improve tests

[gabriel-aranha-cw]

1. Add receipt validation on multiple txs test.
2. Create evm_mine helper rpc method.
3. Improve BLOCK_MODE condition to allow 1s mode.

[github-actions]

PR Review 🔍

(Review updated until commit 35874e6)

⏱️ Estimated effort to review [1-5]	2, because the PR involves a moderate amount of changes across multiple files, primarily focused on enhancing testing capabilities and modifying mining intervals. The logic is straightforward, but verifying the correctness of blockchain-related operations requires specific domain knowledge.
🧪 Relevant tests	Yes
⚡ Possible issues	Possible Bug: The use of process.env.BLOCK_MODE === '1s' in hardhat.config.ts might not correctly handle the environment variable as expected if it is not strictly equal to '1s'. This could lead to unexpected mining behavior.
🔒 Security concerns	No

Code feedback:

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relevant file	e2e/hardhat.config.ts
suggestion	Consider using a more robust method to handle environment variables. Using process.env.BLOCK_MODE.includes('1s') might be more flexible if the environment variable can contain additional characters or be part of a larger string. [medium]
relevant line	auto: process.env.BLOCK_MODE === 'automine' || process.env.BLOCK_MODE === '1s',

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relevant file	e2e/test/helpers/rpc.ts
suggestion	Add error handling in the sendEvmMine function to manage potential failures when calling evm_mine. This could improve the robustness of test scripts by allowing them to handle errors gracefully. [important]
relevant line	const result = await send("evm_mine", []);

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[github-actions]

PR Code Suggestions ✨

Category	Suggestion	Score
Error handling	Add error handling to the sendEvmMine function calls Ensure that the sendEvmMine function is properly handling exceptions or errors that might occur during the mining process. e2e/test/automine/e2e-json-rpc.test.ts [108] -await sendEvmMine(); +try { + await sendEvmMine(); +} catch (error) { + console.error('Error during mining:', error); +} Suggestion importance[1-10]: 9 Why: Adding error handling to the sendEvmMine function calls is important for robustness and reliability, especially in a testing environment. This suggestion addresses a potential issue that could lead to unhandled exceptions.	9
Maintainability	Extract transaction receipt validation into a separate function Refactor the repeated transaction receipt validation code into a separate function to improve code reuse and maintainability. e2e/test/external/e2e-multiple-tx.test.ts [48-64] for (let txHash of txHashes) { + validateTransactionReceipt(txHash, latestBlockAfterMining); +} + +async function validateTransactionReceipt(txHash, latestBlock) { const receipt = await send('eth_getTransactionReceipt', [txHash]); expect(receipt).to.exist; expect(receipt.transactionHash).to.equal(txHash); ... } Suggestion importance[1-10]: 8 Why: Extracting the transaction receipt validation into a separate function enhances code readability and maintainability by reducing redundancy. This is a good practice for cleaner and more modular code.	8
	Replace hardcoded string literals with constants or enums for BLOCK_MODE Consider using a constant or enum for BLOCK_MODE values to avoid hardcoding strings multiple times, which can lead to errors if the strings are mistyped or changed in the future. e2e/hardhat.config.ts [24-25] -auto: process.env.BLOCK_MODE === 'automine' || process.env.BLOCK_MODE === '1s', -interval: process.env.BLOCK_MODE === 'automine' ? undefined : (process.env.BLOCK_MODE === '1s' ? 1000 : 0) +auto: process.env.BLOCK_MODE === BLOCK_MODES.AUTOMINE || process.env.BLOCK_MODE === BLOCK_MODES.INTERVAL, +interval: process.env.BLOCK_MODE === BLOCK_MODES.AUTOMINE ? undefined : (process.env.BLOCK_MODE === BLOCK_MODES.INTERVAL ? 1000 : 0) Suggestion importance[1-10]: 7 Why: Using constants or enums for BLOCK_MODE values improves maintainability and reduces the risk of errors due to mistyped strings. However, this suggestion is not critical and does not address any major bugs or security issues.	7
Best practice	Add type annotations to the sendEvmMine function Add type annotations to the sendEvmMine function to improve code clarity and type safety. e2e/test/helpers/rpc.ts [210-212] -export async function sendEvmMine(): Promise<any> { +export async function sendEvmMine(): Promise<MineResult> { const result = await send("evm_mine", []); return result; } Suggestion importance[1-10]: 6 Why: Adding type annotations improves code clarity and type safety, which is beneficial for maintainability and reducing potential type-related errors. However, this suggestion is more of a best practice and does not address any critical issues.	6

[github-actions]

Persistent review updated to latest commit 35874e6

[github-actions]

PR Code Suggestions ✨

Category	Suggestion	Score
Error handling	Add error handling to the sendEvmMine function to improve robustness Add error handling for the sendEvmMine function to manage potential failures in the send function call. This can be achieved by using a try-catch block to catch and handle errors appropriately. e2e/test/helpers/rpc.ts [210-212] export async function sendEvmMine(): Promise<any> { - const result = await send("evm_mine", []); - return result; + try { + const result = await send("evm_mine", []); + return result; + } catch (error) { + console.error("Failed to mine a block:", error); + throw error; + } } Suggestion importance[1-10]: 9 Why: Adding error handling significantly improves the robustness of the function by managing potential failures. This is a crucial improvement for reliability.	9
Maintainability	Refactor repeated transaction receipt checks into a separate function to improve code organization Refactor the repeated transaction receipt validation logic into a separate function to reduce code duplication and improve test readability. e2e/test/external/e2e-multiple-tx.test.ts [48-64] for (let txHash of txHashes) { + validateTransactionReceipt(txHash, latestBlockAfterMining); +} + +async function validateTransactionReceipt(txHash: string, block: any) { const receipt = await send('eth_getTransactionReceipt', [txHash]); expect(receipt).to.exist; expect(receipt.transactionHash).to.equal(txHash); ... } Suggestion importance[1-10]: 8 Why: Refactoring repeated code into a separate function reduces duplication and enhances readability and maintainability. This is a good practice for cleaner code.	8
	Replace magic numbers with named constants for clarity and maintainability Consider using a constant for the interval values to avoid magic numbers and improve maintainability. Define constants for the interval values like AUTOMINE_INTERVAL and ONE_SECOND_INTERVAL at the top of your file or in a configuration file. e2e/hardhat.config.ts [24-25] auto: process.env.BLOCK_MODE === 'automine' || process.env.BLOCK_MODE === '1s', -interval: process.env.BLOCK_MODE === 'automine' ? undefined : (process.env.BLOCK_MODE === '1s' ? 1000 : 0) +interval: process.env.BLOCK_MODE === 'automine' ? undefined : (process.env.BLOCK_MODE === '1s' ? AUTOMINE_INTERVAL : ONE_SECOND_INTERVAL) Suggestion importance[1-10]: 7 Why: Using named constants instead of magic numbers improves code readability and maintainability. This suggestion is correct and beneficial, though it addresses a minor issue.	7
Readability	Improve variable naming for better code readability Use a more descriptive variable name than prev_number to enhance code readability. Consider renaming it to previousBlockNumber. e2e/test/automine/e2e-json-rpc.test.ts [107-109] -let prev_number = (await latest()).block_number; +let previousBlockNumber = (await latest()).block_number; await sendEvmMine(); -expect((await latest()).block_number).eq(prev_number + 1); +expect((await latest()).block_number).eq(previousBlockNumber + 1); Suggestion importance[1-10]: 6 Why: Using more descriptive variable names enhances code readability. This suggestion is correct but addresses a minor readability issue.	6