karma-skill
karma-skill enables you to initialize and configure Karma, a powerful test runner that works across multiple browsers and testing frameworks. Automate your test environment setup and launcher configuration to accelerate testing cycles.
karma-skill helps you initialize and configure Karma, a powerful test runner that works across multiple browsers and testing frameworks. Start by running the karma init command to generate a karma.conf.js configuration file. This file defines your test framework (Angular, Jasmine, Mocha, or QUnit), browser launchers (Chrome, Firefox, etc.), and file patterns. karma-skill guides you through selecting your framework, specifying which browsers to test against, and configuring preprocessors for code coverage. Once initialized, you can run tests with karma start to begin your automated testing workflow.
AI-generated summary based on this skill's SKILL.md
Install
LambdaTest/agent-skills/karma-skill · repository language: Python
git clone https://github.com/LambdaTest/agent-skills
cp -r agent-skills/karma-skill ~/.claude/skills/karma-skillFrequently asked questions
AI-generated answers based on this skill's SKILL.md and metadata
How do I set up karma test runner for my JavaScript project?
karma-skill helps you initialize and configure Karma, a powerful test runner that works across multiple browsers and testing frameworks. Start by running the karma init command to generate a karma.conf.js configuration file. This file defines your test framework (Angular, Jasmine, Mocha, or QUnit), browser launchers (Chrome, Firefox, etc.), and file patterns. karma-skill guides you through selecting your framework, specifying which browsers to test against, and configuring preprocessors for code coverage. Once initialized, you can run tests with karma start to begin your automated testing workflow.
What does karma.conf.js configuration example look like and how do I customize it?
karma-skill enables you to create and customize your karma.conf.js file with essential settings. The configuration specifies your basePath (project root), files and exclude patterns for test discovery, frameworks (Jasmine, Mocha, QUnit), browser launchers (Chrome, Firefox), and reporters. karma-skill helps you set up preprocessors like coverage for code instrumentation, configure autowatch mode to re-run tests on file changes, and define custom launchers for specific browser configurations. You can also configure singleRun mode for CI/CD pipelines, set timeouts, and specify port numbers for your test server.
How can karma-skill help me integrate Karma with Angular, Jasmine, Mocha, or QUnit testing frameworks?
karma-skill streamlines framework integration by guiding you through selecting your preferred testing framework during initialization. For Angular projects, karma-skill configures Karma to work seamlessly with Angular's testing utilities and Jasmine by default. When setting up Jasmine, Mocha, or QUnit, karma-skill ensures the correct framework adapter is installed and configured in your karma.conf.js. The skill helps you configure framework-specific options, set up the appropriate test file patterns, and integrate preprocessors that work with your chosen framework. This unified approach lets you quickly establish a consistent testing environment regardless of which framework your project uses.
How do I run browser-based tests in CI/CD pipelines with karma single run and cloud testing services?
karma-skill enables you to configure Karma for CI/CD environments by setting singleRun to true in your karma.conf.js, which runs tests once and exits instead of watching for changes. For cloud testing services like LambdaTest, karma-skill helps you set up custom launchers that connect to remote browsers, allowing your tests to execute in the cloud without local browser installations. You configure the cloud service credentials, specify which browsers and operating systems to test against, and define launcher configurations that Karma uses to connect to those remote instances. This setup accelerates your CI/CD pipeline by parallelizing tests across multiple browser configurations and eliminating local environment dependencies.
How do I set up code coverage reporting and HTML reports for JavaScript tests with karma-skill?
karma-skill guides you through configuring the coverage reporter to generate detailed code coverage metrics for your JavaScript tests. You enable the coverage preprocessor in your karma.conf.js to instrument your source code, then specify coverage as a reporter to generate reports in multiple formats including HTML. karma-skill helps you set coverage thresholds to enforce minimum coverage percentages, configure the coverage reporter to output HTML reports you can view in a browser, and integrate coverage data into your CI/CD pipeline. The HTML reports provide line-by-line coverage visualization, making it easy to identify untested code paths and improve test quality.
What are the key steps for debugging and troubleshooting Karma test execution and configuration issues?
karma-skill assists with debugging by helping you enable autowatch mode to automatically re-run tests when files change, making it easier to iterate during development. When troubleshooting configuration issues, karma-skill helps you verify your karma.conf.js syntax, ensure all required dependencies are installed via npm, and check that your browser launchers are properly configured. The skill guides you through common issues like incorrect file paths in the basePath and files configuration, missing framework adapters, and launcher connectivity problems. You can also enable debug logging to see detailed information about test execution, file watching, and browser communication, helping you quickly identify and resolve configuration or runtime errors.
SKILL.md
rendered from the published skill — quoted content, verbatim
Karma Testing Skill
Core Patterns
karma.conf.js
```javascript module.exports = function(config) { config.set({ basePath: '', frameworks: ['jasmine'], files: [ 'src//*.js', 'test//.spec.js' ], preprocessors: { 'src//.js': ['coverage'] }, reporters: ['progress', 'coverage'], coverageReporter: { type: 'html', dir: 'coverage/' }, port: 9876, colors: true, logLevel: config.LOG_INFO, autoWatch: true, browsers: ['Chrome', 'Firefox'], singleRun: false, concurrency: Infinity,
// LambdaTest cloud browsers
customLaunchers: {
ChromeLT: {
base: 'WebDriver',
config: {
hostname: 'hub.lambdatest.com',
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karma-skill/SKILL.md
karma-skill/reference/advanced-patterns.md
karma-skill/reference/playbook.md