Client-side Subsystem Test

[Max-Goebel]

As described in https://github.com/oasp/oasp4js/wiki/Testing, we should have client-side tests against the browser, while the server is replaced by a client-side test double. According to the AngularJS tutorial, for this kind of test we should use Protractor. Unfortunately, I could not find an example using Protractor in the restaurant application.

I would like to clear up the following questions:

• Do we want to use Protractor or is there a better tool for this kind of test?
• Is it possible to replace the server by a test double when using Protractor (e.g. with $httpBackend.whenGET/POST/etc.)?

Furthermore, it would be fine to add an example test to the restaurant application, which should be part of this issue's definition of done.