How to execute only one test spec with angular-cli

Issue

I have Angular2 project build with Angular-CLI (beta 20).

Is there a way to run tests against only one selected spec file?

I used to have a project based on Angular2 quick start, and I could manually add specs to jasmine file. But I don't know how to set this up outside of karma testing or how to limit karma tests to specific files with Angular-CLI builds.

Solution

Each of your .spec.ts file have all its tests grouped in describe block like this:

describe('SomeComponent', () => {...}

You can easily run just this single block, by prefixing the describe function name with f:

fdescribe('SomeComponent', () => {...}

If you have such function, no other describe blocks will run. Btw. you can do similar thing with it => fit and there is also a "blacklist" version - x. So:

• fdescribe and fit causes only functions marked this way to run
• xdescribe and xit causes all but functions marked this way to run

Answered By - Tomek Sułkowski