Quick Answer: How do I run a karma config file?

How do I run Karma config?

js configuration file. For example, to run or debug tests in Headless Chrome, type –browsers ChromeHeadless in the Karma options field. See Automated testing with Headless Chrome for details. To see all the available CLI options, type karma start –help in the Terminal Alt+F12 .

What is karma config js file?

The Karma configuration file can be written in JavaScript or CoffeeScript and is loaded as a regular Node. js module. Within the configuration file, the configuration code is put together by setting module. exports to point to a function which accepts one argument: the configuration object. // an example karma.

How do I run a karma conf in JavaScript?


  1. npm install -g karma-cli.
  2. npm install phantomjs -g – an emulator for testing javascript code.
  3. npm install karma-jasmine karma-chrome-launcher karma-phantomjs-launcher –save – karma-plugins for running tests written in Jasmine, for running them in Chrome and PhantomJS browsers.

How do I create a karma configuration file?

Generating the config file. The configuration file can be generated using karma init : $ karma init my. conf.

How do I change karma version?

In changing the version manually in package. json you will tell npm to install that version (or higher) but it won’t actually be installed until you run the npm install/update. If you want to install a different package or version from what’s declared in your package.

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How do I run a karma test case?

Running a Karma Test Case for a Single Spec File / Single module

  1. Add the Spec name in the test. ts file under the src folder. ​x. import ‘zone.js/dist/zone-testing’; import { getTestBed } from ‘@angular/core/testing’ …
  2. Run ng test –code-coverage. Now Karma and Jasmine will check only Test-Demo. Spec. ts.

How do I start a karma server?

Testing With AngularJS Part 1: Setting up Unit Testing With Karma

  1. STEP 1: INSTALLATION. Install Karma and the necessary plugins using NPM. # Install Karma using Node npm install karma –save-dev. …
  2. STEP 2: CONFIGURATION. Create a file called karma-conf. …
  3. STEP 3: RUNNING TESTS USING THE KARMA COMMAND LINE INTERFACE. You can execute your tests using the Karma command line interface (CLI).


What is karma Conf JS in angular?

The karma. conf. js file is a partial Karma configuration file. The CLI constructs the full runtime configuration in memory, based on application structure specified in the angular.

What is karma Conf JS?

Karma is a test runner for JavaScript that runs on Node. js. It is very well suited to testing AngularJS or any other JavaScript projects. Using Karma to run tests using one of many popular JavaScript testing suites (Jasmine, Mocha, QUnit, etc.)

How do I install karma?

Open the Terminal and start the karma.conf.js generation wizard by typing one of the following depending on your operating system:

  1. For macOS and Linux: ./node_modules/karma/bin/karma init.
  2. For Windows: npm install -g karma-cli. karma init.


Can karma run specific test files?

This gives you more flexibility on how to execute Karma. You are for example able to pass custom command line arguments to those tasks. … (The Karma watch mode would execute all tests.) Another use case would be to only execute tests for files with local changes before you do a commit.

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How do I check karma version?

By installing Karma globally, you’ll have access to the “karma” command no matter your current location. To verify whether the installation was successful, just run “karma –version” and you should see the current version number. You’re also going to need specific plugins, depending on the other testing tools you use.

Why is karma so slow?

The problem is that Chrome starves any minimised or secondary tabs (switched tabs) of CPU cycles. Therefore, if you minimise the browser instance running the karma server, or just switch to a different tab, then the karma server is severely starved of CPU and the tests take a long time to complete.