Update karma.js

File dependencies are very tied to your module. By using a config file, you can decide which decencies to use.
So add a karma.config.js to your <modulename>/test and e.g. add:

module.exports = function(config) {
    'use strict';
    config.set({
        // list of files / patterns to load in the browser
        files: [
            '../bower_components/angular/angular.js',
            '../bower_components/angular-mocks/angular-mocks.js',
            '../src/app/*.js',
            '../src/app/**/*.js',
            'unit/**/*.spec.js'
          ]
        });
  };