If you don't have Node.js, please visit https://nodejs.org/en/download/ and install the appropriate release for your system.

In a terminal, go to the project folder and run npm install to install the necessary dependencies saved as devDependencies in package.json.

In a terminal, go to the project folder and run karma start karma.conf.js. This will start a process, which automatically runs all tests when source files are changed and saved as long as the process is running.

If you use the workspace configuration provided in the source code repository, you already have a run configuration called "Karma Tests".

Otherwise, running karma.conf.js in WebStorm will run the tests only once unless the re-run option is selected. In this case, all tests are run when source files are changed similarly to starting Karma from the terminal.

The above-mentioned run configuration can also be created manually with the following steps:

• Go to Run -> Edit Configurations...
• Click on the '+' button on the top left side (Add New Configuration)
• Select 'Karma' from the menu
• In Configuration file box insert the path of the file karma.conf.js
• In Name box insert the name of the configuration (e.g. Karma Tests)
• Save the configuration

By default, the tests run in PhamtomJS. They can be run in other browsers by changing the list of browsers in karma.conf.js to, for example:

browsers: ['PhantomJS', 'Chrome’]

Please make sure that you also have the appropriate launchers available in your node modules, for example:

npm install karma-chrome-launcher

The tests are automatically run when the project is built using Grunt.

The test results are available in test/<USED_BROWSER>/test-results.xml.

Please have a look at the existing tests for reference.

1. Go to the test folder and create a new file. Note that the test folder should maintain the same structure as the src folder, so if the module to be tested is located in src/features/, the related test should be in test/features.

2. Save the file as <name of the module to be tested>.test.js

3. The basic structure of the test is the following:

    define([ <list of paths of the modules that this module depends on> ],
           function (< list of parameters>) {

     	"use strict";

     	describe("<name of the module to be tested to help you understand what the test is supposed to be>",
               function() {
     	  
        ....

     		it("<description of the expected results of the test, usually it starts with the word 'should'>",
     		function() {
     			expect( ... ).<matcher>(...);

     		})
     	});
     });

For more information about the Jasmine Framework used for defining the tests, please visit: https://jasmine.github.io/2.0/introduction.html