test-gap-analysis Skill
Performs pseudo-mutation analysis on production code in any language to find gaps in existing test suites. Use when the user asks to find weak tests, discover untested edge cases, check if tests would catch a bug, or evaluate test effectiveness through mutation-style reasoning. Analyzes production code for mutation poi Published by microsoft in testfx.
What is test-gap-analysis Skill?
Performs pseudo-mutation analysis on production code in any language to find gaps in existing test suites. Use when the user asks to find weak tests, discover untested edge cases, check if tests would catch a bug, or evaluate test effectiveness through mutation-style reasoning. Analyzes production code for mutation poi Published by microsoft in testfx. This profile combines repository metadata with install, compatibility, and usage signals so developers can quickly decide whether it fits their agent workflow before opening the source repository.
Automated repository signals based on public metadata such as recency, license, installation evidence, and adoption. These are not a security audit or endorsement.
Key capabilities
- Includes SKILL.md support
- Reusable instructions support
- Testing
- Data analysis
- Testing use cases
- Data analysis use cases
Technical details
- Install or run with Copy skill directory
When to use test-gap-analysis Skill
- Use it for testing.
- Use it for data analysis.
Built with
Editorial notes
Source
- Creator: microsoft
- Repository: microsoft/testfx
- Skill file: .agents/skills/test-gap-analysis/SKILL.md
What it does
Performs pseudo-mutation analysis on production code in any language to find gaps in existing test suites. Use when the user asks to find weak tests, discover untested edge cases, check if tests would catch a bug, or evaluate test effectiveness through mutation-style reasoning. Analyzes production code for mutation poi
Skill instructions
Test Gap Analysis via Pseudo-Mutation Analyze production code in any supported language by reasoning about hypothetical mutations and checking whether existing tests would catch them. This reveals blind spots where tests pass but would continue to pass even if the code were broken. Language-specific guidance: Call the test-analysis-extensions skill to discover available extension files, then read the file matching the target codebase (e.g., extensions/dotnet.md, extensions/python.md, extensions/typescript.md). The extension file helps you find test files, recognize framework-specific assertion APIs, and identify language-specific null/None/nil patterns and error-handling idioms that map to the mutation catalog below. Why Pseudo-Mutation Matters Code coverage tells you what code ran during tests. It does not tell you whether tests would fail if that code were wrong. A method can have 100% line coverage but zero tests that would catch a sign flip, an off-by-one error, or a removed null c
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Frequently asked questions
What is test-gap-analysis?
test-gap-analysis is a open-source AI agent skill with Copy skill directory. Performs pseudo-mutation analysis on production code in any language to find gaps in existing test suites.
Who is test-gap-analysis best for?
test-gap-analysis is best for reusing agent instructions, scripts, and references, testing workflows, data analysis workflows.
How do I install test-gap-analysis?
Install or run test-gap-analysis using Copy skill directory. Check test-gap-analysis for the latest setup command.
Is test-gap-analysis actively maintained?
test-gap-analysis may need a closer maintenance check before production use.
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