## Best Practices

**DO:**
- Write tests FIRST (TDD)
- Use table-driven tests for comprehensive coverage
- Test behavior, not implementation
- Use `t.Helper()` in helper functions
- Use `t.Parallel()` for independent tests
- Clean up resources with `t.Cleanup()`
- Use meaningful test names that describe the scenario

**DON'T:**
- Test private functions directly (test through public API)
- Use `time.Sleep()` in tests (use channels or conditions)
- Ignore flaky tests (fix or remove them)
- Mock everything (prefer integration tests when possible)
- Skip error path testing