testing-audit

name	testing-audit
description	Audit React tests against Testing Library query priority and well-known React Testing Library pitfalls. Static-first with optional --with-run coverage enrichment and implementation plan.
trigger	/testing-audit

/testing-audit

Audit a TypeScript and React project's tests against an opinionated baseline organised in four layers — test runner and tooling, query priority and selector hygiene, interaction and async patterns, test design and coverage — preceded by a diagnostic snapshot. Then offer to generate an implementation plan for the gaps.

The default mental model is React component tests written with @testing-library/react, plus end-to-end tests in Playwright or Cypress. Vitest and Jest are both supported as the test runner. Mocha and other runners are out of scope.

How this differs from neighbouring audits

Concern	Owner
Whether tests run at every lifecycle stage (pre-commit, pre-push, continuous integration)	/quality-gates-audit
Whether eslint-plugin-testing-library and eslint-plugin-jest-dom are configured	/linting-audit
Whether tests catch errors well (error boundaries, async error paths)	/error-handling-audit
Whether the tests themselves are well-formed: query priority, async patterns, design, coverage	/testing-audit
End-to-end accessibility scans (axe in Playwright/Cypress)	/accessibility-audit
End-to-end performance measurement (Lighthouse CI)	/performance-audit

When a single fix passes multiple audits (for example, configuring eslint-plugin-testing-library satisfies both /linting-audit and /testing-audit), every relevant audit surfaces the same gap so the user sees it once and resolves it once.

Testing philosophy

This audit is opinionated. Three principles set the tone for everything below:

1. Test behaviour, not implementation. Assertions describe what the user perceives — what they see, click, type, hear, and read. Tests do not assert internal state shape, prop names, or specific function call sequences except where those are the public behaviour. The implementation plan's top-priority section addresses behaviour-vs-implementation drift before any other layer-4 work.
2. Snapshots are a smell. They almost always couple tests to implementation, churn on every harmless refactor, and rarely catch real regressions. Small, intentional, named snapshots are tolerable; large or whole-component snapshots are reported as violation. The skill's stated position is that snapshots are the exception, never the default.
3. Assert against semantic tokens, not utility classes. expect(button).toHaveClass('bg-primary') is resilient to design-system updates. expect(button).toHaveClass('bg-gray-100') breaks the moment the theme changes — and worse, it's testing what colour the button is rather than what the button is. Better still: assert on role, label, or text and skip the class assertion entirely.

These principles map directly to checks in Layer 4. They are not aspirations; they are how the audit grades.

The query priority ladder

Layer 2's checks grade tests against this canonical Testing Library priority. It is reproduced here verbatim so the audit's stance is unmistakable.

Priority 1 — Accessible to everyone (preferred):

1. getByRole — the most reliable; queries elements exposed in the accessibility tree. Use with the name option: getByRole('button', { name: /submit/i }).
2. getByLabelText — the right tool for form fields. Mirrors how users navigate forms.
3. getByPlaceholderText — when a label isn't available. A placeholder is not a substitute for a label.
4. getByText — for non-interactive elements; how users find content outside forms.
5. getByDisplayValue — useful for navigating pages with pre-filled form values.

Priority 2 — Semantic queries (variable user experience):

1. getByAltText — for elements supporting alt (img, area, input, custom elements).
2. getByTitle — least reliable in this tier; the title attribute is not consistently read by screen readers and is not visible by default for sighted users.

Priority 3 — Test IDs (last resort):

1. getByTestId — the user cannot see or hear these. Use only when semantic matching is not feasible.

A healthy test suite sits heavily in Priority 1. The audit measures the distribution and flags codebases that lean on Priority 3 or fall back to container.querySelector.

Static-first design with optional run enrichment

This skill is read-only. Two modes:

• Static (default). Read configuration files, source files, and test files. Pattern-detect query usage, async patterns, mocking shapes, structural test design, and styling-assertion hygiene.
• Static plus opt-in --with-run. Invoke the detected test runner in coverage mode (vitest run --coverage --reporter=json, jest --coverage --json) and parse the output. The coverage data feeds the diagnostic snapshot and enriches a small number of run-required checks (real coverage threshold verification, real test-count breakdown).

The skill never modifies any test, configuration, or source file, and never runs Playwright or Cypress end-to-end suites in --with-run. End-to-end runs serve real browsers and have side effects; that is a separate concern and the user's call.

Usage

/testing-audit                                    # default: concise Top 5 + full report saved + ask about plan
/testing-audit --worktree                          # create an isolated Git worktree, then run the audit there
/testing-audit --learn                            # mid-level engineer teaching mode (detailed explanations + file/line examples)
/testing-audit --teach                            # alias for --learn
/testing-audit --with-run                         # static plus enrichment from Vitest/Jest coverage run
/testing-audit --threshold-priority-one-ratio=80  # override default 70 (percent)
/testing-audit --threshold-testid-ratio=5         # override default 10 (percent, ceiling)
/testing-audit --threshold-by-role-ratio=60       # override default 50 (percent of Priority 1)
/testing-audit --threshold-user-event-ratio=90    # override default 80 (percent)
/testing-audit --threshold-snapshot-lines=50      # override default 100 (lines, ceiling for partial)

💡 Pro tip: Add --worktree to run this audit in an isolated Git worktree.

The skill never accepts --apply. The implementation plan is descriptive Markdown.

💡 Pro tip: Run /preflight --audit=testing first to detect — and optionally install — the development dependency that makes --with-run useful (vitest or jest, with their coverage configuration in place). Skip if you already know the tooling is wired up.

The opinionated baseline

A check resolves to one of four statuses:

• present — the invariant holds.
• partial — most signals resolve, with a small number of exceptions, or the codebase shows mixed adherence to a soft check.
• missing — a structural prerequisite is absent (no test runner installed, for example).
• violation — the audit identified concrete code that breaks the invariant.

Layer 0 is informational only and has no status.

Layer 0 — Diagnostic snapshot (always written, no pass/fail)

• Detected test runner: Vitest (with version), Jest (with version), or none.
• Detected component testing library: @testing-library/react, @testing-library/preact, none.
• Detected end-to-end framework: Playwright, Cypress, none.
• Test file count and total test count (test count requires --with-run).
• Query usage distribution across the priority ladder: counts and percentages per tier, with getByRole broken out specifically.
• userEvent vs fireEvent usage ratio.
• getByTestId and container.querySelector usage counts and the top files for each.
• Coverage data when --with-run: line, statement, branch, and function coverage.
• Flaky-pattern signal counts: fixed setTimeout/setInterval waits in tests, ordering-dependent test patterns, shared mutable test state.
• Snapshot test count and average snapshot size in lines.
• Components without any test file mapping to them (graph-aware when Graphify is present; falls back to per-folder heuristics otherwise).

Layer 1 — Test runner and tooling

Check	Expectation	Violation signal
Single test runner installed	Exactly one of Vitest or Jest in devDependencies.	Both present, with no clear migration.
@testing-library/react installed	When React is detected, the React Testing Library is in devDependencies.	Missing in a React project that ships tests.
@testing-library/user-event installed	Available for interaction simulation. The interaction-and-async layer prefers userEvent over fireEvent.	Missing.
@testing-library/jest-dom installed	Provides DOM-aware matchers (toBeInTheDocument, toBeDisabled, toHaveClass) so assertions can describe user-visible state rather than DOM-property internals.	Missing.
eslint-plugin-testing-library configured	The plugin is installed and enabled. (Overlap with /linting-audit; both surface so a single fix passes both.)	Plugin missing or not enabled.
eslint-plugin-jest-dom configured	The plugin is installed and enabled. (Overlap with /linting-audit.)	Plugin missing or not enabled.
jest-dom matchers loaded in setup file	The runner's setup file imports @testing-library/jest-dom.	No setup file, or setup file does not import jest-dom.
Coverage tool configured with thresholds	The test runner has a coverage configuration with explicit thresholds (line, statement, branch, function).	Coverage configured but thresholds absent, or no coverage configuration at all.
End-to-end framework present	Playwright or Cypress in devDependencies. Soft check — reported as partial for projects that legitimately may not need end-to-end tests.	Neither present in a user-facing application.

Layer 2 — Query priority and selector hygiene

This layer encodes the priority ladder and the most common selector-related pitfalls.

Check	Expectation	Violation signal
Query distribution favours Priority 1	At least the threshold percentage (default 70%; tunable via --threshold-priority-one-ratio) of all *By* queries are Priority 1 queries.	Distribution below the threshold.
getByTestId usage is rare	At most the threshold percentage (default 10%; tunable via --threshold-testid-ratio) of all queries use getByTestId.	Distribution above the threshold.
No container.querySelector for finding elements	Tests use Testing Library queries, not container.querySelector or document.querySelector.	querySelector calls in tests for element lookup.
Queries via screen, not destructured	Queries come from screen.getBy*, not destructured from the render return value. screen works everywhere and keeps debugging tools (screen.debug()) consistent.	const { getByRole } = render(...) patterns.
render return named view, not wrapper	When the render return is captured, it is named view (or destructured for what's needed). The render return is not wrapping anything; the wrapper name is a holdover from older testing libraries. Soft check — reported as partial.	const wrapper = render(...).
*ByRole is the dominant Priority 1 query	Of the Priority 1 queries, at least the threshold percentage (default 50%; tunable via --threshold-by-role-ratio) are getByRole (with the name option). Soft check — reported as partial.	Priority 1 use without meaningful getByRole adoption.
No redundant ARIA roles in test assertions	Tests do not assert on role attributes that are already implicit (<button role="button">). The principle is the same one applies to source: do not pile on accessibility attributes that the semantic element already provides.

Layer 3 — Interaction and async patterns

This layer encodes the well-known pitfalls in interaction style, async handling, and waitFor discipline.

Check	Expectation	Violation signal
userEvent preferred over fireEvent	At least the threshold percentage (default 80%; tunable via --threshold-user-event-ratio) of interaction calls use userEvent rather than fireEvent. userEvent simulates the full sequence of events a real user produces (focus, keydown, input, change), where fireEvent fires only one.	Ratio below the threshold.
find* used for elements not yet present	When waiting for an element to appear, tests use findBy*, not waitFor(() => getBy*()). findBy* already retries until a timeout and produces clearer error messages.	waitFor callbacks containing only a getBy* lookup.
query* only for absence assertions	queryBy* is used only with not.toBeInTheDocument() or analogous absence checks. queryBy* returns null instead of throwing, which is the only behaviour that makes "is this element absent?" assertable; using it for presence assertions can pass without proving presence.	queryBy* used in a positive-presence assertion.
waitFor callback contains a single assertion	Each waitFor call wraps exactly one expect. With several assertions in one callback, the first failure causes a re-run of all of them, slowing the suite and obscuring which one actually failed.	waitFor callbacks with multiple expect calls.
waitFor callback is not empty	waitFor(() => {}) followed by an assertion outside is wrong; the assertion belongs inside the callback so waitFor knows what it is waiting for.	Empty waitFor callbacks.
No side effects in waitFor	The waitFor callback contains only assertions — no fireEvent, userEvent, or other state mutation. re-runs its callback until it succeeds, so any side effect inside fires repeatedly.

Layer 4 — Test design and coverage

This layer encodes the testing philosophy stated above.

Check	Expectation	Violation signal
Tests describe user behaviour	Test names describe the user-visible behaviour (it('disables submit while saving', ...)), not the implementation (it('calls saveMutation when isLoading is true', ...)). Heuristic detection but a first-class principle of this audit; the implementation plan addresses drift here before any other layer-4 work. Soft check — reported as partial when adherence is mixed.	Test names that describe internal state changes rather than user-observable outcomes.
No assertions against hard-coded utility classes	Class assertions use semantic theme tokens (bg-primary, text-brand, border-destructive) — never raw utility classes (bg-gray-100, text-slate-500). Better still, assert on role, label, or text and skip the class assertion entirely. Reported as violation when raw utility classes appear in toHaveClass assertions.	expect(...).toHaveClass('bg-gray-100') (or any utility-class form: numeric Tailwind colour scales, raw spacing utilities like p-4, raw layout utilities like flex). The audit recognises a token via heuristic: a token has no numeric suffix and matches `[bg
Snapshots are bounded and intentional	Snapshot tests cover small, intentional, named outputs. Reported as violation when a snapshot exceeds the threshold lines (default 100; tunable via --threshold-snapshot-lines) OR when the snapshot is obviously implementation-coupled (whole-component output, internal-component-tree shape). Small, focused, named snapshots are reported as partial — the skill's stated position is that snapshots are a smell, but bounded ones can be defensible.	Auto-snapshots of full component output, snapshots larger than the threshold, or many snapshot tests in a single file (suggesting snapshot-as-default rather than considered choice).
Coverage thresholds enforced in continuous integration	The continuous-integration test step is configured to fail when coverage drops below the configured threshold. Soft check — reported as partial if thresholds exist but are not enforced.	Coverage configured but continuous integration does not fail on regression.
Critical-path end-to-end coverage

What this skill does

1. Reads the knowledge graph when present. Soft dependency: when graphify-out/graph.json exists, the audit cross-references graph nodes against test-file imports to identify components with no test, and ranks coverage gaps by graph centrality. Without the graph, the check falls back to per-folder heuristics with reduced precision.

2. Confirms a TypeScript and React project. Detects package.json, tsconfig.json, and react in dependencies. When TypeScript or React is absent, it writes a canonical not-applicable audit with every catalog check present once, explicitly not-applicable/not-evaluated, and a null status.

3. Detects the test runner, component testing library, and end-to-end framework for the diagnostic snapshot and for layer-1 and layer-4 checks.

4. When --with-run is set, invokes the detected unit-test runner in coverage mode (vitest run --coverage --reporter=json or jest --coverage --json), captures the JSON output, and folds it into the snapshot. Never runs Playwright or Cypress.

5. Walks every test file to compute the diagnostic distributions (query priority breakdown, userEvent/fireEvent ratio, getByTestId count, container.querySelector count, snapshot count and sizes, flaky-pattern signal counts).

6. Writes Layer 0 — the diagnostic snapshot to .architect-audits/testing-audit/snapshot.md and prepends the same content to findings.md.

7. Walks each check in the active layer list, applying any --include, --exclude, and threshold overrides. Records a status, evidence, and (where relevant) sample file references per check.

8. Writes phase 1 outputs to .architect-audits/testing-audit/:

   • findings.md — diagnostic snapshot followed by check results, grouped by layer.
   • findings.json — machine-readable.
   • snapshot.md — diagnostic snapshot on its own.
   • metadata.json — skill version, run timestamp, Graphify revision (when present), test runner and version, end-to-end framework, applied thresholds, applied filters, run-mode flag.

Implementation steps

Step 1 — Confirm the prerequisites

test -f package.json || { echo "testing-audit: no package.json detected; change directory to the project root."; exit 1; }

Confirm TypeScript and React (react directly or via Next.js, Remix, etc.). When either domain prerequisite is absent, do not omit the audit: write all four canonical output files, set auditApplicability.status to not-applicable, use a stable reason such as typescript-react-project-not-detected, and emit every checks.json entry once as not-applicable/not-evaluated with status: null.

Step 2 — Detect the test runner and surrounding tools

Read package.json devDependencies:

• vitest → Vitest. Resolve version from the lockfile.
• jest → Jest. Resolve version from the lockfile.
• Both → record both, run the audit against whichever has a configuration file. The "single test runner" check reports violation.
• Neither → continue. Mark the test-runner foundation check missing; mark only runner-dependent execution and coverage checks applicable but not-evaluated with reason test-runner-not-detected; continue evaluating source-level test-design checks when test files exist. Recommend Vitest or Jest in the findings.

Detect @testing-library/react, @testing-library/user-event, @testing-library/jest-dom, eslint-plugin-testing-library, eslint-plugin-jest-dom, playwright, @playwright/test, cypress.

Step 3 — Optionally run the test runner

When --with-run is set, invoke the detected runner:

• Vitest: npx vitest run --coverage --reporter=json (capture stdout, parse JSON).
• Jest: npx jest --coverage --json (capture stdout, parse JSON).

If the runner fails to start (binary missing, configuration invalid), record the failure, print to the chat and prepend to findings.md: "--with-run was requested but the test runner is not installed. Run /preflight --audit=testing --install to install vitest or jest, then re-run this audit. The static analysis has been completed; only the run-dependent enrichment degraded to partial." Record recoveryHint: "/preflight --audit=testing --install" on each run-dependent check that degraded in findings.json. Continue. Run-dependent enrichment of the diagnostic snapshot and a small number of coverage-related checks degrades to partial.

Step 4 — Walk the test files

Enumerate test files. Detection patterns:

• File names matching *.test.ts, *.test.tsx, *.spec.ts, *.spec.tsx.
• Files inside __tests__/ directories.
• Files declared by the runner's configuration include patterns.

For each file, collect:

• Query call counts per priority tier and per query name.
• userEvent and fireEvent call counts.
• container.querySelector and document.querySelector call counts.
• screen adoption (do queries come from screen or from a destructured render return).
• wrapper-named render returns.
• Snapshot counts and sizes.
• waitFor patterns (callback contents, assertion counts, side effects).
• act wrappings.
• cleanup imports and calls.
• Test names (for the behaviour-vs-implementation heuristic).
• Class assertions (toHaveClass) — categorise as semantic-token or raw-utility-class via the heuristic above.
• Mock targets (module-boundary vs internal).
• Flaky-pattern signals (fixed waits, ordering dependencies, shared mutable state).

Step 5 — Build the diagnostic snapshot

Aggregate the per-file data into the items listed in Layer 0. Write snapshot.md and prepend the same content to findings.md.

Step 6 — Resolve each check

For each check in the active layer list, walk its detection logic. Threshold-bearing checks compare the aggregate to the configured threshold. Heuristic checks (behaviour-vs-implementation, mocking-at-boundaries) report partial rather than violation even when adherence is poor, because the heuristics are imperfect.

For each check, record evidence and up to ten representative samples plus a total count.

Step 7 — Write phase 1 outputs

Create .architect-audits/testing-audit/ if needed. Write findings.md, findings.json, snapshot.md, metadata.json. Overwrite previous runs of these four; preserve implementation-plan.md unless the user agrees to regenerate it.

Step 8 — Print the concise chat summary and offer phase 2

Print a human-first, scannable summary in the chat. Do not print the full layered findings — those are written to disk in Step 7. The chat output has exactly this shape:

1. Short header — audit name, timestamp, and a one-line summary of the codebase state.
2. Top 5 Highest-Leverage Recommendations — ordered by architectural principles: test philosophy, maintainability, risk reduction, velocity, long-term health. For fewer than five findings, print what exists. For each recommendation (numbered 1–5):
   • Title (one clear line).
   • Why it matters (explain the principle in 1–2 sentences).
   • Real consequences if ignored (honest downside for the team or project).
   • Smallest high-leverage fix (exact next step, effort level, and which files to touch).
   • At the end, add a lettered sub-list of concrete actions if useful (e.g. 2a, 2b) so the user can reply with "2b" or "1 and 3" to trigger implementation.
3. Bottom line: Full detailed audit report (layered findings, snapshot, metadata, implementation plan) → .architect-audits/testing-audit/findings.md

When --learn or --teach is set, expand each recommendation into mid-level engineer teaching mode:

• For every item, explain as if teaching a mid-level engineer, pointing to specific files and line numbers from the current codebase.
• Use educational language: "Here's why this pattern bites teams in the long run…", "This is the exact mistake I see in most codebases at your stage…", "The fix is small but pays off huge because…".
• Include a short "What you'll learn from fixing this" section for each recommendation.
• Keep the numbered/lettered structure so the user can still reply with "2b" or "1 and 3".
• End with the same bottom-line link to the full report.

After printing, ask the single yes-or-no question: "Generate an implementation plan for the gaps identified above? (yes/no)" Do not proceed to phase 2 without an explicit affirmative.

Step 9 — Phase 2: generate the implementation plan

When the user agrees, build implementation-plan.md, ordered by testing-philosophy impact:

1. Header — repository name, baseline version, test runner, end-to-end framework, timestamp, total counts per layer.
2. Behaviour-over-implementation fixes — rewrites of test names and assertions that test internal state instead of user behaviour.
3. Snapshot cleanup — oversized or implementation-coupled snapshots to remove or replace with explicit assertions; bounded snapshots to keep and rationalise.
4. Utility-class-assertion replacements — every toHaveClass('bg-gray-100') (and similar) replaced with semantic-token assertions or, where possible, role/label/text assertions.
5. Query-priority migrations — getByTestId and container.querySelector sites rewritten in priority order: try getByRole first, then getByLabelText, then text-based queries.
6. Async-pattern fixes — waitFor discipline, find* adoption, query* confined to absence checks, act and cleanup cleanups.
7. Tooling fixes — missing testing-library packages, jest-dom matcher loading, eslint plugin configuration.
8. Coverage and end-to-end fixes — coverage threshold introduction, end-to-end framework adoption when missing, components-without-tests gap closure prioritised by graph centrality when Graphify is present.
9. Closing checklist — flat checkbox list mirroring the gaps, suitable for pasting into a pull-request description.

The plan is descriptive, not executable. It does not edit tests, install packages, or modify configuration.

Repository Quality Score findings contract

findings.json is the scoring source and MUST use schema 2.0.0. Emit the top-level fields schemaVersion, runIdentifier, skillName, skillVersion, checkCatalogSchemaVersion, checkCatalogVersion, runStartedAt, runFinishedAt, target, execution, and checks. target records the repository, exact Git commit, and whether the audited source tree was clean. execution records filtersApplied, filterArguments, threshold and policy overrides, enrichmentArguments, and graph availability.

Emit every entry from checks.json exactly once and use its full checkId and layer. Each result records applicability, evaluationState, evidenceQuality, classification, canonical status, and evidence. A check that does not apply is not-applicable/not-evaluated with a null status. A filtered or otherwise unresolved applicable check is applicable/not-evaluated with a null status; never guess a pass or failure. metadata.json repeats the common run, target, catalog, and execution identity. The complete contract is .agents/AUDIT_FINDINGS_CONTRACT.md in the playbook repository.

Findings file shape

findings.json (the example shows one representative check; emitted output contains every catalog check exactly once):

{
  "schemaVersion": "2.0.0",
  "runIdentifier": "<uuid>",
  "skillName": "testing-audit",
  "skillVersion": "1.0.0",
  "checkCatalogSchemaVersion": "1.1.0",
  "checkCatalogVersion": "1.0.0",
  "target": { "repository": "example", "gitCommit": "<full-commit-sha>", "sourceWorkingTreeClean": true },
  "execution": { "filtersApplied": false, "filterArguments": [], "thresholdOverrides": {}, "policyOverrides": {}, "enrichmentArguments": [], "graphAvailable": true },
  "runStartedAt": "2026-04-26T13:47:00Z",
  "runFinishedAt": "2026-04-26T13:47:14Z",
  "testRunner": { "name": "vitest", "version": "1.6.0" },
  "endToEndFramework": "playwright",
  "withRun": true,
  "thresholds": {
    "priorityOneRatio": 70,
    "testidRatio": 10,
    "byRoleRatio": 50,
    "userEventRatio": 80,
    "snapshotLines": 100
  },
  "snapshot": {
    "testFileCount": 187,
    "testCount": 624,
    "queryDistribution": {
      "priorityOne": { "ratio": 0.78, "byRole": 0.62, "byLabelText": 0.09, "byPlaceholderText": 0.02, "byText": 0.04, "byDisplayValue": 0.01 },
      "priorityTwo": { "ratio": 0.05, "byAltText": 0.04, "byTitle": 0.01 },
      "priorityThree": { "ratio": 0.17, "byTestId": 0.17 }
    },
    "userEventRatio": 0.71,
    "containerQuerySelectorCount": 14,
    "snapshots": { "count": 22, "averageLines": 142, "oversized": 9 },
    "componentsWithoutTests": 31,
    "coverage": { "lines": 0.74, "statements": 0.73, "branches": 0.61, "functions": 0.78 },
    "flakyPatternSignals": { "fixedWaits": 6, "orderingDependent": 0, "sharedMutableState": 2 }
  },
  "summary": {
    "testRunnerAndTooling":             { "present": 6, "partial": 1, "missing": 1, "violation": 1 },
    "queryPriorityAndSelectorHygiene":  { "present": 4, "partial": 2, "missing": 0, "violation": 1 },
    "interactionAndAsyncPatterns":      { "present": 5, "partial": 1, "missing": 0, "violation": 3 },
    "testDesignAndCoverage":            { "present": 2, "partial": 3, "missing": 0, "violation": 3 }
  },
  "checks": [
    {
      "layer": "test-design-and-coverage",
      "checkId": "testing-audit.no-hard-coded-utility-class-assertions",
      "applicability": "applicable",
      "applicabilityReason": null,
      "evaluationState": "evaluated",
      "evaluationReason": null,
      "evidenceQuality": "complete",
      "classification": "brittle-assertion",
      "status": "violation",
      "evidence": [],
      "samples": [
        { "path": "src/components/Button.test.tsx", "line": 28, "match": "expect(button).toHaveClass('bg-gray-100')" },
        { "path": "src/components/Card.test.tsx", "line": 41, "match": "expect(card).toHaveClass('p-4 text-slate-500')" }
      ],
      "totalCount": 17,
      "expectation": "Class assertions use semantic theme tokens (bg-primary, text-brand) — never raw utility classes. Better still, assert on role, label, or text.",
      "gap": "17 toHaveClass assertions reference raw Tailwind utility classes that will break on theme changes.",
      "remediation": "Replace utility-class assertions with semantic-token assertions (bg-primary, text-destructive) or, preferably, with role/label/text assertions that describe the user-visible behaviour."
    }
  ]
}

findings.md mirrors the same content in human-readable form, with the diagnostic snapshot at the top and one section per check, grouped by layer. snapshot.md contains only the snapshot. metadata.json carries skill identity, timestamps, Graphify revision (when present), the test runner and version, the end-to-end framework, applied thresholds, applied filters, and the withRun flag plus any captured exit-status from the runner.

Idempotency rules

• Re-running with no flags overwrites findings.md, findings.json, snapshot.md, and metadata.json in place.
• implementation-plan.md is preserved across runs unless the user agrees to regenerate it.
• Filter flags, threshold overrides, and the --with-run flag are recorded in metadata.json so a partial run can be reproduced.
• Run-derived data (coverage, real test count) is timestamp-tagged in metadata; staleness is the user's responsibility to manage by re-running.

Failure modes and remediation

Symptom	Cause	Fix
no package.json detected	The skill is run outside a Node.js project root.	Change directory into the project root and re-run.
no tsconfig.json detected	JavaScript-only project.	Write a canonical not-applicable audit result with every catalog check present once and a null status.
React not detected	The project does not depend on react directly or via a meta-framework.	Write the same canonical not-applicable audit result; do not silently omit testing from RQS coverage.
Neither Vitest nor Jest installed	The project has no recognised test runner.	Continue. Record the runner foundation check as missing, runner-dependent checks as applicable but not-evaluated, and evaluate independent source checks. Recommend /quality-gates-audit and Vitest or Jest.
Both Vitest and Jest installed	Mid-migration or accidental dual install.	Continue. Run the audit against whichever has a configuration file. Surface dual-installation as a violation on the layer 1 "single test runner" check.
--with-run set but runner fails to start	Binary missing, configuration invalid, monorepo path-resolution issue.	Record the failure and the captured stderr in metadata. Run-dependent checks degrade to partial. Continue with the static analysis. Recovery: run /preflight --audit=testing --install to install vitest or jest, then re-run with --with-run.
Test files exist but match no recognised pattern	Custom test file naming.	Run with the patterns declared in the runner configuration. When that fails, fall back to scanning files that import @testing-library/react.
Knowledge graph missing	/pre-audit-setup has not been run.	Continue. Record noGraphify: true in metadata. The components-without-tests check falls back to per-folder heuristics; the implementation plan loses centrality-based prioritisation.
Snapshot files exceed the threshold but were intentionally bounded by the author

What this skill explicitly does NOT do

• Modify any test, configuration file, or source file.
• Run Playwright, Cypress, or any other end-to-end test runner. End-to-end runs serve real browsers and have side effects.
• Install any package or dependency.
• Open pull requests or commit anything to git.
• Audit JavaScript-only projects.
• Audit non-React frontends. The query-priority and interaction layers use React Testing Library conventions; Vue Testing Library and others are out of scope.
• Audit Mocha, AVA, Tap, or Node's built-in test runner. Vitest and Jest are the only supported runners.
• Audit utility-first CSS itself. Tailwind, UnoCSS, and similar frameworks are perfectly fine in components — the audit's only stance on utility classes is in test assertions, where they make tests brittle. Component code is /architecture-audit's and /react-audit's domain.
• Replace human review of nuanced test design decisions. The audit catches structural patterns; trade-offs like "should this be a unit test or an integration test" still require judgement.

References

• Testing Library, About Queries — Priority — the canonical source for the priority ladder.