feat: Implement TransferEventEmitter (v1.0.0) #770
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Actionable comments posted: 1
Outside diff range, codebase verification and nitpick comments (2)
test/solidity/Facets/GenericSwapFacetV3.t.sol (2)
1547-1600: LGTM! Consider additional logging for debugging.The function
_produceSwapDataERC20FeeAndEmitTransferEventis well-implemented.Consider adding more detailed logging or assertions to aid in debugging and ensure correctness.
You can log intermediate values like
amountOutFeeCollectionto verify calculations during execution.+ console.log("Amount after fee collection:", amountOutFeeCollection);
1642-1686: LGTM! Consider adding edge case tests.The test
test_CanCollectERC20FeesAndTransferERC20_V1is thorough and well-structured.Consider adding tests for edge cases, such as zero or maximum token amounts, to ensure robustness.
Add edge case tests to cover scenarios like zero fees or maximum token transfers.
// Example edge case test function test_ZeroAmountTransfer() public { // Implement test logic for zero amount transfer }
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Files selected for processing (2)
- src/Periphery/TransferEventEmitter.sol (1 hunks)
- test/solidity/Facets/GenericSwapFacetV3.t.sol (8 hunks)
Additional comments not posted (2)
test/solidity/Facets/GenericSwapFacetV3.t.sol (2)
Line range hint
1601-1687: Overall, the test suite is comprehensive and well-structured.The tests cover a wide range of scenarios and ensure the correctness of the swap functionality.
Also applies to: 1688-1689
15-15: LGTM! Verify event emission in tests.The integration of
TransferEventEmitteris correct.Ensure that the events emitted by
TransferEventEmitterare correctly captured and verified in your tests.Run the following script to verify event emission in test cases:
Also applies to: 102-122, 207-210
Verification successful
Event Emission Verified in Tests
The
TokensTransferredevent is correctly emitted in the Solidity test files. Ensure that these emissions are captured and verified in your test assertions to confirm expected behavior.
- Instances of
emit TokensTransferredwere found in the test files.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that `TokensTransferred` events are emitted in test cases. # Test: Search for `TokensTransferred` event emission in test files. Expect: Occurrences in relevant test cases. rg --type solidity 'emit TokensTransferred'Length of output: 78
Script:
#!/bin/bash # Description: Find all Solidity test files and search for `TokensTransferred` event emission. # Find all Solidity test files and search for the event emission pattern. fd --extension sol --exec rg 'emit TokensTransferred' {}Length of output: 149
| contract TransferEventEmitter { | ||
| event TokensTransferred( | ||
| address token, | ||
| address from, | ||
| address to, | ||
| uint256 amount | ||
| ); | ||
|
|
||
| function emitTransferEvent( | ||
| address token, | ||
| address from, | ||
| address to, | ||
| uint256 amount | ||
| ) external { | ||
| emit TokensTransferred(token, from, to, amount); | ||
| } |
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Consider adding access control to emitTransferEvent.
The emitTransferEvent function is external and can be called by any address. Consider adding access control to restrict who can emit transfer events.
You can use OpenZeppelin's Ownable contract to restrict access to the owner:
import "@openzeppelin/contracts/access/Ownable.sol";
contract TransferEventEmitter is Ownable {
// ...
function emitTransferEvent(
address token,
address from,
address to,
uint256 amount
) external onlyOwner {
emit TokensTransferred(token, from, to, amount);
}
}
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Actionable comments posted: 0
Outside diff range, codebase verification and nitpick comments (1)
test/solidity/Facets/GenericSwapFacetV3.t.sol (1)
1542-1589: Add comments for clarity in_produceSwapDataERC20FeeAndEmitTransferEvent.Consider adding comments to explain the purpose of each swap operation within the function for better readability and maintainability.
+ // Prepare swap operation for collecting ERC20 fees swapData = new LibSwap.SwapData[](2); swapData[0] = LibSwap.SwapData( FEE_COLLECTOR, FEE_COLLECTOR, DAI_ADDRESS, DAI_ADDRESS, amountIn, abi.encodeWithSelector( feeCollector.collectTokenFees.selector, DAI_ADDRESS, integratorFee, lifiFee, integratorAddress ), true ); uint256 amountOutFeeCollection = amountIn - integratorFee - lifiFee; minAmountOut = amountOutFeeCollection; + // Prepare swap operation for emitting transfer event swapData[1] = LibSwap.SwapData( address(eventEmitter), address(eventEmitter), DAI_ADDRESS, DAI_ADDRESS, amountOutFeeCollection, abi.encodeWithSelector(eventEmitter.emitTransferEvent.selector), false );
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Files selected for processing (2)
- src/Periphery/TransferEventEmitter.sol (1 hunks)
- test/solidity/Facets/GenericSwapFacetV3.t.sol (8 hunks)
Files skipped from review due to trivial changes (1)
- src/Periphery/TransferEventEmitter.sol
Additional comments not posted (4)
test/solidity/Facets/GenericSwapFacetV3.t.sol (4)
15-15: Import statement forTransferEventEmitter.The import statement for
TransferEventEmitteris correctly added, ensuring access to the event emitter functionality.
65-65: EventTokensTransferreddeclaration.The event
TokensTransferredis declared to log token transfer events. Ensure that it is emitted at appropriate places in the contract to enhance transparency.
97-97: Internal variableeventEmitterdeclaration.The internal variable
eventEmitteris declared to instantiate theTransferEventEmitter. Ensure it is initialized and used correctly in the contract.
1631-1670: Test functiontest_CanCollectERC20FeesAndTransferERC20_V1is well-structured.The test effectively validates the functionality of collecting ERC20 fees and transferring tokens, ensuring that the correct events are emitted.
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Actionable comments posted: 0
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Files selected for processing (1)
- test/solidity/Periphery/TransferEventEmitter.t.sol (1 hunks)
Additional comments not posted (3)
test/solidity/Periphery/TransferEventEmitter.t.sol (3)
4-12: Imports and contract setup look good.The imports and initial setup of the contract are correct and follow best practices for Solidity testing.
15-17:setUpfunction is correctly implemented.The
setUpfunction properly initializes theTransferEventEmitterinstance for testing.
19-23:testCanEmitTransferEventfunction is correctly implemented.The test function correctly verifies the emission of the
TokensTransferredevent usingvm.expectEmit.
ezynda3
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Summary by CodeRabbit
New Features
TransferEventEmitterto enhance transparency and traceability of token transfers by emittingTokensTransferredevents.TransferEventEmitterto validate event emissions and ensure correct functionality during token transfers.Bug Fixes