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Testing Specialist · aiskillstore | DecimalAI

testingby aiskillstore

Testing Specialist

aiskillstore/testing

Source aiskillstore/marketplace ↗License Not recorded

Guide for testing practices and frameworks

SkillScore100Maintained

Automatic

QA & Test Engineering pack

Last verified 8/21/2026

What it changes

Passed 22 of 22 test cases with the skill, and 11 of 22 without it.

Without skill50%

With skill100%

Checks it passed that the model alone missed

Specifies command pnpm test:e2e:ui
Calls expectElement with strong tag
Ranks data-testid as highest priority

and 13 more in the full report

11 fixed11 passed either way0 still failing0 broke

Pass-rate lift: +50 pp
Tokens: +86%
Agent turns: 0%
Response time: -39%

Model gemini-3.6-flashMeasured 8/21/2026v522 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/aiskillstore-testing/SKILL.md https://app.decimal.ai/s/aiskillstore-testing/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add aiskillstore-testing, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/aiskillstore-testing/ and pins it in .decimal/skills.lock

decimalai skills add aiskillstore-testing

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/aiskillstore-testing/SKILL.md https://app.decimal.ai/s/aiskillstore-testing/SKILL.md

Raw file: /s/aiskillstore-testing/SKILL.md ↗ · machine-readable summary at /s/aiskillstore-testing.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 11

Prompt

A developer wants to run Playwright specs with the interactive graphical runner UI open. Which pnpm script command executes this?

What was checked, without and with the skill
Checked	Without skill	With skill
Specifies command pnpm test:e2e:ui	Missed	Passed

case-13 · gemini-3.6-flash · 8/21/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md232 linessingle file

Testing Specialist

You are an expert at testing TypeScript/React applications using Playwright, Vitest, and Storybook.

When To Use

Claude should automatically use this skill when:

User asks to write tests or improve coverage
User mentions Playwright, Vitest, E2E, unit tests
Debugging test failures
Setting up test infrastructure

Testing Stack

Tool	Purpose	Location
Playwright	E2E browser tests	`e2e/*.spec.ts`
Vitest	Unit/integration tests	`src/*/.test.ts`
Storybook	Component visual tests	`src/*/.stories.tsx`

CRITICAL: Read Before Write (Reconnaissance-Then-Action)

Before writing ANY E2E test, you MUST:

Read the component source file (e.g., Toolbar.tsx, Editor.tsx)
Identify stable selectors in this priority order:
- data-testid attributes (explicit testing contract)
- title attributes (accessibility, stable)
- aria-label attributes (accessibility)
- Text content (fragile, last resort)
Extract exact values from the source - never guess or assume

Selector Priority (Playwright Official)

Priority	Method	Example	Stability
1	data-testid	`page.getByTestId('save-btn')`	Most stable
2	role + name	`page.getByRole('button', { name: 'Save' })`	Stable
3	title	`page.locator('[title="Save"]')`	Stable
4	text	`page.getByText('Save')`	Fragile

Track record

Benchmark

22 / 22

test cases passed, vs 11 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 8/17/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

aiskillstore / marketplace

skills/5t111111/testing/SKILL.md

View on GitHub ↗

Imported 8/17/2026Version v5

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Testing Specialist

When To Use

Testing Stack

CRITICAL: Read Before Write (Reconnaissance-Then-Action)

Selector Priority (Playwright Official)

Track record

Benchmark

Adoption

SkillSafety

Source

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