coverage-booster

What This Skill Does

The coverage-booster skill is a powerful developer automation tool designed to bridge the gap between current test coverage and your project's quality requirements. It functions by analyzing your existing source code and cross-referencing it with current test files to identify "blind spots"—functions, conditional branches, and error-handling routines that lack corresponding unit tests. Once gaps are identified, the skill automatically generates syntactically correct, ready-to-run test files compatible with Jest or Vitest. By focusing on code complexity, it prioritizes the most critical and risky areas of your codebase, ensuring that your automated testing efforts provide the highest return on investment. It effectively automates the tedious boilerplate creation process, allowing developers to focus on architectural design and complex logic while maintaining a robust safety net.

Installation

Installation is handled through the OpenClaw plugin ecosystem. To add this tool to your workspace, run the following command in your terminal:

clawhub install openclaw/skills/skills/lxgicstudios/coverage-booster

No additional global dependencies or configuration files are required. The tool leverages npx, ensuring that you always have access to the latest version of the generator without manual updates.

Use Cases

This skill is perfect for scenarios where legacy codebases lack documentation or test coverage, making refactoring dangerous. It is also an excellent tool for CI/CD pipelines when coverage thresholds drop below team standards after rapid feature development. Furthermore, it is ideal for teams under pressure to hit strict code-quality metrics for impending release deadlines without the time to manually write hundreds of unit tests.

Example Prompts

1. "OpenClaw, please run the coverage-booster on the src/auth directory to identify missing test cases and generate the necessary files to improve our coverage."
2. "I need to bring our project's test coverage up from 50% to 80%. Use coverage-booster to scan the entire repository and target the most complex untested branches first."
3. "After my recent changes to the data-processing utility, our coverage dropped. Can you use coverage-booster to generate tests for the new error-handling logic I just implemented?"

Tips & Limitations

Always run your existing test suite before and after generating new tests to ensure no regressions were introduced. While the generated tests are high-quality, they should be treated as blueprints; verify that the mock data and assertions align with your specific domain logic. Note that this tool does not replace human oversight; it is an accelerator meant to handle the heavy lifting of boilerplate generation rather than an autonomous replacement for test-driven development.