How do I run a single test file in karma?

How do you run a karma test?

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).

22 окт. 2014 г.

How do I run a single jest file?

In order to run a specific test, you’ll need to use the jest command. npm test will not work. To access jest directly on the command line, install it via npm i -g jest-cli or yarn global add jest-cli . Then simply run your specific test with jest bar.

How do you run a single test case in Jasmine?

You can use fit() or fdescribe() instead of it() and describe() to achieve what is known as focussed test cases. describe(“test spec”, function() { it(“test case 1”, function() { }); fit(“test case 2”, function() { }); }); In the above example, only test case 2 would get executed.

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How do I run a spec TS file?

spec. ts extension will run. To run your tests using the Angular CLI, you use the ng test command in your terminal. As a result, Karma will open up the default browser and run all the tests written with the aid of Jasmine and will display the outcome of those tests.

How do I run a karma test without a browser?

There is nothing new in running Karma tests without a browser window, you have been able to do it with PhantomJS by installing the karma-phantomjs-launcher. PhantomJS has been good enough solution for this, but you might encounter some issues every now and then and need to add some additional polyfills 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.

4 сент. 2020 г.

How do I run a single mocha test file?

Run a Single Test File

Using the mocha cli, you can easily specify an exact or wildcarded pattern that you want to run. This is accomplished with the grep option when running the mocha command. The spec must have some describe or it that matches the grep pattern, as in: describe(‘api’, _ => { // … })

How do I run a NPM test?

Basic setup

  1. Make a new project directory $ mkdir test-example; cd test-example.
  2. Ask npm to create a new project file for you: $ npm init and accept all defaults by hitting Enter on all the prompts. This will create package. …
  3. Try and start the test feature with $ npm test This will fail, which is expected.
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How do I run a screenshot test?

When writing snapshot tests for a React component, you first need to have code in a working state. Then, generate a snapshot of its expected output given certain data. The snapshot tests are committed alongside the component. Jest, a testing framework, will compare the snapshot to the rendered output for the test.

How do you run a single test case on a protractor?

describe(‘Login page’, function() { beforeEach(function() { browser. ignoreSynchronization = true; ptor = protractor. getInstance(); }); it(‘should contain navigation items’, function(){ //test case code here }); it(‘should login the user successfully’, function(){ //test case code here }) });

How do you run one test case in a protractor?

The most recent version (at least) of Protractor supports the usual Jasmine way of doing that: rename a describe() function to ddescribe() , and only the tests inside it will run. Or rename an it() function to iit() , and only this test will run.

What is karma JS?

Karma is a test runner for JavaScript that runs on Node. js. … Using Karma to run tests using one of many popular JavaScript testing suites (Jasmine, Mocha, QUnit, etc.) and have those tests executed not only in the browsers of your choice, but also on the platform of your choice (desktop, phone, tablet.)

What are spec TS files?

The spec files are unit tests for your source files. … ts file for each . ts file. They are run using the Jasmine javascript test framework through the Karma test runner ( when you use the ng test command.

How do you write a unit test case?

  1. 13 Tips for Writing Useful Unit Tests. …
  2. Test One Thing at a Time in Isolation. …
  3. Follow the AAA Rule: Arrange, Act, Assert. …
  4. Write Simple “Fastball-Down-the-Middle” Tests First. …
  5. Test Across Boundaries. …
  6. If You Can, Test the Entire Spectrum. …
  7. If Possible, Cover Every Code Path. …
  8. Write Tests That Reveal a Bug, Then Fix It.
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