[Files.app] Add tests of opening Gallery from Files.app

BUG=465575
TEST=browser_test passes

Review URL: https://codereview.chromium.org/1011663002

Cr-Commit-Position: refs/heads/master@{#320866}

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

@@ -867,6 +867,20 @@ WRAPPED_INSTANTIATE_TEST_CASE_P(
         TestParameter(NOT_IN_GUEST_MODE, "audioRepeatMultipleFileDrive"),
         TestParameter(NOT_IN_GUEST_MODE, "audioNoRepeatMultipleFileDrive")));
 
+// Slow tests are disabled on debug build. http://crbug.com/327719
+// Fails on official build. http://crbug.com/429294
+#if !defined(NDEBUG) || defined(OFFICIAL_BUILD)
+#define MAYBE_OpenImageFiles DISABLED_OpenImageFiles
+#else
+#define MAYBE_OpenImageFiles OpenImageFiles
+#endif
+WRAPPED_INSTANTIATE_TEST_CASE_P(
+    MAYBE_OpenImageFiles,
+    FileManagerBrowserTest,
+    ::testing::Values(TestParameter(IN_GUEST_MODE, "imageOpenDownloads"),
+                      TestParameter(NOT_IN_GUEST_MODE, "imageOpenDownloads"),
+                      TestParameter(NOT_IN_GUEST_MODE, "imageOpenDrive")));
+
 // Slow tests are disabled on debug build. http://crbug.com/327719
 #if !defined(NDEBUG) || defined(OFFICIAL_BUILD)
 #define MAYBE_CreateNewFolder DISABLED_CreateNewFolder

ui/file_manager/integration_tests/file_manager/background.js

@@ -13,6 +13,15 @@ var FILE_MANAGER_EXTENSIONS_ID = 'hhaomjibdihmijegdhdafkllkbggdgoj';
 
 var remoteCall = new RemoteCallFilesApp(FILE_MANAGER_EXTENSIONS_ID);
 
+/**
+ * Extension ID of Gallery.
+ * @type {string}
+ * @const
+ */
+var GALLERY_APP_ID = 'nlkncpkkdoccmpiclbokaimcnedabhhm';
+
+var galleryApp = new RemoteCallGallery(GALLERY_APP_ID);
+
 /**
  * Extension ID of Audio Player.
  * @type {string}

ui/file_manager/integration_tests/file_manager/open_image_files.js

+// Copyright 2015 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.
+
+'use strict';
+
+(function() {
+
+/**
+ * Tests if the gallery shows up for the selected image and is loaded
+ * successfully.
+ *
+ * @param {string} path Directory path to be tested.
+ */
+function imageOpen(path) {
+  var appId;
+  var galleryAppId;
+
+  var expectedFilesBefore =
+      TestEntryInfo.getExpectedRows(path == RootPath.DRIVE ?
+          BASIC_DRIVE_ENTRY_SET : BASIC_LOCAL_ENTRY_SET).sort();
+  var expectedFilesAfter =
+      expectedFilesBefore.concat([ENTRIES.image2.getExpectedRow()]).sort();
+
+  StepsRunner.run([
+    function() {
+      setupAndWaitUntilReady(null, path, this.next);
+    },
+    // Select the song.
+    function(inAppId) {
+      appId = inAppId;
+
+      // Add an additional image file.
+      addEntries(['local', 'drive'], [ENTRIES.image2], this.next);
+    },
+    function(result) {
+      chrome.test.assertTrue(result);
+      remoteCall.waitForFileListChange(appId, expectedFilesBefore.length).
+          then(this.next);
+    },
+    function(actualFilesAfter) {
+      chrome.test.assertEq(expectedFilesAfter, actualFilesAfter);
+      // Open a file in Files.app.
+      remoteCall.callRemoteTestUtil(
+          'openFile', appId, ['My Desktop Background.png'], this.next);
+    },
+    function(result) {
+      chrome.test.assertTrue(result);
+      // Wait for the window.
+      galleryApp.waitForWindow('gallery.html').then(this.next);
+    },
+    function(inAppId) {
+      galleryAppId = inAppId;
+      // Wait for the file opened.
+      galleryApp.waitForSlideImage(
+          galleryAppId, 800, 600, 'My Desktop Background').then(this.next);
+    },
+    function() {
+      // Open another file in Files.app.
+      remoteCall.callRemoteTestUtil(
+          'openFile', appId, ['image2.png'], this.next);
+    },
+    function(result) {
+      chrome.test.assertTrue(result);
+      // Wait for the file opened.
+      galleryApp.waitForSlideImage(
+          galleryAppId, 1024, 768, 'image2').then(this.next);
+    },
+    function() {
+      // Close window
+      galleryApp.closeWindowAndWait(galleryAppId).then(this.next);
+    },
+    // Wait for closing.
+    function(result) {
+      chrome.test.assertTrue(result, 'Fail to close the window');
+      checkIfNoErrorsOccured(this.next);
+    }
+  ]);
+}
+
+testcase.imageOpenDownloads = function() {
+  imageOpen(RootPath.DOWNLOADS);
+};
+
+testcase.imageOpenDrive = function() {
+  imageOpen(RootPath.DRIVE);
+};
+
+})();

ui/file_manager/integration_tests/file_manager_test_manifest.json

@@ -21,6 +21,7 @@
       "file_manager/grid_view.js",
       "file_manager/keyboard_operations.js",
       "file_manager/open_audio_files.js",
+      "file_manager/open_image_files.js",
       "file_manager/open_video_files.js",
       "file_manager/open_zip_files.js",
       "file_manager/restore_geometry.js",

ui/file_manager/integration_tests/test_util.js

@@ -220,7 +220,7 @@ var ENTRIES = {
   image2: new TestEntryInfo(
       EntryType.FILE, 'image2.png', 'image2.png',
       'image/png', SharedOption.NONE, 'Jan 18, 2038, 1:02 AM',
-      'image2.png', '272 bytes', 'PNG image'),
+      'image2.png', '4 KB', 'PNG image'),
 
   image3: new TestEntryInfo(
       EntryType.FILE, 'image3.jpg', 'image3.jpg',