test

name	test
description	TDD loop. RED-GREEN-REFACTOR until coverage target met.

Activate When

• /godmode:test, "write tests", "test coverage"

The Loop

# Measure current coverage
npx vitest --coverage 2>&1 | tail -5
# Or: pytest --cov=src --cov-report=term | grep TOTAL
# Or: go test -cover ./...

coverage = measure_coverage()
target = user_target OR 80
current_iteration = 0

WHILE coverage < target:
    current_iteration += 1
    # 1. FIND — coverage report, untested lines
    #    Priority: happy > error > edge > integration
    # 2. RED — write ONE test. It MUST fail.
    #    IF passes immediately: wrong test, delete
    # 3. GREEN — write minimum code -> PASS
    # 4. REFACTOR — remove test duplication
    #    Run ALL tests. IF unrelated breaks -> revert
    # 5. COMMIT: git add {file} && git commit
    # 6. MEASURE: coverage = measure_coverage()
    # 7. LOG to .godmode/test-results.tsv
    IF current_iteration % 5 == 0:
        print "Iter {N}: {coverage}% (target: {target}%)"

Print: "Coverage: {start}% -> {final}% in {N} iters"

Quality Targets

• Coverage target: >=80% line coverage (configurable)
• Test execution: <30s for unit suite, <120s for integration
• Flaky tests: 0 tolerated (quarantine immediately)
• Test-to-code ratio: >=1.5 test lines per code line
• Max test file size: <300 lines (split if larger)
• Assertion density: >=2 assertions per test average

Output Format

Print: Test: coverage {start}% -> {final}% (target: {target}%). {N} tests added in {iters} iterations. Status: {DONE|PARTIAL}.

Workflow Detail

1. Detect framework: read package.json, pytest.ini, Cargo.toml, go.mod to find test runner.
2. Baseline coverage: run coverage command, parse report, record starting percentage.
3. Identify gaps: read coverage report line-by-line, list uncovered functions sorted by importance.
4. RED: write one failing test targeting the highest-priority uncovered path.
5. GREEN: write minimum production code (or confirm existing code) to make the test pass.
6. REFACTOR: clean up duplication in test and source, re-run full suite to confirm no regressions.
7. COMMIT: stage test file and any changed source, commit with message test: cover {function/path}.
8. MEASURE: re-run coverage, compute delta, log to TSV.
9. REPEAT: go to step 3 until coverage target met or stop condition triggers.
10. FINAL REPORT: print summary with start coverage, final coverage, iterations, tests added, and status.

Hard Rules

0. Inherits Default Activations per SKILL.md §14. Principles prelude, pre-commit audit (agents/tester.md step 11a), terse/stdio/tokens, DispatchContext validation, Progressive Disclosure routing, discard cost hierarchy all fire by default.
1. RED first -- test must fail before implementation. If passes immediately: wrong test, delete.
2. One test per iteration -- atomic, revertable.
3. No mocking unless external I/O (network, fs, clock). Test names: should_{verb}_when_{condition}.
4. Min 1 assertion per test; 3+ recommended.
5. Priority: happy_path > error_path > edge_case.
6. Never keep a test that does not increase coverage.
7. Never ask to continue. Loop autonomously.

Keep/Discard Discipline

KEEP if: coverage increased AND all existing tests pass
DISCARD if: coverage unchanged OR existing test broke
  On discard: git reset --hard HEAD~1
  Log reason. Move to next uncovered path.

Overfitting Prevention

Tests must cover behavior, not implementation. If a test breaks when internals change but behavior is preserved → test is overfitted. Rewrite it.

Stop Conditions

STOP when FIRST of:
  - coverage >= target (default 80%)
  - 50 iterations reached (safety limit)
  - 3 consecutive iterations with <0.5% gain
  - >5 consecutive discards on different paths

Error Recovery

Failure	Action
Test passes immediately	Delete. Rewrite to test specific uncovered behavior.
Coverage unchanged	Check coverage report line-by-line. May hit covered paths.
Unrelated test breaks	Revert. Check shared state or import side effects. Fix isolation.
Coverage plateaus	Switch to integration tests. Check for dead code inflating denominator.

TSV Logging

Append to .godmode/test-results.tsv: iteration\ttest_file\tlines_covered\tcoverage_before\tcoverage_after\tdelta\tstatus Status: kept, discarded, plateau.