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<div><div class="developer-guide-page developer-guide-angular-services-testing-angular-services-page"><p>The following is a unit test for the &#39;notify&#39; service in the &#39;Dependencies&#39; example in <a href="guide/dev_guide.services.creating_services">Creating Angular Services</a>. The unit test example uses Jasmine
spy (mock) instead of a real browser alert.</p>
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var mock, notify;

beforeEach(function() {
  mock = {alert: jasmine.createSpy()};

  module(function($provide) {
    $provide.value('$window', mock);
  });

  inject(function($injector) {
    notify = $injector.get('notify');
  });
});

it('should not alert first two notifications', function() {
  notify('one');
  notify('two');

  expect(mock.alert).not.toHaveBeenCalled();
});

it('should alert all after third notification', function() {
  notify('one');
  notify('two');
  notify('three');

  expect(mock.alert).toHaveBeenCalledWith("one\ntwo\nthree");
});

it('should clear messages after alert', function() {
  notify('one');
  notify('two');
  notify('third');
  notify('more');
  notify('two');
  notify('third');

  expect(mock.alert.callCount).toEqual(2);
  expect(mock.alert.mostRecentCall.args).toEqual(["more\ntwo\nthird"]);
});
</pre>
<h3 id="related-topics">Related Topics</h3>
<ul>
<li><a href="guide/dev_guide.services.understanding_services">Understanding Angular Services</a></li>
<li><a href="guide/dev_guide.services.creating_services">Creating Angular Services</a></li>
<li><a href="guide/dev_guide.services.managing_dependencies">Managing Service Dependencies</a></li>
<li><a href="guide/dev_guide.services.injecting_controllers">Injecting Services Into Controllers</a></li>
</ul>
<h3 id="related-api">Related API</h3>
<ul>
<li><a href="api/ng">Angular Service API</a></li>
</ul>
</div></div>