domains / families / software-engineering / supercov

supercov

authentic

Measure line, branch and MC/DC coverage of a project's existing tests with the supercov CLI, then write small, focused tests for the code no test reaches.

When to use

• Use when the user asks to add or improve tests.
• Use when the user asks which code is untested, or asks to raise coverage.
• Use when the user asks which file to refactor first and has agreed to a quality check (see "Quality check").

When not to use

• Coverage shows which code ran under a test. It does not show that the test checked the result.
• Supercov measures the suites listed in `npx supercov@3.0.4 docs supported-suites`. Other runners are not measured.
• The test command runs as the project defines it. If the suite needs services, credentials or network access, those needs still apply.
• This skill does not replace environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, or safety boundaries are missing.

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