intent-solutions-io/Generating Test Doubles
010-archive/backups-20251108/plugin-enhancements/plugin-backups/test-doubles-generator_20251020_005635/skills/skill-adapter/SKILL.md
This skill uses the test-doubles-generator plugin to automatically create mocks, stubs, spies, and fakes for unit testing. It analyzes dependencies in the code and generates appropriate test doubles based on the chosen testing framework, such as Jest, Sinon, or others. Use this skill when you need to generate test doubles, mocks, stubs, spies, or fakes to isolate units of code during testing. Trigger this skill by requesting test double generation or using the `/gen-doubles` or `/gd` command.
$ install --global
skillsauthnpx skillsauth add intent-solutions-io/plugins-nixtla Generating Test DoublesInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 5, 2026, 11:46 PM4.7s4 files scanned
SKILL.md
- name:
- Generating Test Doubles
- description:
- |
Overview
This skill empowers Claude to streamline unit testing by automatically generating test doubles (mocks, stubs, spies, and fakes). It analyzes the code under test, identifies dependencies, and creates the necessary test doubles, significantly reducing the time and effort required to write effective unit tests.
How It Works
- Dependency Analysis: Claude analyzes the code to identify dependencies that need to be replaced with test doubles.
- Test Double Generation: Based on the dependencies and specified testing framework, Claude generates appropriate test doubles (mocks, stubs, spies, or fakes).
- Code Insertion: Claude provides the generated test double code, ready for integration into your unit tests.
When to Use This Skill
This skill activates when you need to:
- Create mocks for external API calls in a unit test.
- Generate stubs for service dependencies to control their behavior.
- Implement spies to track interactions with real objects during testing.
Examples
Example 1: Generating Mocks for API Calls
User request: "Generate mocks for the fetchData function in dataService.js using Jest."
The skill will:
- Analyze the
dataService.jsfile to identify thefetchDatafunction and its dependencies. - Generate a Jest mock for
fetchData, allowing you to simulate API responses.
Example 2: Creating Stubs for Service Dependencies
User request: "Create stubs for the NotificationService in userService.js using Sinon."
The skill will:
- Analyze
userService.jsand identify theNotificationServicedependency. - Generate a Sinon stub for
NotificationService, enabling you to control its behavior during testing ofuserService.js.
Best Practices
- Framework Selection: Specify the testing framework you are using (e.g., Jest, Sinon) for optimal test double generation.
- Code Context: Provide the relevant code snippets or file paths to ensure accurate dependency analysis.
- Test Double Type: Consider the purpose of the test double. Use mocks for behavior verification, stubs for controlled responses, and spies for interaction tracking.
Integration
This skill integrates directly with your codebase by providing generated test double code snippets that can be easily copied and pasted into your unit tests. It supports popular testing frameworks and enhances the overall testing workflow.
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