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Javascript Testing Patterns

Checked
hermeticormus·vlatest·backend·MIT

Helps with JavaScript, testing, patterns as part of developing backend services and APIs workflows.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add ormus-solutions/libreuiux-claude-code --skill javascript-testing-patterns -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

hermeticormus

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Install target

Live repository

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No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

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  • Pinned to a commit: passed

    Scanned hermeticormus/libreuiux-claude-code at 2a69cbbc46.

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Commit
2a69cbbc46
Manifest
plugins/javascript-typescript/skills/javascript-testing-patterns/SKILL.md
Scanned
1 file, 990 lines
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About this skill

What it does

This skill provides guidance and code examples for applying common JavaScript testing patterns. It helps ensure robust, maintainable, and well-tested JavaScript codebases by leveraging established practices like mocking, stubbing, spies, and test doubles. The skill aims to improve the quality of automated tests and reduce debugging time.

When to use it

  • Refactoring Legacy Code: When updating older JavaScript projects with inconsistent or lacking tests.
  • Building New Features: To establish a strong testing foundation from the start for new components or modules.
  • Debugging Complex Issues: To isolate and reproduce bugs by creating targeted test cases using mocking and stubbing techniques.
  • Improving Test Coverage: When aiming to increase the percentage of code covered by automated tests.

Key capabilities

  • Mocking
  • Stubbing
  • Spies
  • Test Doubles

Example prompts

  • "Show me an example of using a mock function in Jest."
  • "How can I stub a database call for testing purposes?"
  • "Explain how spies are useful for verifying function calls during tests."

Tips & gotchas

This skill assumes basic familiarity with JavaScript and testing frameworks like Jest or Mocha. While it provides patterns, understanding the underlying principles of each technique is crucial for effective application.