Merge pull request #176 from morpho-labs/refactor/wad-constant

refactor(wad): remove wad constant declaration

Author: MerlinEgalite

src/Blue.sol

@@ -10,7 +10,6 @@ import {FixedPointMathLib} from "src/libraries/FixedPointMathLib.sol";
 import {Id, Market, MarketLib} from "src/libraries/MarketLib.sol";
 import {SafeTransferLib} from "src/libraries/SafeTransferLib.sol";
 
-uint256 constant WAD = 1e18;
 uint256 constant MAX_FEE = 0.25e18;
 uint256 constant ALPHA = 0.5e18;
 
@@ -75,7 +74,7 @@ contract Blue {
     }
 
     function enableLltv(uint256 lltv) external onlyOwner {
-        require(lltv < WAD, Errors.LLTV_TOO_HIGH);
+        require(lltv < FixedPointMathLib.WAD, Errors.LLTV_TOO_HIGH);
         isLltvEnabled[lltv] = true;
     }
 
@@ -222,7 +221,8 @@ contract Blue {
         require(!_isHealthy(market, id, borrower, collateralPrice, borrowablePrice), Errors.HEALTHY_POSITION);
 
         // The liquidation incentive is 1 + ALPHA * (1 / LLTV - 1).
-        uint256 incentive = WAD + ALPHA.mulWadDown(WAD.divWadDown(market.lltv) - WAD);
+        uint256 incentive = FixedPointMathLib.WAD
+            + ALPHA.mulWadDown(FixedPointMathLib.WAD.divWadDown(market.lltv) - FixedPointMathLib.WAD);
         uint256 repaid = seized.mulWadUp(collateralPrice).divWadUp(incentive).divWadUp(borrowablePrice);
         uint256 repaidShares = repaid.toSharesDown(totalBorrow[id], totalBorrowShares[id]);
 

test/forge/Blue.t.sol

@@ -175,7 +175,7 @@ contract BlueTest is Test {
     }
 
     function testEnableLltv(uint256 newLltv) public {
-        newLltv = bound(newLltv, 0, WAD - 1);
+        newLltv = bound(newLltv, 0, FixedPointMathLib.WAD - 1);
 
         vm.prank(OWNER);
         blue.enableLltv(newLltv);
@@ -184,7 +184,7 @@ contract BlueTest is Test {
     }
 
     function testEnableLltvShouldFailWhenLltvTooHigh(uint256 newLltv) public {
-        newLltv = bound(newLltv, WAD, type(uint256).max);
+        newLltv = bound(newLltv, FixedPointMathLib.WAD, type(uint256).max);
 
         vm.prank(OWNER);
         vm.expectRevert(bytes(Errors.LLTV_TOO_HIGH));
@@ -210,7 +210,7 @@ contract BlueTest is Test {
 
     function testSetFeeShouldRevertIfMarketNotCreated(Market memory marketFuzz, uint256 fee) public {
         vm.assume(neq(marketFuzz, market));
-        fee = bound(fee, 0, WAD);
+        fee = bound(fee, 0, FixedPointMathLib.WAD);
 
         vm.prank(OWNER);
         vm.expectRevert("unknown market");
@@ -219,7 +219,7 @@ contract BlueTest is Test {
 
     function testSetFeeShouldRevertIfNotOwner(uint256 fee, address caller) public {
         vm.assume(caller != OWNER);
-        fee = bound(fee, 0, WAD);
+        fee = bound(fee, 0, FixedPointMathLib.WAD);
 
         vm.expectRevert("not owner");
         blue.setFee(market, fee);
@@ -486,7 +486,8 @@ contract BlueTest is Test {
         uint256 borrowingPower = amountCollateral.mulWadDown(LLTV);
         uint256 amountBorrowed = borrowingPower.mulWadDown(0.8e18);
         uint256 toSeize = amountCollateral.mulWadDown(LLTV);
-        uint256 incentive = WAD + ALPHA.mulWadDown(WAD.divWadDown(LLTV) - WAD);
+        uint256 incentive =
+            FixedPointMathLib.WAD + ALPHA.mulWadDown(FixedPointMathLib.WAD.divWadDown(LLTV) - FixedPointMathLib.WAD);
 
         borrowableAsset.setBalance(address(this), amountLent);
         collateralAsset.setBalance(BORROWER, amountCollateral);
@@ -529,7 +530,8 @@ contract BlueTest is Test {
         uint256 borrowingPower = amountCollateral.mulWadDown(LLTV);
         uint256 amountBorrowed = borrowingPower.mulWadDown(0.8e18);
         uint256 toSeize = amountCollateral;
-        uint256 incentive = WAD + ALPHA.mulWadDown(WAD.divWadDown(market.lltv) - WAD);
+        uint256 incentive = FixedPointMathLib.WAD
+            + ALPHA.mulWadDown(FixedPointMathLib.WAD.divWadDown(market.lltv) - FixedPointMathLib.WAD);
 
         borrowableAsset.setBalance(address(this), amountLent);
         collateralAsset.setBalance(BORROWER, amountCollateral);