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fix(transfer): allow zero transfers #329

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merged 5 commits into from
Oct 31, 2023
Merged

fix(transfer): allow zero transfers #329

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ee47039
fix(transfer): allow zero transfers
Rubilmax Oct 25, 2023
88c33ae
test(transfer): test zero amount
Rubilmax Oct 25, 2023
193e76b
fix(transfer): return instead of call
Rubilmax Oct 26, 2023
c8955fb
Merge branch 'fix/issue-17' of github.com:morpho-labs/morpho-stack in…
Rubilmax Oct 26, 2023
7048fe8
docs(transfer): document edge-case
Rubilmax Oct 26, 2023
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4 changes: 0 additions & 4 deletions src/TransferBundler.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -26,8 +26,6 @@ abstract contract TransferBundler is BaseBundler {

amount = Math.min(amount, address(this).balance);

require(amount != 0, ErrorsLib.ZERO_AMOUNT);

SafeTransferLib.safeTransferETH(recipient, amount);
}

Expand All @@ -40,8 +38,6 @@ abstract contract TransferBundler is BaseBundler {

amount = Math.min(amount, ERC20(asset).balanceOf(address(this)));

require(amount != 0, ErrorsLib.ZERO_AMOUNT);

ERC20(asset).safeTransfer(recipient, amount);
}

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21 changes: 10 additions & 11 deletions test/forge/TransferBundlerLocalTest.sol
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Expand Up @@ -15,7 +15,7 @@ contract TransferBundlerLocalTest is LocalTest {
}

function testTransfer(uint256 amount) public {
amount = bound(amount, MIN_AMOUNT, MAX_AMOUNT);
amount = bound(amount, 0, MAX_AMOUNT);

bundle.push(_erc20Transfer(address(loanToken), RECEIVER, amount));

Expand Down Expand Up @@ -45,11 +45,17 @@ contract TransferBundlerLocalTest is LocalTest {
bundler.multicall(bundle);
}

function testTranferZeroAmount() public {
bundle.push(_erc20Transfer(address(loanToken), RECEIVER, 0));
function testNativeTransfer(uint256 amount) public {
amount = bound(amount, 0, MAX_AMOUNT);

bundle.push(_nativeTransfer(RECEIVER, amount));

deal(address(bundler), amount);

vm.expectRevert(bytes(ErrorsLib.ZERO_AMOUNT));
bundler.multicall(bundle);

assertEq(address(bundler).balance, 0, "bundler.balance");
assertEq(RECEIVER.balance, amount, "RECEIVER.balance");
}

function testNativeTransferZeroAddress(uint256 amount) public {
Expand All @@ -70,13 +76,6 @@ contract TransferBundlerLocalTest is LocalTest {
bundler.multicall(bundle);
}

function testNativeTransferZeroAmount() public {
bundle.push(_nativeTransfer(RECEIVER, 0));

vm.expectRevert(bytes(ErrorsLib.ZERO_AMOUNT));
bundler.multicall(bundle);
}

function testTransferFrom(uint256 amount) public {
amount = bound(amount, MIN_AMOUNT, MAX_AMOUNT);

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