Browse QA Skills

Writing custom static analysis rules for ESLint, Semgrep, and SonarQube to enforce project-specific code quality and security standards.

FastAPI application testing with TestClient, dependency injection overrides, async testing, database testing with SQLAlchemy, and OpenAPI validation.

Testing cookie and session management including secure flags, SameSite policy, session fixation, timeout behavior, and cross-domain cookie handling.

Detecting and diagnosing flaky tests using statistical analysis, execution recording, environmental factor isolation, and quarantine strategies.

Testing application configurations including environment variable validation, feature flag combinations, config file parsing, and default value verification.

Test-Driven Development mastery with red-green-refactor cycle, outside-in TDD, test-first design, and incremental development patterns.

Data-driven testing with parameterized tests, test matrices, combinatorial testing, and pairwise parameter generation techniques.

Testing data pipelines including ETL validation, data quality checks, pipeline orchestration testing, and data lineage verification.

Writing and testing YARA rules for malware detection, threat hunting, and file classification with rule validation and false-positive rate testing.

.NET testing with xUnit, NUnit, MSTest, FluentAssertions, Moq, integration testing with WebApplicationFactory, and Entity Framework testing.

Consumer-driven contract testing for microservices using Pact, ensuring API compatibility and preventing integration breakages across service boundaries.

Setting up and optimizing test pipelines in GitHub Actions with caching, parallel execution, matrix builds, and test result reporting.

Comprehensive website auditing skill using Lighthouse, PageSpeed Insights, and web performance APIs to audit performance, accessibility, SEO, best practices, and security.

Coverage-guided fuzz testing using libFuzzer for C/C++ applications to find memory corruption, buffer overflows, and crash-inducing inputs.

Next.js application testing covering Server Components, App Router, API routes, middleware, dynamic routes, and SSR/SSG testing patterns.

Svelte component testing with @testing-library/svelte, vitest, component rendering, event simulation, store testing, and SvelteKit testing.

Comprehensive file upload testing including format validation, size limits, malware scanning, storage verification, and concurrent upload handling.

Automated cross-browser testing across Chrome, Firefox, Safari, and Edge with visual comparison, feature detection, and polyfill verification.

Generating human-readable test documentation from test code including test catalogs, coverage reports, and living documentation websites.