blueprint-derive-testslisted
Install: claude install-skill laurigates/claude-plugins
# /blueprint:derive-tests
Analyze git history to identify fix and feature commits lacking corresponding test changes, then generate a structured Test Regression Plan (TRP) document as a prioritized test backlog.
**Use case**: Systematically close test coverage gaps by mining commit history for bug fixes and features that shipped without regression tests.
## When to Use This Skill
| Use this skill when... | Use alternative when... |
|------------------------|-------------------------|
| Bug fixes ship without regression tests | You need to run existing tests (`/test:run`) |
| Want a prioritized test backlog from history | Writing tests for a specific feature (manual TDD) |
| Onboarding a project and assessing test health | Checking current test coverage metrics |
| Need to find which fixes lack test coverage | Designing a test strategy from scratch (`/test:architecture`) |
## Context
- Git repository: !`git rev-parse --git-dir`
- Blueprint initialized: !`find docs/blueprint -maxdepth 1 -name 'manifest.json' -type f`
- Total commits: !`git rev-list --count HEAD`
- Test framework: !`find . -maxdepth 3 \( -name 'vitest.config.*' -o -name 'jest.config.*' -o -name 'pytest.ini' -o -name 'pyproject.toml' -o -name 'Cargo.toml' -o -name 'go.mod' \) -type f -print -quit`
- Test files: !`find . -maxdepth 4 -type f \( -name '*.test.*' -o -name '*.spec.*' -o -name 'test_*' -o -name '*_test.*' \) -print`
- Conventional commits sample: !`git log --format="%s" --max-count=10`
## Parame