How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does tdd support?

tdd works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Yes. tdd is free to install and use. It is available from the open explainx.ai skill registry published by pproenca.

Where can I read ratings and reviews for tdd?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install tdd?

Run `npx skills add https://github.com/pproenca/dot-skills --skill tdd` in your terminal. You need to have run `npx skills init` once in your project first.

Productivity

tdd▌

pproenca/dot-skills · updated Apr 8, 2026

MDX-style export adds YAML metadata + attribution linking explainx.ai and this canonical listing URL.

$npx skills add https://github.com/pproenca/dot-skills --skill tdd

0 commentsdiscussion

summary

Comprehensive guide to Test-Driven Development practices, designed for AI agents and LLMs. Contains 42 rules across 8 categories, prioritized by impact to guide test writing, refactoring, and code generation.

skill.md

Community Test-Driven Development Best Practices

When to Apply

Reference these guidelines when:

Writing new tests using TDD workflow
Implementing the red-green-refactor cycle
Designing test structure and organization
Creating test data and fixtures
Reviewing or refactoring existing test suites

TDD Workflow

RED: Write a failing test that defines desired behavior
GREEN: Write minimal code to make the test pass
REFACTOR: Clean up code while keeping tests green
Repeat for each new behavior

Rule Categories by Priority

Priority	Category	Impact	Prefix
1	Red-Green-Refactor Cycle	CRITICAL	`cycle-`
2	Test Design Principles	CRITICAL	`design-`
3	Test Isolation & Dependencies	HIGH	`isolate-`
4	Test Data Management	HIGH	`data-`
5	Assertions & Verification	MEDIUM	`assert-`
6	Test Organization & Structure	MEDIUM	`org-`
7	Test Performance & Reliability	MEDIUM	`perf-`
8	Test Pyramid & Strategy	LOW	`strat-`

Quick Reference

1. Red-Green-Refactor Cycle (CRITICAL)

cycle-write-test-first - Write the Test Before the Implementation
cycle-minimal-code-to-pass - Write Only Enough Code to Pass the Test
cycle-refactor-after-green - Refactor Immediately After Green
cycle-verify-test-fails-first - Verify the Test Fails Before Writing Code
cycle-small-increments - Take Small Incremental Steps
cycle-maintain-test-list - Maintain a Test List

2. Test Design Principles (CRITICAL)

design-test-behavior-not-implementation - Test Behavior Not Implementation
design-one-assertion-per-test - One Logical Assertion Per Test
design-descriptive-test-names - Use Descriptive Test Names
design-aaa-pattern - Follow the Arrange-Act-Assert Pattern
design-test-edge-cases - Test Edge Cases and Boundaries
design-avoid-logic-in-tests - Avoid Logic in Tests

3. Test Isolation & Dependencies (HIGH)

isolate-mock-external-dependencies - Mock External Dependencies
isolate-no-shared-state - Avoid Shared Mutable State Between Tests
isolate-deterministic-tests - Write Deterministic Tests
isolate-prefer-stubs-over-mocks - Prefer Stubs Over Mocks for Queries
isolate-use-dependency-injection - Use Dependency Injection for Testability

4. Test Data Management (HIGH)

data-use-factories - Use Factories for Test Data Creation
data-minimal-setup - Keep Test Setup Minimal
data-avoid-mystery-guests - Avoid Mystery Guests
data-unique-identifiers - Use Unique Identifiers Per Test
data-builder-pattern - Use Builder Pattern for Complex Objects

5. Assertions & Verification (MEDIUM)

assert-specific-assertions - Use Specific Assertions
assert-error-messages - Assert on Error Messages and Types
assert-no-assertions-antipattern - Every Test Must Have Assertions
assert-custom-matchers - Create Custom Matchers for Domain Assertions
assert-snapshot-testing - Use Snapshot Testing Judiciously

6. Test Organization & Structure (MEDIUM)

org-group-by-behavior - Group Tests by Behavior Not Method
org-file-structure - Follow Consistent Test File Structure
org-setup-teardown - Use Setup and Teardown Hooks Appropriately
org-test-utilities - Extract Reusable Test Utilities
org-parameterized-tests - Use Parameterized Tests for Variations

7. Test Performance & Reliability (MEDIUM)

perf-fast-unit-tests - Keep Unit Tests Under 100ms
perf-avoid-network-calls - Eliminate Network Calls in Unit Tests
perf-fix-flaky-tests - Fix Flaky Tests Immediately
perf-parallelize-tests - Parallelize Independent Tests
perf-avoid-sleep - Avoid Arbitrary Sleep Calls

8. Test Pyramid & Strategy (LOW)

strat-test-pyramid - Follow the Test Pyramid
strat-mutation-testing - Use Mutation Testing to Validate Test Quality
strat-coverage-targets - Set Meaningful Coverage Targets
strat-integration-boundaries - Test Integration at Service Boundaries
strat-e2e-critical-paths - Limit E2E Tests to Critical User Paths

How to Use

Read individual reference files for detailed explanations and code examples:

Section definitions - Category structure and impact levels
Rule template - Template for adding new rules
cycle-write-test-first - Write the Test Before the Implementation
design-aaa-pattern - Follow the Arrange-Act-Assert Pattern

Related Skills

For Vitest framework specifics, see vitest skill
For API mocking with MSW, see msw skill

Full Compiled Document

For the complete guide with all rules expanded: AGENTS.md

how to use tdd

How to use tdd on Cursor

AI-first code editor with Composer

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

›Cursor installed and configured on your development machine
›Node.js version 16.0+ with npm package manager (verify with node --version)
›Active project directory or workspace where you want to add tdd

Execute installation command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills add https://github.com/pproenca/dot-skills --skill tdd

The skills CLI fetches tdd from GitHub repository pproenca/dot-skills and configures it for Cursor.

Select Cursor when prompted

The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:

◆ Which agents do you want to install to?

│

│ ── Universal (.agents/skills) ── always included ────

│ • Amp

│ • Antigravity

│ • Cline

│ • Codex

│ ●Cursor(selected)

│ • Cursor

│ • Windsurf

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/tdd

Reload or restart Cursor to activate tdd. Access the skill through slash commands (e.g., /tdd) or your agent's skill management interface.

⚠

Security & Verification Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.

Additional Resources

›View source code on GitHub ›Skills CLI documentation ›Learn more about Cursor ›What are agent skills?

List & Monetize Your Skill

Submit your Claude Code skill and start earning

GET_STARTED →

Use Cases▌

User Story & Requirements Generation

Create detailed user stories, acceptance criteria, and feature specs

Example

Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios

✓

Reduce spec writing time by 50%, ensure comprehensive coverage

Competitive Analysis

Research competitors, compare features, identify gaps

Example

Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities

✓

Complete competitive research in 2 hours instead of 2 days

Roadmap Prioritization

Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs

Example

Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale

✓

Make data-driven prioritization decisions faster

Stakeholder Communication

Draft PRDs, status updates, and stakeholder presentations

Example

Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement

✓

Save 3-5 hours/week on communication overhead

Implementation Guide▌

Prerequisites

›Claude Desktop or compatible AI client
›Access to product documentation and roadmap tools (Jira, Notion, etc.)
›Understanding of product management frameworks (RICE, Jobs-to-be-Done, etc.)
›Stakeholder contact information and communication channels

Time Estimate

30-60 minutes to see productivity improvements

Installation Steps

1.Install product management skill
2.Start with user story generation for known feature
3.Progress to competitive analysis: research 2-3 competitors
4.Use for roadmap prioritization: apply RICE/ICE scoring
5.Draft stakeholder communications and refine based on feedback
6.Build template library for recurring PM tasks
7.Share effective prompts with product team

Common Pitfalls

⚠Not validating competitive research—verify facts before sharing
⚠Accepting user stories without involving engineering team
⚠Over-relying on frameworks without qualitative judgment
⚠Not customizing outputs to company culture and communication style
⚠Skipping stakeholder validation of generated requirements

Best Practices▌

✓ Do

+Validate research and competitive analysis with real data
+Collaborate with engineering when generating technical requirements
+Customize frameworks and templates to your company context
+Use skill for first drafts, refine with stakeholder input
+Document successful prompt patterns for PM tasks
+Combine AI efficiency with human judgment and intuition

✗ Don't

−Don't publish competitive analysis without fact-checking
−Don't finalize user stories without engineering review
−Don't make prioritization decisions solely on AI scoring
−Don't skip customer validation of generated requirements
−Don't ignore company-specific context and culture

💡 Pro Tips

★Provide context: company goals, constraints, customer feedback
★Ask for alternatives: 'Show 3 ways to prioritize this roadmap'
★Request stakeholder-specific formatting: 'Executive summary vs. engineering spec'
★Use skill for 70% generation + 30% customization to company needs

When to Use This▌

✓ Use When

Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.

✗ Avoid When

Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.

Learning Path▌

1Basic: user stories, feature specs, status updates
2Intermediate: competitive analysis, prioritization frameworks, PRDs
3Advanced: product strategy, go-to-market planning, OKR setting
4Expert: product vision, market positioning, business model innovation

Discussion

Product Hunt–style comments (not star reviews)

No comments yet — start the thread.

general reviews

Ratings

4.5★★★★★32 reviews

★★★★★Dhruvi Jain· Dec 28, 2024
We added tdd from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
★★★★★Alexander Sethi· Dec 20, 2024
tdd fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
★★★★★Olivia Zhang· Dec 4, 2024
tdd is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
★★★★★Sofia Torres· Nov 23, 2024
tdd reduced setup friction for our internal harness; good balance of opinion and flexibility.
★★★★★Oshnikdeep· Nov 19, 2024
tdd fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
★★★★★Jin Jain· Nov 11, 2024
We added tdd from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
★★★★★Olivia Huang· Oct 14, 2024
I recommend tdd for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
★★★★★Ganesh Mohane· Oct 10, 2024
Registry listing for tdd matched our evaluation — installs cleanly and behaves as described in the markdown.
★★★★★Jin Ghosh· Oct 2, 2024
Solid pick for teams standardizing on skills: tdd is focused, and the summary matches what you get after install.
★★★★★Advait Haddad· Sep 13, 2024
We added tdd from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

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