boisenoise Paths: File paths (
shared/,references/,../ln-*) are relative to skills repo root. If not found at CWD, locate this SKILL.md directory and go up one level for repo root. Ifshared/is missing, fetch files via WebFetch fromhttps://raw.githubusercontent.com/levnikolaevich/claude-code-skills/master/skills/{path}.
Regression Checker
Type: L3 Worker Category: 5XX Quality
Runs the existing test suite to ensure no regressions after implementation changes.
Inputs
| Input | Required | Source | Description |
|---|---|---|---|
storyId |
Yes | args, git branch, kanban, user | Story to process |
Resolution: Story Resolution Chain. Status filter: To Review
Purpose & Scope
- Detect test framework (pytest/jest/vitest/go test/etc.) and test dirs.
- Execute full suite; capture stdout/stderr for Story quality gate.
- Return PASS/FAIL with counts/log excerpts; never modifies Linear or kanban.
- Preserve full stdout/stderr output for downstream log analysis.
When to Use
- After code quality checks pass
- Code quality check passed
Workflow
Phase 0: Resolve Inputs
MANDATORY READ: Load shared/references/input_resolution_pattern.md, shared/references/ci_tool_detection.md
- Resolve storyId: Run Story Resolution Chain per guide (status filter: [To Review]).
Phase 1: Execute Tests
MANDATORY READ: Load shared/references/output_normalization.md
Read target project files if they exist: docs/project/infrastructure.md, docs/project/runbook.md
- Auto-discover test framework per ci_tool_detection.md Command Registry (Test Frameworks section).
- Get service endpoints, port allocation from infrastructure.md. Get exact test commands, Docker setup, environment variables from runbook.md. Runbook commands take priority over auto-detection (per ci_tool_detection.md Discovery Hierarchy).
- Build appropriate test command; run with timeout (5min per ci_tool_detection.md); capture stdout/stderr.
- Parse results: passed/failed counts; key failing tests.
- Normalize + group failures: Apply
shared/references/output_normalization.md§1-§3 to test output. Group failing tests by error category (Import/Module, Assertion, Timeout, Type, Connection, Runtime). Report grouped: e.g., "3 Import errors in auth/, 2 Assertion mismatches in payment/". - Output verdict JSON (PASS or FAIL + grouped failures list) and add Linear comment.
Critical Rules
- No selective test runs; run full suite.
- Do not fix tests or change status; only report.
- Language preservation in comment (EN/RU).
Runtime Summary Artifact
MANDATORY READ: Load shared/references/quality_summary_contract.md, shared/references/quality_worker_runtime_contract.md
Runtime profile:
- family:
quality-worker - worker:
ln-513 - summary kind:
quality-worker - payload fields used by coordinators:
worker,status,verdict,issues,warnings,artifact_path
Invocation rules:
- standalone: omit
runIdandsummaryArtifactPath - managed: pass both
runIdand exactsummaryArtifactPath - always write the validated summary before terminal outcome
Monitor (2.1.98+): For test suite commands expected >30s, use Monitor. Fallback: Bash(run_in_background=true).
Definition of Done
- Framework detected; command executed
- Results parsed; verdict produced with failing tests (if any)
- Linear comment posted with summary
Reference Files
- Risk-based limits used downstream:
shared/references/risk_based_testing_guide.md - CI tool detection:
shared/references/ci_tool_detection.md - Output normalization:
shared/references/output_normalization.md - Pytest patterns:
references/pytest_configuration.md
Version: 3.1.0 Last Updated: 2026-01-09