Generating Test Doubles
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.
Install
/plugin marketplace add jeremylongshore/claude-code-plugins-plus-skills
/plugin install test-doubles-generator@claude-code-plugins-plusRun these inside Claude Code. The skill comes with its plugin.
What this skill does
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.
How it works
- 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 it
- 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.
Best practices
- 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.
Details
- Skill name
generating-test-doubles- Plugin
- test-doubles-generator
FAQ
What does the Generating Test Doubles skill do?
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.
How do I install the Generating Test Doubles skill?
Claude Code plugin: /plugin marketplace add jeremylongshore/claude-code-plugins-plus-skills then /plugin install test-doubles-generator@claude-code-plugins-plus. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.
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