Better error message if a dependency is not included in karma tests

[csenger]

generator-angular set's up karma tests which is great. If you depend on a module you have to add the source file to karma.conf.js:files to be available in tests. Without it you get something like:

Chrome 29.0 (Linux) Service: RestangularRouteProvider should do something FAILED
    Error: [$injector:modulerr] Failed to instantiate module gcmapApp due to:
    Error: [$injector:modulerr] Failed to instantiate module ngRoute due to:
    Error: [$injector:nomod] Module 'ngRoute' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.
        at /srv/gc-map/client/app/bower_components/angular/angular.js:60:12

The error message doesn't give a hint where to add the dependencies to the js-file in tests. It would be good to help people that are new to angular and don't know where to look, even so it's an issue with the test runner. Maybe the error reference for $injector:nomod can be extended to give a hint for karma users:

http://docs.angularjs.org/error/$injector:nomod

[IgorMinar]

the nomod error page could contain this information but I don't think that we should print anything else in console.

[odino]

+1 :)

[eriktoyra]

+1. It would be a good idea to mention to add the needed resource to the karma-conf.js:files property in the error message. It would have saved me an hour of struggling.

[ainestal]

👍

[marcolino]

I agree for a more useful (for user) error message (like mentioning to check karma configuration file for missing dependencies...).

[IgorMinar]

doc improved.