sc30gsw/vcsdd-tdd
skills/vcsdd-tdd/SKILL.md
Run Phase 2a (test generation, Red phase) for the active VCSDD feature. Invokes vcsdd-builder to generate failing tests for all spec requirements. Records red phase evidence.
$ install --global
skillsauthnpx skillsauth add sc30gsw/vcsdd-claude-code vcsdd-tddInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Apr 16, 2026, 7:36 PM8.8s1 file scanned
SKILL.md
- name:
- vcsdd-tdd
- description:
- Run Phase 2a (test generation, Red phase) for the active VCSDD feature. Invokes vcsdd-builder to generate failing tests for all spec requirements. Records red phase evidence.
What
Runs the Red phase (Phase 2a): generates test cases for every requirement in the behavioral spec. Tests MUST FAIL before implementation begins. Records failure evidence.
When
Run after spec review gate (Phase 1c) passes. Requires active feature at phase 1c.
How
- Read behavioral spec: extract all REQ-XXX requirements
- Invoke vcsdd-builder agent to generate tests:
- One test function per requirement minimum
- Additional tests for each edge case in spec
- Tests for error conditions and boundary values
- Create test-case beads: one per test function, linked to corresponding REQ-XXX bead
- Transition to 2a: this starts sprint
Nfor the current implementation cycle (transitionPhase(feature, '2a')) - Run tests and verify they FAIL:
npm test 2>&1 | tee .vcsdd/features/<name>/evidence/sprint-N-red-phase.log - Verify regression baseline: run existing tests separately to confirm they still pass
- Record red phase evidence in the active sprint with explicit markers at the top of the log:
For coverage-retrofit sprints (adding tests to already-implemented code):new-feature-tests: FAIL regression-baseline: PASS- Use
coverage-retrofit: trueinstead ofnew-feature-tests: failing - Example:
coverage-retrofit: true regression-baseline: PASS total-tests: 45 new-tests-added: 3
- Use
- Append the raw failing test output after those markers so the gate can prove both conditions
- Display summary: sprint number, N tests generated, all failing as expected
CRITICAL: Red Phase Validation
If ANY new test passes before implementation, STOP. The test is invalid (it's testing the wrong thing or the implementation already exists). Fix the test first.
Examples
/vcsdd-tdd
/vcsdd-tdd --framework vitest # specify test framework
/vcsdd-tdd --framework pytest
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