How to execute only one test spec with angular-cli

Question

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

Answer 1

Configure test.ts file inside src folder:

const context = require.context('./', true, /\.spec\.ts$/);

Replace /\.spec\.ts$/ with the file name you want to test. For example: /app.component\.spec\.ts$/

This will run test only for app.component.spec.ts.