Skills testing-fundamentals
📦

testing-fundamentals

Content revision r1 Safe ⚙️ External commands

Review Testing Strategy and Test Quality

Poor test plans miss important behavior and create brittle suites. This skill helps Claude, Codex, and Claude Code review tests, choose frameworks, and focus coverage on valuable user flows.

Supports: Claude Codex Code(CC)
🥉 78 Bronze

Install with my Agent

Copy this request to your Agent. It includes the canonical Skill page and manifest.

Agent request
Review the Skillstore skill "testing-fundamentals" from https://skillstore.io/skills/danielpodolsky-testing-fundamentals.md and its manifest at https://skillstore.io/api/skills/danielpodolsky-testing-fundamentals/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.

Your Agent should still show its plan and request any confirmation required by the security policy.

Agent-readable resources

Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.

Markdown detail GET /skills/danielpodolsky-testing-fundamentals.md Signed manifest GET /api/skills/danielpodolsky-testing-fundamentals/manifest Signed lockfile GET /api/skills/danielpodolsky-testing-fundamentals/lockfile

Test it

Using "testing-fundamentals". Review a login form test suite that only checks successful login.

Expected outcome:

  • Calls out missing invalid password, network failure, and loading states.
  • Recommends behavior-focused assertions and one Playwright path for the critical login journey.

Using "testing-fundamentals". Create a test strategy for a Vite React checkout feature.

Expected outcome:

  • Suggests unit tests for price calculations and validation rules.
  • Adds integration tests for form submission and API error handling.
  • Limits E2E coverage to checkout success and payment failure paths.

Using "testing-fundamentals". Improve tests that use class selectors and large snapshots.

Expected outcome:

  • Replaces brittle selectors with role and label based queries.
  • Reduces snapshot use and asks for assertions tied to user-visible behavior.

Security Audit

Safe
v8 • 7/6/2026 Open versioned report

All static findings were adjudicated as false positives. The external command hits are Markdown fenced diagrams and testing examples, not executable code, and no prompt injection or malicious intent was found in SKILL.md.

1
Files scanned
219
Lines analyzed
0
Review items
0
False positives ignored

Risk Factors

⚙️ External commands (19)
SKILL.md:22-33 SKILL.md:33-85 SKILL.md:85-91 SKILL.md:91-95 SKILL.md:95-104 SKILL.md:104-108 SKILL.md:108-116 SKILL.md:116-120 SKILL.md:120-126 SKILL.md:126-130 SKILL.md:130-136 SKILL.md:136-154 SKILL.md:154-168 SKILL.md:168-188 SKILL.md:188-192 SKILL.md:192-195 SKILL.md:195-198 SKILL.md:198-204 SKILL.md:204-210
No confirmed security findings were detected by the latest completed static and semantic audit. This does not prove the skill has no side effects.
Audited by: codex View Audit History →
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Open versioned report
Security Assessment

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Academic citations (APA · BibTeX · CFF)

APA citation

DanielPodolsky. (2026). testing-fundamentals security audit report (audit version 8) [Author version unspecified]. Skillstore. https://skillstore.io/skills/danielpodolsky-testing-fundamentals/audits/8

BibTeX citation

@techreport{danielpodolsky-danielpodolsky-testing-fundamentals-2026, author = {DanielPodolsky}, title = {testing-fundamentals security audit report (audit version 8)}, institution = {Skillstore}, year = {2026}, number = {8}, url = {https://skillstore.io/skills/danielpodolsky-testing-fundamentals/audits/8}, note = {Author version unspecified} }

CITATION.cff

cff-version: 1.2.0 message: "If you use this Skill, cite its author and this versioned security audit report." title: "testing-fundamentals security audit report (audit version 8)" version: "unspecified" type: report authors: - name: "DanielPodolsky" date-released: "2026-07-06" url: "https://skillstore.io/skills/danielpodolsky-testing-fundamentals/audits/8" identifiers: - type: other value: "skillstore:danielpodolsky-testing-fundamentals:audit:8" description: "Skillstore immutable audit report identifier"

Skillstore Score

Why this score Evidence Confidence: High
55
Architecture
85
Maintainability
87
Content
71
Community
83
Spec Compliance

What You Can Build

Coach Test Planning

Guide junior developers through valuable test coverage, edge cases, and review questions.

Review Frontend Tests

Evaluate React tests for behavior focus, semantic queries, and balanced mocking.

Set Release Coverage

Choose high-value unit, integration, and E2E tests before shipping a feature.

Try These Prompts

Review a Test File 
Use testing-fundamentals to review this test file for behavior focus, brittle selectors, and missing edge cases.
Create a Coverage Plan 
Use testing-fundamentals to create a test plan for this feature. Separate unit, integration, and end-to-end coverage.
Improve Brittle Tests 
Use testing-fundamentals to improve this test suite. Reduce over-mocking and keep tests focused on user-visible behavior.
Audit Release Strategy 
Use testing-fundamentals to audit our testing strategy for this release. Identify coverage gaps, framework fit, and high-value E2E flows.

Best Practices

  • Prioritize tests that prove important user behavior and failure states.
  • Keep most coverage in fast unit tests, then add integration and E2E tests for key flows.
  • Mock external boundaries, but keep business logic and component behavior real when practical.

Avoid

  • Do not chase 100 percent coverage with low-value tests.
  • Do not test framework internals or third-party libraries.
  • Do not rely on CSS classes, large snapshots, or internal state for assertions.

Frequently Asked Questions

Which frameworks does this skill cover?
It covers Vitest, Jest, React Testing Library, Playwright, pytest, and go test at a strategy level.
Does this skill run tests automatically?
No. It provides testing guidance. Any test execution must be requested through the active coding tool.
Can it help with backend testing?
Yes. It includes general unit testing principles and mentions Node.js, Python, and Go testing tools.
Does it replace project-specific test conventions?
No. Use it with the existing framework, commands, naming rules, and team standards in the repository.
Can I use it with Claude, Codex, and Claude Code?
Yes. The marketplace metadata lists support for Claude, Codex, and Claude Code.
What kind of review does it perform best?
It works best for behavior-focused review, test pyramid balance, mocking choices, and missing edge cases.

Developer Details

License

MIT

Skillstore revision

r1

Version notice

The author did not declare a version.

Repository

https://github.com/DanielPodolsky/mentor-spec/tree/main/.claude/skills/fundamentals/testing

Ref

34f316ba14ef36c7a620fc09f2676d2429997a77

Maintenance freshness

7/18/2026

Usage

5 downloads · 258 views

File structure

📄 SKILL.md