code-to-tests

Analyze code and generate missing unit tests for public interfaces.

Updated Jun 21, 2025
One-click install
npx skills add https://github.com/grad13/cctop --skill code-to-tests
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: code-to-tests
Source: https://github.com/grad13/cctop/tree/main/.claude/skills/code-to-tests
Command: npx skills add https://github.com/grad13/cctop --skill code-to-tests

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the challenge of insufficient test coverage in codebases by automatically identifying, generating, and applying missing tests, ensuring code quality and reliability.

Core Features & Use Cases

  • Test Coverage Analysis: Analyzes code at both file and method levels to identify gaps in testing (covered, partial, missing files; L1/L2 untested/undertested methods).
  • Automated Test Generation: Generates missing test cases based on the code's public interface and existing test patterns.
  • Direct Test Application: Places generated tests directly into the appropriate code/*/tests/ directory.
  • Test Execution: Integrates with npm run test --workspaces to run generated and existing tests.
  • Use Case: A developer can use this skill to quickly bring a new feature up to a desired test coverage standard, reducing manual testing effort and improving confidence in code changes.

Quick Start

Use the code-to-tests skill to analyze and generate missing tests for the current codebase.

Frequently Asked Questions about code-to-tests

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate missing unit tests for an existing codebase?

Automated test generation analyzes code's public interfaces at file and method levels to identify coverage gaps and create missing unit tests in the code/*/tests/ directory. It classifies coverage as covered, partial, or missing to target test generation accurately.

What is the best way to identify untested or undertested methods in my code?

Analyzing method testability classifies methods as L1 untested or L2 undertested, while file coverage is categorized as covered, partial, or missing. This coverage analysis identifies exactly where unit tests are lacking across the codebase.

How do I run automatically generated unit tests in a workspace environment?

You run generated unit tests using the npm run test --workspaces command. The skill places new test files directly into the code/*/tests/ directory, allowing the workspace test runner to execute them seamlessly alongside existing tests.

Can I use this automated test generation for refactoring existing code?

Automated test generation supports refactoring by analyzing public interfaces and generating missing unit tests to improve coverage. Bringing new features or modified code up to a desired test coverage standard reduces manual effort and increases confidence in code changes.

Does automated unit test generation work with my existing test patterns?

Automated unit test generation analyzes existing test patterns alongside the code's public interface to create new test cases. Generated tests are placed directly into the code/*/tests/ directory to integrate with the current testing structure.