test: add tests to refactor

[tac0turtle]

Overview

[github-actions]

The latest Buf updates on your PR. Results from workflow CI and Release / buf-check (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	⏩ skipped	✅ passed	✅ passed	Sep 11, 2025, 9:36 AM

[github-actions]

PR Preview Action v1.6.2
Preview removed because the pull request was closed.
2025-09-11 09:49 UTC

[claude]

Code Review

I've reviewed the added test files and the small bug fix. Here's my comprehensive feedback:

✅ Strengths

Code Quality & Best Practices:

• Excellent adherence to Go testing conventions and project patterns
• Proper use of testify assertions (require.NoError, assert.Equal, etc.)
• Good test isolation with in-memory datastores and proper cleanup
• Consistent helper function patterns (buildTestSigner, buildSyncTestSigner)
• Appropriate use of mocks from the existing test/mocks package

Test Coverage:

• Executor Logic Tests: Cover critical scenarios like empty batch handling and pending limit logic
• DA Handler Tests: Validate header/data submission and inclusion tracking
• Syncer Logic Tests: Test state synchronization and DA inclusion advancement
• Tests cover both happy path and edge cases (empty transactions, pending limits)

Security:

• Proper cryptographic key generation using crypto/rand
• Safe handling of signatures and verification
• No exposure of sensitive data in test assertions

🐛 Bug Fix Validation

The fix in da_handler.go:485 changing len(data.Data.Txs) to len(data.Txs) is correct:

• Fixes incorrect field access pattern
• Aligns with the types.Data structure where Txs is a direct field
• Prevents potential runtime panics from accessing nested fields

🚀 Performance Considerations

• Tests use appropriate timeouts (10ms block times) for fast execution
• Efficient use of in-memory stores for isolated testing
• Proper resource cleanup with context cancellation
• Mocks prevent expensive external calls during testing

💡 Minor Improvement Opportunities

1. Test Helper Consolidation: Consider consolidating the similar signer builders (buildTestSigner, buildSyncTestSigner) into a shared test utility to reduce duplication.

2. Missing mockBroadcaster Definition: The executor_logic_test.go uses mockBroadcaster but doesn't define it - it relies on the definition in executor_test.go. Consider moving this to a shared test file or redefining it locally for better test isolation.

3. Test Determinism: Consider using fixed timestamps instead of time.Now() in some tests for more deterministic behavior, especially in CI environments.

🎯 Overall Assessment

This is a well-crafted addition that significantly improves test coverage for critical block package components. The tests follow project conventions, use appropriate mocking strategies, and cover important edge cases. The bug fix is small but important for correctness.

Recommendation: ✅ APPROVE

The tests are ready for merge and will help prevent regressions in the block processing logic.

[julienrbrt]

it is a good start 👍🏾 nice structure!