[Files.app] Add an unittest of NavigationListModel

This patch adds an unittest framework for JavaScript components. In addition, this also adds an unit test of NavigationListModel using the framework.

BUG=309946
TEST=browser_test passes
R=hashimoto@chromium.org, mtomasz@chromium.org

Review URL: https://codereview.chromium.org/48623002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232892 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/file_manager/file_manager_jstest.cc

+// 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.
+
+#include <vector>
+
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test_utils.h"
+
+class FileManagerJsTest : public InProcessBrowserTest {
+ public:
+  // Runs all test functions in |file|, waiting for them to complete.
+  void RunTest(const base::FilePath& file) {
+    GURL url = ui_test_utils::GetTestUrl(
+        base::FilePath(FILE_PATH_LITERAL("file_manager/unit_tests")), file);
+    ui_test_utils::NavigateToURL(browser(), url);
+
+    content::RenderViewHost* rvh = browser()->tab_strip_model()
+        ->GetActiveWebContents()->GetRenderViewHost();
+    ASSERT_TRUE(rvh);
+
+    const std::vector<int> empty_libraries;
+    EXPECT_TRUE(ExecuteWebUIResourceTest(rvh, empty_libraries));
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(
+    FileManagerJsTest, NavigationListModelTest) {
+  RunTest(base::FilePath(
+      FILE_PATH_LITERAL("navigation_list_model_unittest.html")));
+}

chrome/chrome_tests.gypi

@@ -1042,6 +1042,7 @@
         'browser/chromeos/file_manager/drive_test_util.h',
         'browser/chromeos/file_manager/external_filesystem_apitest.cc',
         'browser/chromeos/file_manager/file_manager_browsertest.cc',
+        'browser/chromeos/file_manager/file_manager_jstest.cc',
         'browser/chromeos/input_method/input_method_engine_ibus_browserttests.cc',
         'browser/chromeos/kiosk_mode/mock_kiosk_mode_settings.cc',
         'browser/chromeos/kiosk_mode/mock_kiosk_mode_settings.h',

chrome/test/data/file_manager/unit_tests/mocks/mock_file_entry.js

+// 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.
+
+/**
+ * Mock class for FileEntry.
+ * @constructor
+ */
+function MockFileEntry() {
+  this.fullPath = null;
+}

chrome/test/data/file_manager/unit_tests/mocks/mock_folder_shortcut_data_model.js

+// 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.
+
+/**
+ * Mock class for FolderShortcutDataModel.
+ * @param {...string} var_args List of the initial shortcuts.
+ * @extends {cr.ui.ArrayDataModel}
+ * @constructor
+ */
+function MockFolderShortcutDataModel(var_args) {
+  cr.ui.ArrayDataModel.apply(this, arguments);
+}
+
+MockFolderShortcutDataModel.prototype = {
+  __proto__: cr.ui.ArrayDataModel.prototype
+};
+
+/**
+ * Mock function for FolderShortcutDataModel.compare().
+ * @param {string} a First parameter to be compared.
+ * @param {string} b Second parameter to be compared with.
+ * @return {number} Negative if a < b, positive if a > b, or zero if a == b.
+ */
+MockFolderShortcutDataModel.prototype.compare = function(a, b) {
+  return a.localeCompare(b);
+};

chrome/test/data/file_manager/unit_tests/mocks/mock_volume_manager.js

+// 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.
+
+/**
+ * Mock class for VolumeManager.
+ * @constructor
+ */
+function MockVolumeManager() {
+  this.volumeInfoList = new cr.ui.ArrayDataModel([]);
+
+  this.volumeInfoList.push(MockVolumeManager.createMockVolumeInfo(
+      util.VolumeType.DRIVE, '/drive'));
+  this.volumeInfoList.push(MockVolumeManager.createMockVolumeInfo(
+      util.VolumeType.DOWNLOADS, '/Downloads'));
+}
+
+/**
+ * Returns the corresponding VolumeInfo.
+ * @param {string} mountPath Path to be looking for with.
+ * @return {VolumeInfo} Corresponding VolumeInfo.
+ */
+MockVolumeManager.prototype.getVolumeInfo = function(mountPath) {
+  for (var i = 0; i < this.volumeInfoList.length; i++) {
+    if (this.volumeInfoList.item(i).mountPath === mountPath)
+      return this.volumeInfoList.item(i);
+  }
+  return null;
+};
+
+/**
+ * Resolve FileEntry.
+ * @param {string} path
+ * @param {function(FileEntry)} successCallback Callback on success.
+ * @param {function()} errorCallback Callback on error.
+ */
+MockVolumeManager.prototype.resolvePath = function(
+    path, successCallback, errorCallback) {
+  var mockFileEntry = new MockFileEntry();
+  mockFileEntry.fullPath = path;
+  successCallback(mockFileEntry);
+};
+
+/**
+ * Utility function to create a mock VolumeInfo.
+ * @param {VolumeType} type Volume type.
+ * @param {string} path Volume path.
+ * @return {VolumeInfo} Created mock VolumeInfo.
+ */
+MockVolumeManager.createMockVolumeInfo = function(type, path) {
+  var entry = new MockFileEntry();
+  entry.fullPath = path;
+
+  var volumeInfo = new VolumeInfo(
+      type,
+      path,
+      entry,  // Directory entry.
+      '',  // error
+      '',  // deviceType
+      false);  // readonly
+
+  return volumeInfo;
+};

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

+<!DOCTYPE html>
+<!-- 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.
+  -->
+
+<html>
+<body>
+
+<script src="../../../../../ui/webui/resources/js/cr.js"></script>
+<script src="../../../../../ui/webui/resources/js/cr/ui.js"></script>
+<script src="../../../../../ui/webui/resources/js/cr/event_target.js"></script>
+<script src="../../../../../ui/webui/resources/js/cr/ui/array_data_model.js"></script>
+
+<script src="../../../../browser/resources/file_manager/common/js/async_util.js"></script>
+<script src="../../../../browser/resources/file_manager/common/js/path_util.js"></script>
+<script src="../../../../browser/resources/file_manager/common/js/util.js"></script>
+
+<script src="../../../../browser/resources/file_manager/background/js/volume_manager.js"></script>
+<script src="../../../../browser/resources/file_manager/foreground/js/navigation_list_model.js"></script>
+
+<script src="mocks/mock_file_entry.js"></script>
+<script src="mocks/mock_volume_manager.js"></script>
+<script src="mocks/mock_folder_shortcut_data_model.js"></script>
+
+<script src="navigation_list_model_unittest.js"></script>
+
+</body>
+</html>

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

+// 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);
+}