Test Doubles Generator

Generate mocks, stubs, spies, and fakes for unit testing with Jest, Sinon, and test frameworks.

Installation

/plugin install test-doubles-generator@claude-code-plugins-plus

Usage

/gen-doubles
# or shortcut
/gd

Features

• Smart Analysis: Identifies dependencies and recommends appropriate test double type
• Multi-Framework: Jest, Sinon, unittest.mock, Mockito, Moq, RSpec
• Complete Examples: Includes test cases demonstrating usage
• Test Fixtures: Generate realistic test data
• Best Practices: Follows testing framework conventions

Example Workflow

# Generate test doubles for a component
/gen-doubles

# Claude analyzes dependencies and generates:
#  Mock implementations for APIs
#  Stub implementations for services
#  Spy wrappers for real objects
#  Test fixtures and example tests

Test Double Types

• Mock: Behavior verification with call tracking
• Stub: Predefined responses for dependencies
• Spy: Wrap real implementations with tracking
• Fake: Working simplified implementations
• Dummy: Placeholder objects

Files

• commands/gen-doubles.md - Test doubles generation command

License

MIT