AgentSkillsCN

testing-generator

自动从代码中生成全面的测试套件。通过分析代码结构，识别测试用例，生成单元测试、集成测试以及包含模拟策略的测试桩。支持 Jest/Vitest（JavaScript/TypeScript）、Pytest（Python）、Go 测试以及 PHPUnit。当您需要为函数、类、API 编写测试，或希望提升测试覆盖率时，可使用此技能。 触发词： “测试”、“单元测试”、“集成测试”、“测试覆盖率”、“模拟”、“测试桩”、“Jest”、“Pytest”、“Vitest”、“测试”

SKILL.md
--- frontmatter
name: testing-generator
description: |
  Automatically generates comprehensive test suites from code. Analyzes code structure to identify test cases, generates unit tests, integration tests, and test fixtures with mocking strategies. Supports Jest/Vitest (JavaScript/TypeScript), Pytest (Python), Go testing, and PHPUnit. Use this when you need tests for functions, classes, APIs, or when you want to improve test coverage.
  TRIGGERS: "test", "unit test", "integration test", "test coverage", "mock", "fixture", "Jest", "Pytest", "Vitest", "testing"

Testing Generator

Overview

This skill analyzes your source code and automatically generates comprehensive test suites tailored to your codebase. It identifies test cases, generates properly structured tests with mocking strategies, and suggests coverage improvements for multiple testing frameworks.

Workflow

The testing generation process follows these steps:

  1. •Analyze Code - Examine the source code structure, functions, classes, dependencies, and edge cases
  2. •Identify Test Cases - Determine what should be tested (happy paths, error states, boundary conditions)
  3. •Generate Tests - Create appropriate test files with setup, assertions, and cleanup
  4. •Add Test Utilities - Include mocks, stubs, and fixtures as needed
  5. •Suggest Improvements - Recommend coverage areas and testing strategies

Supported Frameworks

The skill generates tests for multiple languages and frameworks:

JavaScript/TypeScript

  • •Jest - Full-featured testing framework with built-in mocking
  • •Vitest - Modern Vite-native test runner
  • •Generated tests include: describe blocks, test cases, assertions, mocks, snapshots

Python

  • •Pytest - Flexible testing framework with fixtures
  • •Generated tests include: test functions, fixtures, parametrized tests, mocking with unittest.mock

Go

  • •Go testing package - Standard library testing
  • •Generated tests include: test functions, table-driven tests, helper functions

PHP

  • •PHPUnit - Standard PHP testing framework
  • •Generated tests include: test classes, assertions, setup/teardown, mocking with PHPUnit mocks

Test Types Generated

Unit Tests

  • •Individual functions or methods in isolation
  • •Mock external dependencies
  • •Test all code paths and edge cases
  • •Fast execution, no external resources needed

Integration Tests

  • •Multiple components working together
  • •Database interactions or API calls (mocked when appropriate)
  • •Setup and teardown procedures included
  • •Verify component interactions

E2E Test Scaffolds

  • •Test user workflows end-to-end
  • •Basic structure provided for you to fill in
  • •Suitable for UI testing frameworks (Cypress, Playwright, Selenium)

Test Data & Fixtures

  • •Sample data for testing
  • •Reusable fixture definitions
  • •Factory functions for test object creation
  • •Cleanup procedures

Test Generation Process

Step 1: Analyze Code

The skill examines:

  • •Function/method signatures and return types
  • •External dependencies and imports
  • •Error conditions and exceptions
  • •Class hierarchies and interfaces
  • •Async/await patterns

Step 2: Identify Test Cases

For each function/method:

  • •Happy path scenarios
  • •Error and exception handling
  • •Boundary conditions (null, undefined, empty, zero, negative)
  • •Input validation
  • •State changes
  • •Return value correctness

Step 3: Generate Tests

Creates test files with:

  • •Proper file naming conventions (test.js, _test.go, test.py, etc.)
  • •Clear test structure and organization
  • •Descriptive test names
  • •Setup and teardown
  • •Assertions and expectations

Step 4: Add Test Utilities

Includes when needed:

  • •Mock objects for external services
  • •Stub functions for dependencies
  • •Test fixtures and factory functions
  • •Helper utilities for common assertions

Step 5: Suggest Improvements

Recommends:

  • •Uncovered code paths
  • •Missing edge case tests
  • •Performance test opportunities
  • •Test organization improvements
  • •Coverage metrics to target

Usage Examples

JavaScript Function

Provide a JavaScript function and get:

  • •Jest test suite with describe/test blocks
  • •Mock implementations for external calls
  • •Parametrized tests for multiple inputs

Python Class

Provide a Python class and get:

  • •Pytest test class with test methods
  • •Fixtures for setup/teardown
  • •Parametrized test cases

Go Function

Provide a Go function and get:

  • •Table-driven tests
  • •Subtests for different scenarios
  • •Error case handling

Key Features

  • •Framework-Aware: Generates code matching your testing framework's conventions
  • •Edge Case Detection: Automatically identifies boundary conditions and error states
  • •Comprehensive Mocking: Creates appropriate mocks for dependencies
  • •Coverage-Focused: Suggests which code paths need testing
  • •Ready to Use: Generated tests are executable immediately
  • •Maintainable: Clear naming and organization for easy updates

References

This skill includes testing patterns and best practices in the references directory to guide test generation.