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gaia/apps/system/test/unit/cost_control_test.js

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+'use strict';
+/* global CostControl */
+/* global MockApplications */
+/* global MocksHelper */
+
+requireApp('system/test/unit/mock_applications.js');
+
+var mocksForCostControl = new MocksHelper([
+  'Applications'
+]).init();
+
+suite('system/CostControl', function() {
+  mocksForCostControl.attachTestHelpers();
+  var stubById;
+  var realApplications;
+  var fakeElement;
+  var subject;
+
+  var fakeAppConfig = {
+    'isActivity': false,
+    'url': 'app://costcontrol.gaiamobile.org/index.html',
+    'name': 'CostControl',
+    'manifestURL': 'app://costcontrol.gaiamobile.org/manifest.webapp',
+    'origin': 'app://costcontrol.gaiamobile.org',
+    'manifest': {
+      'name': 'CostControl'
+    },
+    target: {}
+  };
+
+  setup(function(done) {
+    if (!('setVisible' in HTMLIFrameElement.prototype)) {
+      HTMLIFrameElement.prototype.setVisible = function stub() {};
+    }
+
+    fakeElement = document.createElement('div');
+    fakeElement.style.cssText = 'height: 100px; display: block;';
+    stubById = this.sinon.stub(document, 'getElementById')
+                          .returns(fakeElement.cloneNode(true));
+
+    MockApplications.mRegisterMockApp(fakeAppConfig);
+    realApplications = window.applications;
+    window.applications = MockApplications;
+    window.applications.ready = true;
+
+    requireApp('system/js/cost_control.js', function() {
+      subject = new CostControl();
+      subject.start();
+      done();
+    });
+  });
+
+  teardown(function() {
+    stubById.restore();
+    window.applications = realApplications;
+  });
+
+  suite('network activity threshold', function() {
+    test('updates widget frame hash', function() {
+      var setVisibleSpy = this.sinon.spy(HTMLIFrameElement.prototype,
+        'setVisible');
+
+      // Dispatch a utilitytrayshow to show the widget.
+      window.dispatchEvent(new CustomEvent('utilitytrayshow'));
+
+      // If we don't have activity the hash should not update.
+      var oldFrameSrc = subject.widgetFrame.src;
+      window.dispatchEvent(new CustomEvent('moznetworkupload'));
+      assert.equal(oldFrameSrc, subject.widgetFrame.src);
+
+      subject.activityCounter = 74;
+      window.dispatchEvent(new CustomEvent('moznetworkupload'));
+      assert.notEqual(oldFrameSrc, subject.widgetFrame.src);
+
+      assert.ok(setVisibleSpy.calledOnce);
+    });
+  });
+
+});