Testing & Security

Review code for best practices, potential bugs, security vulnerabilities, and performance issues

Use when building, auditing, or reviewing SvelteKit remote functions for validation, batching, and optimistic UI patterns

Builds, tests, and formats ComposeWebView multiplatform library. Handles Android, iOS, Desktop (JVM), and Web (JS) platforms. Use when building, testing, running Spotless formatting, or checking platform-specific code. Supports expect/actual pattern workflows.

This skill should be used when working with C++ projects, CMakeLists.txt, Ninja, clang-tidy, clang-format, GoogleTest, Catch2, or Modern C++ (C++11-23) language patterns. Provides comprehensive C++ ecosystem patterns and best practices.

This skill should be used when working with Rust projects, "Cargo.toml", "rustc", "cargo build/test/run", "clippy", "rustfmt", or Rust language patterns. Provides comprehensive Rust ecosystem patterns and best practices.

This skill should be used when the user asks to "write go", "golang", "go.mod", "go module", "go test", "go build", or works with Go language development. Provides comprehensive Go ecosystem patterns and best practices.

This skill should be used when the user asks to "write tests", "test strategy", "coverage", "unit test", "integration test", or needs testing guidance. Provides testing methodology and patterns.

This skill should be used when the user asks to "check documentation", "latest API", "library docs", "context7", or needs up-to-date library documentation. Provides Context7 MCP usage patterns.

Detect orphaned tests, obsolete assertions, and test-code misalignment. Use for test suite maintenance, cleanup, and traceability validation.

Review GitHub pull requests for code quality, security, and best practices. Use for automated PR feedback and approval workflows.

Run mutation testing to validate test quality beyond code coverage. Use when assessing test effectiveness, finding weak tests, or validating test suite quality.

Execute JavaScript/TypeScript tests with Vitest, supporting coverage, watch mode, and parallel execution. Use for JS/TS test automation.

Suggest and apply fixes for flaky tests based on detected patterns. Use after flaky-detect identifies unreliable tests that need repair. Use when relevant to the task.

Run mutation testing to validate test quality beyond code coverage. Use when assessing test effectiveness, finding weak tests, or validating test suite quality.

Analyze test coverage, identify gaps, and recommend test improvements. Use when relevant to the task.

Execute Python tests with pytest, supporting fixtures, markers, coverage, and parallel execution. Use for Python test automation.

Identify flaky tests from CI history and test execution patterns. Use when debugging intermittent test failures, auditing test reliability, or improving CI stability.

Configure TDD enforcement via pre-commit hooks and CI coverage gates. Use when setting up test-first development workflow, adding coverage gates, or enforcing TDD practices.

Suggest and apply fixes for flaky tests based on detected patterns. Use after flaky-detect identifies unreliable tests that need repair.

Detect orphaned tests, obsolete assertions, and test-code misalignment. Use for test suite maintenance, cleanup, and traceability validation. Use when relevant to the task.