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The following is a unit test for the 'notify' service in the 'Dependencies' example in Creating Angular Services. The unit test example uses Jasmine spy (mock) instead of a real browser alert.

  1. var mock, notify;
  2.  
  3. beforeEach(function() {
  4.   mock = {alert: jasmine.createSpy()};
  5.  
  6.   module(function($provide) {
  7.     $provide.value('$window', mock);
  8.   });
  9.  
  10.   inject(function($injector) {
  11.     notify = $injector.get('notify');
  12.   });
  13. });
  14.  
  15. it('should not alert first two notifications', function() {
  16.   notify('one');
  17.   notify('two');
  18.  
  19.   expect(mock.alert).not.toHaveBeenCalled();
  20. });
  21.  
  22. it('should alert all after third notification', function() {
  23.   notify('one');
  24.   notify('two');
  25.   notify('three');
  26.  
  27.   expect(mock.alert).toHaveBeenCalledWith("one\ntwo\nthree");
  28. });
  29.  
  30. it('should clear messages after alert', function() {
  31.   notify('one');
  32.   notify('two');
  33.   notify('third');
  34.   notify('more');
  35.   notify('two');
  36.   notify('third');
  37.  
  38.   expect(mock.alert.callCount).toEqual(2);
  39.   expect(mock.alert.mostRecentCall.args).toEqual(["more\ntwo\nthird"]);
  40. });

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