This repository documents my contributions to the AsyncAPI Generator project.
My work primarily focused on test reliability, CI workflow optimization, and documentation fixes, with an emphasis on improving maintainability and engineering quality.
- Improved test isolation and determinism
- Increased test coverage for critical components
- Introduced better CI workflow design (parallelization + isolation)
- Fixed documentation inconsistencies
- Followed production-grade testing practices (mocking, snapshot validation, edge-case handling)
🔗 PR: asyncapi/generator#1995
The acceptance tests for multiple languages (JavaScript, Python, Java) were executed sequentially within a single job.
This caused:
- Failure in one language blocking others
- No per-language visibility in PR checks
- Slower CI due to lack of parallelism
- Harder debugging due to mixed logs
Refactored the workflow to use GitHub Actions matrix strategy, enabling:
- Parallel execution per language
- Isolated job environments
- Independent status reporting per language
This change improves CI scalability and fault isolation, aligning with modern CI/CD practices where independent test dimensions should not be coupled.
- Faster CI pipelines
- Improved debugging clarity
- Better contributor experience via granular feedback
🔗 PR: asyncapi/generator#1982
Tests relied on the real filesystem (process.cwd, actual files), causing:
- Non-deterministic behavior
- Environment-dependent failures
- Fragile test design
- Replaced real FS usage with mocked
fs.promises.stat - Used
jest.spyOnfor controlled mocking - Covered both execution paths:
- File exists →
true - File does not exist →
false
- File exists →
- Ensured proper mock cleanup to avoid cross-test pollution
Tests should be pure and deterministic, independent of external systems like filesystem or environment.
- Fully deterministic tests
- Improved reliability in CI
- Alignment with mock-driven testing practices
🔗 PR: asyncapi/generator#1954
The CoreMethods README component lacked proper validation of rendered output across supported languages.
- Added snapshot tests to validate rendered output
- Covered:
- Supported languages (JavaScript, Python)
- Unsupported/missing language scenarios
- Ensured consistent output structure
Snapshot testing is effective for UI/markdown output stability, especially in documentation generators.
- Increased confidence in rendering logic
- Prevented regressions in multi-language support
🔗 PR: asyncapi/generator#1945
The Installation README component had language-dependent logic but lacked direct test coverage.
- Added unit tests validating:
- Language-specific rendering (Python vs JavaScript)
- Output correctness of generated documentation
- Covered real rendering scenarios instead of shallow checks
Testing rendered output instead of implementation details ensures higher confidence in user-facing features.
- Improved coverage for critical public-facing component
- Reduced risk of documentation inconsistencies
🔗 PR: asyncapi/generator#1891
A documentation link pointed to a non-existent path, resulting in a 404 error.
Root cause:
- Duplicate path segment in URL
- Corrected the link to the valid path (
asyncapi-document)
Even small documentation issues degrade developer trust and onboarding experience.
- Fixed broken navigation
- Improved documentation reliability
- Importance of test isolation and mocking strategy
- Avoiding global side effects in unit tests
- Designing scalable CI workflows using matrix strategy
- Writing tests that validate behavior, not just implementation
- Maintaining clean, minimal, and review-friendly PRs
These contributions collectively improved:
- Test reliability and coverage
- CI performance and structure
- Developer experience
- Codebase maintainability
AsyncAPI Generator:
https://github.com/asyncapi/generator