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

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+'use strict';
+/* global MocksHelper, MockSettingsListener, TtlView */
+
+requireApp('system/shared/test/unit/mocks/mock_settings_listener.js');
+requireApp('system/js/ttl_view.js');
+
+var mocksForTtlView = new MocksHelper([
+  'SettingsListener'
+]).init();
+
+suite('system/TtlView', function() {
+  var stubById;
+  var fakeElement;
+  var subject;
+
+  mocksForTtlView.attachTestHelpers();
+  setup(function() {
+    fakeElement = document.createElement('div');
+    fakeElement.style.cssText = 'height: 100px; display: block;';
+    stubById = this.sinon.stub(document, 'getElementById')
+                          .returns(fakeElement.cloneNode(true));
+    subject = new TtlView();
+  });
+
+  teardown(function() {
+    stubById.restore();
+  });
+
+  suite('constructor', function() {
+    test('calls hide', function() {
+      var hideStub = this.sinon.stub(TtlView.prototype, 'hide');
+      subject = new TtlView();
+      MockSettingsListener.mCallbacks['debug.ttl.enabled'](false);
+      assert.ok(hideStub.calledOnce);
+    });
+
+    test('calls show', function() {
+      var showStub = this.sinon.stub(TtlView.prototype, 'show');
+      subject = new TtlView();
+      MockSettingsListener.mCallbacks['debug.ttl.enabled'](true);
+      assert.ok(showStub.calledOnce);
+    });
+  });
+
+  suite('hide', function() {
+    test('removes listeners', function() {
+      var targets = [
+        'homescreen',
+        'app',
+        'activity'
+      ];
+
+      var events = [];
+      targets.forEach(function listen(target) {
+        events.push(target + 'opening');
+        events.push(target + 'loadtime');
+      });
+
+      var removeStub = this.sinon.stub(window, 'removeEventListener');
+      subject.hide();
+      events.forEach(function(evt) {
+        assert.ok(removeStub.calledWith(evt, subject));
+      }, this);
+    });
+  });
+
+  suite('show', function() {
+    test('adds listeners', function() {
+      var targets = [
+        'homescreen',
+        'app',
+        'activity'
+      ];
+
+      var events = [];
+      targets.forEach(function listen(target) {
+        events.push(target + 'opening');
+        events.push(target + 'loadtime');
+      });
+
+      var addEventStub = this.sinon.stub(window, 'addEventListener');
+      subject.show();
+      events.forEach(function(evt) {
+        assert.ok(addEventStub.calledWith(evt, subject));
+      }, this);
+    });
+  });
+
+  suite('handleEvent', function() {
+    test('updateLoadtime events', function() {
+      var targets = [
+        'homescreen',
+        'app',
+        'activity'
+      ];
+
+      var events = [];
+      targets.forEach(function listen(target) {
+        events.push(target + 'loadtime');
+      });
+
+      var updateStub = this.sinon.stub(subject, 'updateLoadtime');
+      events.forEach(function(evt, i) {
+        subject.handleEvent({
+          type: evt,
+          detail: {
+            time: 123,
+            type: 'c'
+          }
+        });
+        assert.ok(updateStub.calledWith(123, 'c'));
+      });
+    });
+
+    test('resetLoadtime events', function() {
+      var targets = [
+        'homescreen',
+        'app',
+        'activity'
+      ];
+
+      var events = [];
+      targets.forEach(function listen(target) {
+        events.push(target + 'opening');
+      });
+
+      events.forEach(function(evt) {
+        var resetStub = this.sinon.stub(subject, 'resetLoadtime');
+        subject.handleEvent({
+          type: evt
+        });
+        assert.ok(resetStub.calledOnce);
+        resetStub.restore();
+      }, this);
+    });
+  });
+
+  suite('resetLoadtime', function() {
+    test('sets the time', function() {
+      subject.show();
+      subject.element.textContent = '123';
+      subject.resetLoadtime();
+      assert.equal(subject.element.textContent, '00000');
+    });
+  });
+
+  suite('updateLoadtime', function() {
+    test('updates the time', function() {
+      subject.show();
+      subject.updateLoadtime(123, 'c');
+      assert.equal(subject.element.textContent, '123 [c]');
+    });
+  });
+
+});