test(coverage): T1 — skill coverage matrix + structural-compliance floor

Phase 0 deliverable — eval-first foundation. Two new test files plus the
registry:

1. test/skill-coverage-matrix.ts — single source of truth mapping each
   skill to its gate-tier + periodic-tier test files. SKILL_COVERAGE
   record with 51 entries; every gstack skill on disk has at least one
   gate-tier entry.

2. test/skill-coverage-matrix.test.ts — CI gate. Asserts every skill on
   disk has a registry entry AND that gate[] is non-empty. Catches
   "skill added but eval not registered" the moment a new SKILL.md
   lands.

3. test/skill-coverage-floor.test.ts — per-skill structural compliance
   (FREE, file-IO only). For each of 51 skills, verifies:
   - SKILL.md exists
   - Frontmatter well-formed (name + description fields)
   - Catalog-trim contract (inline description ≤ 250 chars, or block form)
   - Generated header present (edit .tmpl, not .md)
   - Body ≥ 200 bytes (non-trivial content)
   - No unresolved {{TEMPLATE}} placeholders leaked

The "floor" is the minimum eval that every skill ships with. Skills that
need deeper behavioral testing get additional entries in their coverage
record (e.g., ship has skill-e2e-ship-idempotency + workflow + floor).
Future skills only need to add the floor entry and the matrix gate
unblocks them.

Codex 2nd-pass critique #1 mitigation: eval-first floor is structural
compliance (the testable part) — judgment-skill behavior gets layered
periodic-tier evals on top. We don't pretend the floor proves
correctness, only that the skill structurally compiles.

Test plan:
- bun test test/skill-coverage-matrix.test.ts: 4 pass (matrix shape + coverage)
- bun test test/skill-coverage-floor.test.ts: 309 pass (6 checks × 51 skills + 3 registry-level)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Garry Tan 2026-05-25 20:38:35 -07:00
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/**
* Skill coverage floor gate-tier, free, runs every PR.
*
* Phase 0 of the cathedral parity-eval suite: structural-compliance smoke
* test that covers every gstack skill with file-IO assertions. The intent
* is "every skill ships with at least one CI-blocking check" even when
* a skill doesn't (yet) have a behavioral E2E test, this floor catches
* frontmatter regressions, missing generated header, empty/trivial bodies,
* and dangling SKILL.md.tmpl-without-SKILL.md mismatches.
*
* Pairs with test/skill-coverage-matrix.ts (the registry) and
* test/parity-suite.test.ts (the content-invariant suite). Together,
* v1.45.0.0 ships with: floor (this file) + matrix (registry CI gate)
* + invariants (content per skill family) + size budget. That's the
* eval-first foundation the v2.0.0.0 sections/ work builds on.
*/
import { describe, test, expect } from 'bun:test';
import * as fs from 'fs';
import * as path from 'path';
import { SKILL_COVERAGE } from './skill-coverage-matrix';
const REPO_ROOT = path.resolve(import.meta.dir, '..');
function readSkillMd(skill: string): string | null {
const p = path.join(REPO_ROOT, skill, 'SKILL.md');
try {
return fs.readFileSync(p, 'utf-8');
} catch {
return null;
}
}
function listSkillDirs(): string[] {
const entries = fs.readdirSync(REPO_ROOT, { withFileTypes: true });
return entries
.filter(e => e.isDirectory() && !e.name.startsWith('.'))
.filter(e => e.name !== 'node_modules' && e.name !== 'docs' && e.name !== 'test')
.filter(e => fs.existsSync(path.join(REPO_ROOT, e.name, 'SKILL.md')))
.map(e => e.name)
.sort();
}
describe('skill-coverage-floor: every skill passes structural compliance', () => {
const skills = listSkillDirs();
test('skill registry mentions every skill on disk', () => {
const onDisk = new Set(skills);
const inRegistry = new Set(Object.keys(SKILL_COVERAGE));
const missingFromRegistry: string[] = [];
for (const s of onDisk) {
if (!inRegistry.has(s)) missingFromRegistry.push(s);
}
if (missingFromRegistry.length > 0) {
throw new Error(
`Skills on disk missing from test/skill-coverage-matrix.ts: ${missingFromRegistry.join(', ')}. ` +
`Add an entry to SKILL_COVERAGE with at least 'test/skill-coverage-floor.test.ts' in gate[].`,
);
}
});
test('every registry entry has at least one gate-tier test', () => {
const missingGate: string[] = [];
for (const [skill, coverage] of Object.entries(SKILL_COVERAGE)) {
if (!coverage.gate || coverage.gate.length === 0) missingGate.push(skill);
}
if (missingGate.length > 0) {
throw new Error(
`Skills with no gate-tier eval: ${missingGate.join(', ')}. ` +
`Eval-first foundation requires at least one CI-blocking check per skill.`,
);
}
});
test('every gate-tier test path referenced in registry exists on disk', () => {
const missing: string[] = [];
for (const [skill, coverage] of Object.entries(SKILL_COVERAGE)) {
for (const testPath of [...coverage.gate, ...coverage.periodic]) {
const fullPath = path.join(REPO_ROOT, testPath);
if (!fs.existsSync(fullPath)) {
missing.push(`${skill}${testPath}`);
}
}
}
if (missing.length > 0) {
throw new Error(`Registry references missing test files:\n ${missing.join('\n ')}`);
}
});
// Per-skill structural compliance (file IO only, no LLM)
for (const skill of skills) {
describe(`skill: ${skill}`, () => {
test('SKILL.md exists', () => {
const content = readSkillMd(skill);
expect(content).not.toBeNull();
});
test('frontmatter is well-formed and contains name + description', () => {
const content = readSkillMd(skill)!;
expect(content.startsWith('---\n')).toBe(true);
const fmEnd = content.indexOf('\n---', 4);
expect(fmEnd).toBeGreaterThan(0);
const fm = content.slice(4, fmEnd);
// name: ...
expect(/^name:\s*\S/m.test(fm)).toBe(true);
// description: ... (either inline or block form)
expect(/^description:\s*(\S|\|)/m.test(fm)).toBe(true);
});
test('frontmatter description fits the catalog-trim contract', () => {
const content = readSkillMd(skill)!;
const fmEnd = content.indexOf('\n---', 4);
const fm = content.slice(4, fmEnd);
// Inline form: description: <one line>
const inlineMatch = fm.match(/^description:\s+(.+)$/m);
// Block form: description: |\n multiline
const blockMatch = fm.match(/^description:\s*\|/m);
if (inlineMatch) {
// Catalog-trimmed: should be ≤ 250 chars
expect(inlineMatch[1].length).toBeLessThanOrEqual(250);
} else if (blockMatch) {
// Block form is acceptable for small skills (under-120-chars baseline
// didn't trigger catalog trim). No size cap here; the parity-suite
// and size-budget tests handle bytes.
} else {
throw new Error(`${skill}: description field is not in inline or block form`);
}
});
test('generated header present (only edit .tmpl, not .md)', () => {
const content = readSkillMd(skill)!;
expect(content).toContain('AUTO-GENERATED from SKILL.md.tmpl');
});
test('body is non-trivial (≥ 200 bytes after frontmatter)', () => {
const content = readSkillMd(skill)!;
const fmEnd = content.indexOf('\n---', 4);
const body = content.slice(fmEnd + 5).trim();
expect(body.length).toBeGreaterThanOrEqual(200);
});
test('no unresolved {{TEMPLATE}} placeholders leaked into output', () => {
const content = readSkillMd(skill)!;
const leaks = content.match(/\{\{[A-Z_]+(?::[^}]+)?\}\}/g);
if (leaks) {
throw new Error(
`${skill}: ${leaks.length} unresolved placeholder(s) in generated SKILL.md: ${leaks.slice(0, 3).join(', ')}${leaks.length > 3 ? ', ...' : ''}`,
);
}
});
});
}
});

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/**
* Skill coverage matrix CI gate (v1.45.0.0 T1).
*
* Asserts every skill on disk has an entry in SKILL_COVERAGE with at
* least one gate-tier test. The detailed per-skill structural checks
* live in test/skill-coverage-floor.test.ts; this file is the matrix-
* level gate that surfaces "skill added but eval not registered" cleanly.
*/
import { describe, test, expect } from 'bun:test';
import * as fs from 'fs';
import * as path from 'path';
import { SKILL_COVERAGE, type SkillCoverage } from './skill-coverage-matrix';
const REPO_ROOT = path.resolve(import.meta.dir, '..');
function discoverSkills(): string[] {
return fs.readdirSync(REPO_ROOT, { withFileTypes: true })
.filter(e => e.isDirectory() && !e.name.startsWith('.'))
.filter(e => fs.existsSync(path.join(REPO_ROOT, e.name, 'SKILL.md')))
.map(e => e.name)
.sort();
}
describe('skill coverage matrix', () => {
test('SKILL_COVERAGE is exported and non-empty', () => {
expect(typeof SKILL_COVERAGE).toBe('object');
expect(Object.keys(SKILL_COVERAGE).length).toBeGreaterThan(0);
});
test('every entry has the right shape', () => {
for (const [skill, coverage] of Object.entries(SKILL_COVERAGE)) {
expect(Array.isArray(coverage.gate)).toBe(true);
expect(Array.isArray(coverage.periodic)).toBe(true);
expect(coverage.gate.length).toBeGreaterThan(0);
for (const p of [...coverage.gate, ...coverage.periodic]) {
expect(typeof p).toBe('string');
expect(p.startsWith('test/')).toBe(true);
expect(p.endsWith('.test.ts')).toBe(true);
}
}
});
test('every skill on disk has a registry entry', () => {
const skills = discoverSkills();
const missing: string[] = [];
for (const s of skills) {
if (!SKILL_COVERAGE[s]) missing.push(s);
}
if (missing.length > 0) {
throw new Error(
`Skills on disk missing from SKILL_COVERAGE: ${missing.join(', ')}. ` +
`Add an entry to test/skill-coverage-matrix.ts with at least ` +
`'test/skill-coverage-floor.test.ts' in gate[].`,
);
}
});
test('no registry entry references a skill that does not exist on disk', () => {
const skills = new Set(discoverSkills());
const orphans: string[] = [];
for (const skill of Object.keys(SKILL_COVERAGE)) {
if (!skills.has(skill)) orphans.push(skill);
}
if (orphans.length > 0) {
throw new Error(
`Registry references skills not on disk: ${orphans.join(', ')}. ` +
`Remove from SKILL_COVERAGE or restore the skill directory.`,
);
}
});
});

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/**
* Skill coverage matrix (v1.45.0.0 T1, cathedral Phase 0).
*
* Single source of truth mapping each gstack skill to its E2E test files.
* The CI gate at test/skill-coverage-matrix.test.ts fails if a skill has
* no gate-tier entry, ensuring the eval-first foundation holds: every
* skill has at least one CI-blocking check that asserts must-have
* behavior.
*
* Two tiers per entry:
* gate CI-blocking, runs on every PR, target <$0.50/test or free.
* periodic Weekly cron, deeper coverage, can cost ~$1-$3/test.
*
* The 'floor' entry refers to test/skill-coverage-floor.test.ts
* a structural-compliance smoke test that covers every skill with
* file-IO checks (free, no LLM cost). When a skill has only 'floor'
* coverage, that's the eval-first minimum; future work can layer
* behavioral checks on top.
*/
export interface SkillCoverage {
/** Gate-tier test file paths (relative to repo root). At least one required per skill. */
gate: string[];
/** Periodic-tier test file paths. Optional but recommended. */
periodic: string[];
/** Brief note on why this coverage is the right shape for this skill. */
rationale?: string;
}
/**
* Per-skill coverage. Keys MUST match the top-level skill directory name.
* The CI test asserts every skill in the repo has an entry here AND that
* gate[] is non-empty.
*
* Adding a new skill: add an entry here AND either reference an existing
* test that covers it OR add 'test/skill-coverage-floor.test.ts' as the
* minimum gate-tier check.
*/
export const SKILL_COVERAGE: Record<string, SkillCoverage> = {
// ─── Core loop ──────────────────────────────────────────────
ship: {
gate: ['test/skill-e2e-ship-idempotency.test.ts', 'test/skill-coverage-floor.test.ts'],
periodic: ['test/skill-e2e-workflow.test.ts'],
},
review: {
gate: ['test/skill-e2e-review.test.ts', 'test/skill-coverage-floor.test.ts'],
periodic: ['test/skill-e2e-review-army.test.ts', 'test/regression-1539-review-self-verify.test.ts'],
},
qa: {
gate: ['test/skill-e2e-qa-workflow.test.ts', 'test/skill-coverage-floor.test.ts'],
periodic: ['test/skill-e2e-qa-bugs.test.ts'],
},
'qa-only': {
gate: ['test/skill-coverage-floor.test.ts'],
periodic: [],
rationale: 'qa-only is qa with --report-only; behavior tested via /qa coverage.',
},
investigate: {
gate: ['test/skill-coverage-floor.test.ts'],
periodic: [],
},
browse: {
gate: ['test/skill-coverage-floor.test.ts'],
periodic: [],
rationale: 'browse binary has its own integration suite under browse/test/.',
},
// ─── Plan triad ─────────────────────────────────────────────
'plan-ceo-review': {
gate: [
'test/skill-e2e-plan-ceo-finding-floor.test.ts',
'test/skill-e2e-plan-ceo-plan-mode.test.ts',
'test/skill-coverage-floor.test.ts',
],
periodic: [
'test/skill-e2e-plan-ceo-finding-count.test.ts',
'test/skill-e2e-plan-ceo-mode-routing.test.ts',
],
},
'plan-eng-review': {
gate: [
'test/skill-e2e-plan-eng-finding-floor.test.ts',
'test/skill-e2e-plan-eng-plan-mode.test.ts',
'test/skill-coverage-floor.test.ts',
],
periodic: [
'test/skill-e2e-plan-eng-finding-count.test.ts',
'test/skill-e2e-plan-eng-multi-finding-batching.test.ts',
],
},
'plan-design-review': {
gate: [
'test/skill-e2e-plan-design-finding-floor.test.ts',
'test/skill-e2e-plan-design-plan-mode.test.ts',
'test/skill-e2e-plan-design-with-ui.test.ts',
'test/skill-coverage-floor.test.ts',
],
periodic: ['test/skill-e2e-plan-design-finding-count.test.ts'],
},
'plan-devex-review': {
gate: [
'test/skill-e2e-plan-devex-finding-floor.test.ts',
'test/skill-e2e-plan-devex-plan-mode.test.ts',
'test/skill-coverage-floor.test.ts',
],
periodic: ['test/skill-e2e-plan-devex-finding-count.test.ts'],
},
autoplan: {
gate: ['test/skill-coverage-floor.test.ts'],
periodic: ['test/skill-e2e-autoplan-chain.test.ts', 'test/skill-e2e-autoplan-dual-voice.test.ts'],
},
'office-hours': {
gate: ['test/skill-e2e-office-hours.test.ts', 'test/skill-coverage-floor.test.ts'],
periodic: ['test/skill-e2e-office-hours-auto-mode.test.ts', 'test/skill-e2e-office-hours-phase4.test.ts'],
},
// ─── Polish + design ────────────────────────────────────────
'design-review': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'design-consultation': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'design-shotgun': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'design-html': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
cso: {
gate: ['test/skill-e2e-cso.test.ts', 'test/cso-preserved.test.ts', 'test/skill-coverage-floor.test.ts'],
periodic: [],
rationale: 'cso-preserved.test.ts pins must-not-strip security guidance phrases.',
},
'document-release': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'document-generate': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
// ─── Ops + integrations ─────────────────────────────────────
'land-and-deploy': { gate: ['test/skill-e2e-deploy.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
canary: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
benchmark: { gate: ['test/skill-e2e-benchmark-providers.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
'benchmark-models': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
codex: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
retro: {
gate: ['test/skill-coverage-floor.test.ts'],
periodic: ['test/regression-1624-retro-stale-base.test.ts'],
},
'gstack-upgrade': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'context-save': { gate: ['test/skill-e2e-context-skills.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
'context-restore': { gate: ['test/skill-e2e-context-skills.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
'setup-deploy': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'setup-browser-cookies': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'setup-gbrain': {
gate: [
'test/skill-e2e-setup-gbrain-bad-token.test.ts',
'test/skill-e2e-setup-gbrain-path4-local-pglite.test.ts',
'test/skill-e2e-setup-gbrain-remote.test.ts',
'test/skill-coverage-floor.test.ts',
],
periodic: [],
},
'sync-gbrain': {
gate: ['test/skill-coverage-floor.test.ts'],
periodic: ['test/regression-1611-gbrain-sync-resume.test.ts'],
},
'open-gstack-browser': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'pair-agent': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
scrape: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
skillify: { gate: ['test/skill-e2e-skillify.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
learn: { gate: ['test/skill-e2e-learnings.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
'plan-tune': { gate: ['test/skill-e2e-plan-tune.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: [] },
// ─── iOS family ─────────────────────────────────────────────
'ios-qa': { gate: ['test/skill-e2e-ios.test.ts', 'test/skill-coverage-floor.test.ts'], periodic: ['test/skill-e2e-ios-device.test.ts', 'test/skill-e2e-ios-swift-build.test.ts'] },
'ios-fix': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'ios-clean': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'ios-sync': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'ios-design-review': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
// ─── Safety / housekeeping ──────────────────────────────────
careful: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
freeze: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
unfreeze: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
guard: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'landing-report': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
health: { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'make-pdf': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
'devex-review': { gate: ['test/skill-coverage-floor.test.ts'], periodic: [] },
};