Individual skill

generating-test-doubles

Generate mocks, stubs, spies, and fakes for dependency isolation. Use when creating mocks, stubs, or test isolation fixtures. Trigger with phrases like "generate mocks", "create test doubles", or "setup stubs".

skills/.curated/generating-test-doubles/SKILL.md

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# Test Doubles Generator

## Overview

Generate mocks, stubs, spies, and fakes to isolate units under test from external dependencies. Supports Jest mocks, Sinon.js stubs, Python unittest.mock, Go interfaces, and testdouble.js patterns.

## Prerequisites

- Testing framework installed (Jest, Vitest, Mocha, pytest, JUnit 5, or Go testing)
- Mocking library available (Sinon.js, testdouble.js, unittest.mock, Mockito, or gomock)
- TypeScript `strict` mode enabled for type-safe mocks (if applicable)
- Source code with clear interface or class boundaries for dependency injection

## Instructions
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