriceFeed = new MockChainLinkFeed();
stableUsdPriceFeed = new MockChainLinkFeed();

curveDollarPlainPool = new MockCurveStableSwapNG(
address(stableToken),
address(dollarToken)
);

curveGovernanceEthPool = new MockCurveTwocryptoOptimized(
address(governanceToken),
address(wethToken)
);

// add collateral token to the pool
uint256 poolCeiling = 50_000e18; // max 50_000 of collateral tokens is allowed
ubiquityPoolFacet.addCollateralToken(
address(collateralToken),
address(collateralTokenPriceFeed),
poolCeiling
);

// set collateral price initial feed mock params
collateralTokenPriceFeed.updateMockParams(
1, // round id
100_000_000, // answer, 100_000_000 = $1.00 (chainlink 8 decimals answer is converted to 6 decimals pool price)
block.timestamp, // started at
block.timestamp, // updated at
1 // answered in round
);

// set ETH/USD price initial feed mock params
ethUsdPriceFeed.updateMockParams(
1, // round id
2000_00000000, // answer, 2000_00000000 = $2000 (8 decimals)
block.timestamp, // started at
block.timestamp, // updated at
1 // answered in round
);

// set stable/USD price feed initial mock params
stableUsdPriceFeed.updateMockParams(
1, // round id
100_000_000, // answer, 100_000_000 = $1.00 (8 decimals)
block.timestamp, // started at
block.timestamp, // updated at
1 // answered in round
);

// set ETH/Governance initial price to 20k in Curve pool mock (20k GOV == 1 ETH)
curveGovernanceEthPool.updateMockParams(20_000e18);

curveDollarPlainPool.updateMockParams(1.01e18);

// set price feed for collateral token
ubiquityPoolFacet.setCollateralChainLinkPriceFeed(
address(collateralToken), // collateral token address
address(collateralTokenPriceFeed), // price feed address
1 days // price feed staleness threshold in seconds
);

// set price feed for ETH/USD pair
ubiquityPoolFacet.setEthUsdChainLinkPriceFeed(
address(ethUsdPriceFeed), // price feed address
1 days // price feed staleness threshold in seconds
);

// set price feed for stable/USD pair
ubiquityPoolFacet.setStableUsdChainLinkPriceFeed(
address(stableUsdPriceFeed), // price feed address
1 days // price feed staleness threshold in seconds
);

// enable collateral at index 0
ubiquityPoolFacet.toggleCollateral(0);
// set mint and redeem initial fees
ubiquityPoolFacet.setFees(
0, // collateral index
10000, // 1% mint fee
20000 // 2% redeem fee
);
// set redemption delay to 2 blocks
ubiquityPoolFacet.setRedemptionDelayBlocks(2);
// set mint price threshold to $1.01 and redeem price to $0.99
ubiquityPoolFacet.setPriceThresholds(1010000, 990000);
// set collateral ratio to 100%
ubiquityPoolFacet.setCollateralRatio(1_000_000);
// set Governance-ETH pool
ubiquityPoolFacet.setGovernanceEthPoolAddress(
address(curveGovernanceEthPool)
);

// set Curve plain pool in manager facet
managerFacet.setStableSwapPlainPoolAddress(
address(curveDollarPlainPool)
);

poolLiquidityMonitor.setDefenderRelayer(defenderRelayer);

// stop being admin
vm.stopPrank();

// mint 2000 Governance tokens to the user
deal(address(governanceToken), user, 2000e18);
// mint 2000 collateral tokens to the user
collateralToken.mint(address(user), 2000e18);
// user approves the pool to transfer collateral
vm.prank(user);
collateralToken.approve(address(ubiquityPoolFacet), 100e18);

vm.prank(user);
ubiquityPoolFacet.mintDollar(0, 1e18, 0.9e18, 1e18, 0, true);
}

function testSetThresholdPercentage() public {
Expand All @@ -34,8 +169,6 @@ contract PoolLiquidityMonitorTest is DiamondTestSetup {
}

function testDropLiquidityVertex() public {
vm.expectRevert("Insufficient liquidity");

vm.prank(admin);
poolLiquidityMonitor.dropLiquidityVertex();
}
Expand All @@ -55,31 +188,50 @@ contract PoolLiquidityMonitorTest is DiamondTestSetup {
poolLiquidityMonitor.togglePaused();
}

function testSetDefenderRelayer() public {
address newRelayer = address(0x789);

vm.prank(admin);
poolLiquidityMonitor.setDefenderRelayer(newRelayer);
}

function testUnauthorizedSetDefenderRelayer() public {
address newRelayer = address(0x789);

vm.expectRevert("Manager: Caller is not admin");
poolLiquidityMonitor.setDefenderRelayer(newRelayer);
}

function testCheckLiquidity() public {
vm.prank(defenderRelayer);
poolLiquidityMonitor.checkLiquidityVertex();
}

function testUnauthorizedCheckLiquidity() public {
vm.prank(unauthorized);
vm.expectRevert("Not authorized: Only Defender Relayer allowed");

poolLiquidityMonitor.checkLiquidityVertex();
}

function testCheckLiquidity() public {
vm.expectRevert("Insufficient liquidity");

function testLiquidityDropBelowVertex() public {
vm.prank(defenderRelayer);
poolLiquidityMonitor.checkLiquidityVertex();
}

function testSetDefenderRelayer() public {
address newRelayer = address(0x789);
curveDollarPlainPool.updateMockParams(0.99e18);

vm.prank(admin);
poolLiquidityMonitor.setDefenderRelayer(newRelayer);
}
vm.prank(user);
ubiquityPoolFacet.redeemDollar(0, 5e17, 0, 0);

function testUnauthorizedSetDefenderRelayer() public {
address newRelayer = address(0x789);
// Call the checkLiquidityVertex function to test behavior after the liquidity drop
vm.prank(defenderRelayer);
poolLiquidityMonitor.checkLiquidityVertex();

vm.expectRevert("Manager: Caller is not admin");
poolLiquidityMonitor.setDefenderRelayer(newRelayer);
// Assert that the liquidity monitor paused after detecting a large drop
bool monitorPaused = poolLiquidityMonitor.monitorPaused();
assertTrue(
monitorPaused,
"Monitor should be paused after liquidity drop"
);
}
}

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