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gaia/apps/gallery/test/unit/mock_thumbnail_group.js

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+'use strict';
+/* exported MockThumbnailGroup */
+
+function MockThumbnailGroup(item) {
+  var counter = 0;
+  var dummyNode = document.createElement('div');
+  dummyNode.textContent = MockThumbnailGroup._GroupID;
+
+  var thumbnails = [];
+
+  function addItem(item) {
+    var obj = {data: item.name};
+    counter++;
+    thumbnails.push(obj);
+    return obj;
+  }
+
+  function removeItem(item) {
+    counter--;
+    thumbnails.pop({data: item.name});
+  }
+
+  function localize() {}
+
+  MockThumbnailGroup._GroupMap[MockThumbnailGroup._GroupID] = {
+    // api
+    addItem: addItem,
+    getCount: function() {return counter;},
+    removeItem: removeItem,
+    localize: localize,
+    // properties.
+    groupID: MockThumbnailGroup._GroupID,
+    htmlNode: dummyNode,
+    thumbnails: thumbnails
+  };
+
+  return MockThumbnailGroup._GroupMap[MockThumbnailGroup._GroupID];
+}
+
+MockThumbnailGroup.getGroupID = function(video) {
+  return MockThumbnailGroup._GroupID;
+};
+
+MockThumbnailGroup.compareGroupID = function(id1, id2) {
+  return id1 > id2 ? 1 : (id1 < id2 ? -1 : 0);
+};
+
+MockThumbnailGroup._GroupMap = {};
+
+MockThumbnailGroup.reset = function() {
+  MockThumbnailGroup._GroupMap = {};
+  delete MockThumbnailGroup._GroupID;
+};