Angular tests are always in the same place as the code. When you create a component, service, pipe, directive with
ng generate it will always also generate a
Every file with the extension
.spec.ts is a test file that is caught by the testing tool. Each thing is tested in a different way. For a really long documentation on tests check the official documentation here.
Visual Studio has the magic window “Test Explorer” which discovers unit tests on your application and list them. It shows information about the tests.
It can be used on a NodeJS project.
Unit Tests are a way to ensure the logic of your classes are producing the expected results. Those tests can be run from Visual Studio without having to load up the entire application manually navigating to a specific section and trying to reproduce different scenarios.