[Media Router] Force DEFAULT cast mode when starting presentations from content.

chrome/test/data/webui/media_router/media_router_container_cast_mode_list_tests.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** @fileoverview Suite of tests for media-router-container that focus on the
  * cast mode list.
  */
 cr.define('media_router_container_cast_mode_list', function() {
   function registerTests() {
     suite('MediaRouterContainerCastModeList', function() {
@@ skipping 40 matching lines @@
        */
       var fakeCastModeList = [];
 
       /**
        * The list of CastModes to show with non-default modes only.
        * @type {!Array<!media_router.CastMode>}
        */
       var fakeCastModeListWithNonDefaultModesOnly = [];
 
       /**
+       * The list of CastModes to show with default mode forced.
+       * @type {!Array<!media_router.CastMode>}
+       */
+      var fakeCastModeListWithDefaultModeForced = [];
+
+      /**
        * The blocking issue to show.
        * @type {?media_router.Issue}
        */
       var fakeNonBlockingIssue;
 
       /**
        * The list of available sinks.
        * @type {!Array<!media_router.Sink>}
        */
       var fakeSinkList = [];
@@ skipping 14 matching lines @@
         // Get common functions and variables.
         var test_base = media_router_container_test_base.init(container);
 
         checkCurrentView = test_base.checkCurrentView;
         checkElementsVisibleWithId = test_base.checkElementsVisibleWithId;
         checkElementText = test_base.checkElementText;
         fakeBlockingIssue = test_base.fakeBlockingIssue;
         fakeCastModeList = test_base.fakeCastModeList;
         fakeCastModeListWithNonDefaultModesOnly =
             test_base.fakeCastModeListWithNonDefaultModesOnly;
+        fakeCastModeListWithDefaultModeForced =
+            test_base.fakeCastModeListWithDefaultModeForced;
         fakeNonBlockingIssue = test_base.fakeNonBlockingIssue;
         fakeSinkList = test_base.fakeSinkList;
 
         container.castModeList = test_base.fakeCastModeList;
 
         // Allow for the media router container to be created, attached, and
         // listeners registered in an afterNextRender() call.
         Polymer.RenderStatus.afterNextRender(this, done);
       });
 
@@ skipping 210 matching lines @@
               var sinkList =
                   container.shadowRoot.getElementById('sink-list')
                       .querySelectorAll('paper-item');
               assertEquals(3, sinkList.length);
               done();
             });
           });
         });
       });
 
+      // When a forced cast mode it set, it is used.
+      test('cast mode list respects forced mode', function(done) {
+        container.allSinks = [
+          new media_router.Sink('sink id 1', 'Sink 1', null, null,
+                                media_router.SinkIconType.CAST,
+                                media_router.SinkStatus.ACTIVE, 0x1),
+          new media_router.Sink('sink id 2', 'Sink 2', null, null,
+                                media_router.SinkIconType.CAST,
+                                media_router.SinkStatus.ACTIVE, 0x1 | 0x2),
+          new media_router.Sink('sink id 3', 'Sink 3', null, null,
+                                media_router.SinkIconType.CAST,
+                                media_router.SinkStatus.ACTIVE, 0x2)
+        ];
+        container.castModeList = fakeCastModeListWithDefaultModeForced;
+        MockInteractions.tap(container.$['container-header'].
+                             $['arrow-drop-icon']);
+        setTimeout(function() {
+          assertEquals(media_router.CastModeType.DEFAULT,
+                       container.shownCastModeValue_);
+          assertEquals('Cast google.com', container.headerText);
+          assertFalse(container.userHasSelectedCastMode_);
+
+          var sinkList =
+              container.shadowRoot.getElementById('sink-list')
+              .querySelectorAll('paper-item');
+
+          // The sink list contains only sinks compatible with DEFAULT mode

[apacible, 2017/05/19 14:54:37]

nit: period.

[mark a. foltz, 2017/05/19 18:30:32]

Done.

+          assertEquals(2, sinkList.length);
+          checkElementText('Sink 1', sinkList[0]);
+          checkElementText('Sink 2', sinkList[1]);
+          done();
+        });
+      });
+
       // Tests that the sink list does not contain any sinks that are not
       // compatible with the selected cast mode and are not associated with a
       // route.
       test('sink list in user selected cast mode', function(done) {
         var newSinks = [
           new media_router.Sink('sink id 10', 'Sink 10', null, null,
               media_router.SinkIconType.CAST,
               media_router.SinkStatus.ACTIVE, 0x4 | 0x8),
           new media_router.Sink('sink id 20', 'Sink 20', null, null,
               media_router.SinkIconType.CAST,
@@ skipping 113 matching lines @@
           });
         });
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });