Mocking and stubbing are essential techniques for isolating units of code during testing by replacing dependencies with controlled test doubles. This enables fast, reliable, and focused unit tests that don't depend on external systems like databases, APIs, or file systems.
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
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
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
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
Submit your Claude Code skill and start earning
epx add aj-geddes/useful-ai-prompts --skill mocking-stubbingCompatible with
Supported agents
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionmocking-stubbingExecute the skills CLI command in your project's root directory to begin installation:
epx add aj-geddes/useful-ai-prompts --skill mocking-stubbingFetches mocking-stubbing from aj-geddes/useful-ai-prompts and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
.cursor/skills/mocking-stubbing
Restart Cursor to activate mocking-stubbing. Access via /mocking-stubbingin your agent's command palette.
Learn more:View source on GitHubSkills CLI docsAbout CursorWhat are agent skills?
Time estimate: 30-60 minutes to see productivity improvements
Prerequisites
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ 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.
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I recommend mocking-stubbing for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Useful defaults in mocking-stubbing — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
Solid pick for teams standardizing on skills: mocking-stubbing is focused, and the summary matches what you get after install.
Keeps context tight: mocking-stubbing is the kind of skill you can hand to a new teammate without a long onboarding doc.
Solid pick for teams standardizing on skills: mocking-stubbing is focused, and the summary matches what you get after install.
mocking-stubbing has been reliable in day-to-day use. Documentation quality is above average for community skills.
I recommend mocking-stubbing for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Registry listing for mocking-stubbing matched our evaluation — installs cleanly and behaves as described in the markdown.
Useful defaults in mocking-stubbing — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
We added mocking-stubbing from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
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