[Files.app] Add an unittest of NavigationListModel

chrome/test/data/file_manager/unit_tests/navigation_list_model_unittest.js

Index: chrome/test/data/file_manager/unit_tests/navigation_list_model_unittest.js
diff --git a/chrome/test/data/file_manager/unit_tests/navigation_list_model_unittest.js b/chrome/test/data/file_manager/unit_tests/navigation_list_model_unittest.js
new file mode 100644
index 0000000000000000000000000000000000000000..3b49957a9291cd978bf2ddac349000ff05c215d1
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+++ b/chrome/test/data/file_manager/unit_tests/navigation_list_model_unittest.js
@@ -0,0 +1,98 @@
+// Copyright 2013 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.
+
+function testModel() {
+  var volumeManager = new MockVolumeManager();
+  var shortcutListModel =
+      new MockFolderShortcutDataModel(['/drive/root/shortcut']);
+  var model = new NavigationListModel(volumeManager, shortcutListModel);
+  assertEquals(3, model.length);
+  assertEquals('/drive/root', model.item(0).path);
+  assertEquals('/Downloads', model.item(1).path);
+  assertEquals('/drive/root/shortcut', model.item(2).path);
+}
+
+function testAddAndRemoveShortcuts() {
+  var volumeManager = new MockVolumeManager();
+  var shortcutListModel =
+      new MockFolderShortcutDataModel(['/drive/root/shortcut']);
+  var model = new NavigationListModel(volumeManager, shortcutListModel);
+
+  assertEquals(3, model.length);
+
+  // Add a shortcut at the tail.
+  shortcutListModel.splice(1, 0, '/drive/root/shortcut2');
+  assertEquals(4, model.length);
+  assertEquals('/drive/root/shortcut2', model.item(3).path);
+
+  // Add a shortcut at the head.
+  shortcutListModel.splice(0, 0, '/drive/root/hoge');
+  assertEquals(5, model.length);
+  assertEquals('/drive/root/hoge', model.item(2).path);
+  assertEquals('/drive/root/shortcut', model.item(3).path);
+  assertEquals('/drive/root/shortcut2', model.item(4).path);
+
+  // Remove the last shortcut.
+  shortcutListModel.splice(2, 1);
+  assertEquals(4, model.length);
+  assertEquals('/drive/root/hoge', model.item(2).path);
+  assertEquals('/drive/root/shortcut', model.item(3).path);
+
+  // Remove the first shortcut.
+  shortcutListModel.splice(0, 1);
+  assertEquals(3, model.length);
+  assertEquals('/drive/root/shortcut', model.item(2).path);
+}
+
+function testAddAndRemoveVolumes() {
+  var volumeManager = new MockVolumeManager();
+  var shortcutListModel =
+      new MockFolderShortcutDataModel(['/drive/root/shortcut']);
+  var model = new NavigationListModel(volumeManager, shortcutListModel);
+
+  assertEquals(3, model.length);
+
+  // Removable volume 'hoge' is mounted.
+  volumeManager.volumeInfoList.push(MockVolumeManager.createMockVolumeInfo(
+      util.VolumeType.REMOVABLE, '/removable/hoge'));
+  assertEquals(4, model.length);
+  assertEquals('/drive/root', model.item(0).path);
+  assertEquals('/Downloads', model.item(1).path);
+  assertEquals('/removable/hoge', model.item(2).path);
+  assertEquals('/drive/root/shortcut', model.item(3).path);
+
+  // Removable volume 'fuga' is mounted.
+  volumeManager.volumeInfoList.push(MockVolumeManager.createMockVolumeInfo(
+      util.VolumeType.REMOVABLE, '/removable/fuga'));
+  assertEquals(5, model.length);
+  assertEquals('/drive/root', model.item(0).path);
+  assertEquals('/Downloads', model.item(1).path);
+  assertEquals('/removable/hoge', model.item(2).path);
+  assertEquals('/removable/fuga', model.item(3).path);
+  assertEquals('/drive/root/shortcut', model.item(4).path);
+
+  // A shortcut is created on the 'hoge' volume.
+  shortcutListModel.splice(1, 0, '/removable/hoge/shortcut2');
+  assertEquals(6, model.length);
+  assertEquals('/drive/root', model.item(0).path);
+  assertEquals('/Downloads', model.item(1).path);
+  assertEquals('/removable/hoge', model.item(2).path);
+  assertEquals('/removable/fuga', model.item(3).path);
+  assertEquals('/drive/root/shortcut', model.item(4).path);
+  assertEquals('/removable/hoge/shortcut2', model.item(5).path);
+
+  // The 'hoge' is unmounted. A shortcut on 'hoge' is removed.
+  volumeManager.volumeInfoList.splice(2, 1);
+  assertEquals(4, model.length);
+  assertEquals('/drive/root', model.item(0).path);
+  assertEquals('/Downloads', model.item(1).path);
+  assertEquals('/removable/fuga', model.item(2).path);
+  assertEquals('/drive/root/shortcut', model.item(3).path);
+
+  // The Drive is unmounted. A shortcut on the Drive is removed.
+  volumeManager.volumeInfoList.splice(0, 1);
+  assertEquals(2, model.length);
+  assertEquals('/Downloads', model.item(0).path);
+  assertEquals('/removable/fuga', model.item(1).path);
+}