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gaia/apps/system/test/unit/remote/app_test.js

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+/* global MocksHelper, BaseModule */
+'use strict';
+
+require('/shared/test/unit/mocks/mock_lazy_loader.js');
+requireApp('system/js/service.js');
+requireApp('system/js/base_module.js');
+requireApp('system/js/remote/app.js');
+
+var mocksForMultiScreenController = new MocksHelper([
+  'LazyLoader'
+]).init();
+
+suite('system/remote/App', function() {
+  mocksForMultiScreenController.attachTestHelpers();
+
+  var subject;
+
+  setup(function() {
+    window.location.hash = '#123';
+    subject = BaseModule.instantiate('App');
+    subject.start();
+  });
+
+  teardown(function() {
+    subject.stop();
+  });
+
+  suite('displayId', function() {
+    test('should get the displayId from location.hash', function() {
+      assert.equal(subject._displayId, 123);
+    });
+
+    test('should return displayId', function() {
+      assert.equal(subject.displayId(), subject._displayId);
+    });
+
+    test('displayId should be -1 if location.hash is omitted', function() {
+      window.location.hash = '';
+      subject.stop();
+      subject.start();
+      assert.equal(subject._displayId, -1);
+    });
+  });
+});