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Merge pull request #596 from morpho-org/ci/invariant-no-interest
test(invariant): re-implement lost invariants
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| // SPDX-License-Identifier: GPL-2.0-or-later | ||
| pragma solidity ^0.8.0; | ||
|
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| import "./BaseMorphoInvariantTest.sol"; | ||
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| contract MorphoDynamicInvariantTest is BaseMorphoInvariantTest { | ||
| using MathLib for uint256; | ||
| using SharesMathLib for uint256; | ||
| using MorphoLib for IMorpho; | ||
| using MorphoBalancesLib for IMorpho; | ||
| using MarketParamsLib for MarketParams; | ||
|
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| uint256 internal immutable MIN_PRICE = ORACLE_PRICE_SCALE / 10; | ||
| uint256 internal immutable MAX_PRICE = ORACLE_PRICE_SCALE * 10; | ||
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| function setUp() public virtual override { | ||
| _weightSelector(this.supplyAssetsOnBehalfNoRevert.selector, 15); | ||
| _weightSelector(this.supplySharesOnBehalfNoRevert.selector, 5); | ||
| _weightSelector(this.withdrawAssetsOnBehalfNoRevert.selector, 10); | ||
| _weightSelector(this.borrowAssetsOnBehalfNoRevert.selector, 15); | ||
| _weightSelector(this.repayAssetsOnBehalfNoRevert.selector, 10); | ||
| _weightSelector(this.repaySharesOnBehalfNoRevert.selector, 10); | ||
| _weightSelector(this.supplyCollateralOnBehalfNoRevert.selector, 15); | ||
| _weightSelector(this.withdrawCollateralOnBehalfNoRevert.selector, 10); | ||
| _weightSelector(this.liquidateSeizedAssetsNoRevert.selector, 2); | ||
| _weightSelector(this.liquidateRepaidSharesNoRevert.selector, 2); | ||
| _weightSelector(this.setFeeNoRevert.selector, 1); | ||
| _weightSelector(this.setPrice.selector, 5); | ||
| _weightSelector(this.mine.selector, 100); | ||
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| super.setUp(); | ||
| } | ||
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| /* HANDLERS */ | ||
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| function setPrice(uint256 price) external { | ||
| price = bound(price, MIN_PRICE, MAX_PRICE); | ||
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| oracle.setPrice(price); | ||
| } | ||
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| /* INVARIANTS */ | ||
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| function invariantSupplyShares() public { | ||
| address[] memory users = targetSenders(); | ||
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| for (uint256 i; i < allMarketParams.length; ++i) { | ||
| MarketParams memory _marketParams = allMarketParams[i]; | ||
| Id _id = _marketParams.id(); | ||
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| uint256 sumSupplyShares = morpho.supplyShares(_id, FEE_RECIPIENT); | ||
| for (uint256 j; j < users.length; ++j) { | ||
| sumSupplyShares += morpho.supplyShares(_id, users[j]); | ||
| } | ||
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| assertEq(sumSupplyShares, morpho.totalSupplyShares(_id), vm.toString(_marketParams.lltv)); | ||
| } | ||
| } | ||
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| function invariantBorrowShares() public { | ||
| address[] memory users = targetSenders(); | ||
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| for (uint256 i; i < allMarketParams.length; ++i) { | ||
| MarketParams memory _marketParams = allMarketParams[i]; | ||
| Id _id = _marketParams.id(); | ||
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| uint256 sumBorrowShares; | ||
| for (uint256 j; j < users.length; ++j) { | ||
| sumBorrowShares += morpho.borrowShares(_id, users[j]); | ||
| } | ||
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| assertEq(sumBorrowShares, morpho.totalBorrowShares(_id), vm.toString(_marketParams.lltv)); | ||
| } | ||
| } | ||
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| function invariantTotalSupplyGeTotalBorrow() public { | ||
| for (uint256 i; i < allMarketParams.length; ++i) { | ||
| MarketParams memory _marketParams = allMarketParams[i]; | ||
| Id _id = _marketParams.id(); | ||
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| assertGe(morpho.totalSupplyAssets(_id), morpho.totalBorrowAssets(_id)); | ||
| } | ||
| } | ||
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| function invariantMorphoBalance() public { | ||
| for (uint256 i; i < allMarketParams.length; ++i) { | ||
| MarketParams memory _marketParams = allMarketParams[i]; | ||
| Id _id = _marketParams.id(); | ||
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| assertGe( | ||
| loanToken.balanceOf(address(morpho)) + morpho.totalBorrowAssets(_id), morpho.totalSupplyAssets(_id) | ||
| ); | ||
| } | ||
| } | ||
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| function invariantBadDebt() public { | ||
| address[] memory users = targetSenders(); | ||
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| for (uint256 i; i < allMarketParams.length; ++i) { | ||
| MarketParams memory _marketParams = allMarketParams[i]; | ||
| Id _id = _marketParams.id(); | ||
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| for (uint256 j; j < users.length; ++j) { | ||
| address user = users[j]; | ||
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| if (morpho.collateral(_id, user) == 0) { | ||
| assertEq( | ||
| morpho.borrowShares(_id, user), | ||
| 0, | ||
| string.concat(vm.toString(_marketParams.lltv), ":", vm.toString(user)) | ||
| ); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| // SPDX-License-Identifier: GPL-2.0-or-later | ||
| pragma solidity ^0.8.0; | ||
|
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| import "./BaseMorphoInvariantTest.sol"; | ||
|
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| contract MorphoStaticInvariantTest is BaseMorphoInvariantTest { | ||
| using MathLib for uint256; | ||
| using SharesMathLib for uint256; | ||
| using MorphoLib for IMorpho; | ||
| using MorphoBalancesLib for IMorpho; | ||
| using MarketParamsLib for MarketParams; | ||
|
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| function setUp() public virtual override { | ||
| _weightSelector(this.supplyAssetsOnBehalfNoRevert.selector, 12); | ||
| _weightSelector(this.supplySharesOnBehalfNoRevert.selector, 5); | ||
| _weightSelector(this.withdrawAssetsOnBehalfNoRevert.selector, 12); | ||
| _weightSelector(this.borrowAssetsOnBehalfNoRevert.selector, 17); | ||
| _weightSelector(this.repayAssetsOnBehalfNoRevert.selector, 12); | ||
| _weightSelector(this.repaySharesOnBehalfNoRevert.selector, 10); | ||
| _weightSelector(this.supplyCollateralOnBehalfNoRevert.selector, 15); | ||
| _weightSelector(this.withdrawCollateralOnBehalfNoRevert.selector, 10); | ||
| _weightSelector(this.setFeeNoRevert.selector, 2); | ||
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| super.setUp(); | ||
| } | ||
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| /* INVARIANTS */ | ||
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| function invariantHealthy() public { | ||
| address[] memory users = targetSenders(); | ||
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| for (uint256 i; i < allMarketParams.length; ++i) { | ||
| MarketParams memory _marketParams = allMarketParams[i]; | ||
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| for (uint256 j; j < users.length; ++j) { | ||
| assertTrue(_isHealthy(_marketParams, users[j])); | ||
| } | ||
| } | ||
| } | ||
| } |