Media Galleries API Picasa: End-to-end browsertest.

chrome/test/data/extensions/api_test/media_galleries/picasa/test.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.
+
+var mediaGalleries = chrome.mediaGalleries;
+
+// Get's entire listing from directory, then verifies the sorted contents.
+function verifyDirectoryEntry(directoryEntry, verifyFunction) {
+  var allEntries = [];
+  var reader = directoryEntry.createReader();
+
+  function readEntries() {
+    reader.readEntries(readEntriesCallback, chrome.test.fail);
+  }
+
+  function readEntriesCallback(entries) {
+    if (entries.length == 0) {
+      verifyFunction(directoryEntry, allEntries.sort());
+      return;
+    }
+
+    allEntries = allEntries.concat(entries);
+    readEntries();
+  }
+
+  readEntries();
+}
+
+// Verifies a directory itself, then the contents.
+function getAndVerifyDirectoryEntry(parentEntry, directoryName,
+                                    verifyFunction) {
+  function getDirectoryCallback(entry) {
+    chrome.test.assertTrue(entry.isDirectory);
+    verifyDirectoryEntry(entry, verifyFunction);
+  }
+
+  parentEntry.getDirectory(directoryName, {create: false},
+                           getDirectoryCallback, chrome.test.fail);
+}
+
+function verifyJPEG(parentDirectoryEntry, filename, doneCallback) {
+  function verifyFile(file) {
+    var reader = new FileReader();
+
+    reader.onload = function(e) {
+      var arraybuffer = e.target.result;
+      var view = new Uint8Array(arraybuffer);
+      chrome.test.assertEq(0xFF, view[0]);
+      chrome.test.assertEq(0xD8, view[1]);
+      chrome.test.assertEq(0xFF, view[2]);
+      doneCallback();
+    }
+
+    reader.onerror =
+      chrome.test.fail.bind(null, "Unable to read test image: " + filename);
+
+    reader.readAsArrayBuffer(file);
+  }
+
+  function verifyFileEntry(fileEntry) {
+    fileEntry.file(verifyFile, chrome.test.fail)
+  }
+
+  parentDirectoryEntry.getFile(filename, {create: false}, verifyFileEntry,
+                               chrome.test.fail);
+}
+
+function verifyAllJPEGs(parentDirectoryEntry, filenames, doneCallback) {
+  var remaining = filenames;
+  function verifyNextJPEG() {
+    if (remaining.length == 0) {
+      doneCallback();
+      return;
+    }
+    verifyJPEG(parentDirectoryEntry, remaining.pop(), verifyNextJPEG);
+  }
+  verifyNextJPEG();
+}
+
+function GalleryPropertiesTest(picasaGallery) {
+  var galleryProperties =
+      mediaGalleries.getMediaFileSystemMetadata(picasaGallery);
+  chrome.test.assertFalse(galleryProperties.isRemovable);
+  chrome.test.succeed();
+}
+
+function RootListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(2, entries.length);
+    chrome.test.assertTrue(entries[0].isDirectory);
+    chrome.test.assertTrue(entries[1].isDirectory);
+    chrome.test.assertEq("albums", entries[0].name);
+    chrome.test.assertEq("folders", entries[1].name);
+    chrome.test.succeed();
+  }
+
+  verifyDirectoryEntry(picasaGallery.root, verify);
+}
+
+function AlbumsListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(2, entries.length);
+    chrome.test.assertTrue(entries[0].isDirectory);
+    chrome.test.assertTrue(entries[1].isDirectory);
+    chrome.test.assertEq("Album 1 Name 1899-12-30", entries[0].name);
+    chrome.test.assertEq("Album 2 Name 1899-12-30", entries[1].name);
+    chrome.test.succeed();
+  }
+
+  getAndVerifyDirectoryEntry(picasaGallery.root, "albums", verify);
+}
+
+function FoldersListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(2, entries.length);
+    chrome.test.assertTrue(entries[0].isDirectory);
+    chrome.test.assertTrue(entries[1].isDirectory);
+    chrome.test.assertEq("folder1 1899-12-30", entries[0].name);
+    chrome.test.assertEq("folder2 1899-12-30", entries[1].name);
+    chrome.test.succeed();
+  }
+
+  getAndVerifyDirectoryEntry(picasaGallery.root, "folders", verify);
+}
+
+function Album1ListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(2, entries.length);
+    chrome.test.assertTrue(entries[0].isFile);
+    chrome.test.assertTrue(entries[1].isFile);
+    chrome.test.assertEq("InBoth.jpg", entries[0].name);
+    chrome.test.assertEq("InFirstAlbumOnly.jpg", entries[1].name);
+
+    verifyAllJPEGs(directoryEntry, ["InBoth.jpg", "InFirstAlbumOnly.jpg"],
+                   chrome.test.succeed);
+  }
+
+  getAndVerifyDirectoryEntry(picasaGallery.root,
+                             "albums/Album 1 Name 1899-12-30", verify);
+}
+
+function Album2ListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(2, entries.length);
+    chrome.test.assertTrue(entries[0].isFile);
+    chrome.test.assertTrue(entries[1].isFile);
+    chrome.test.assertEq("InBoth.jpg", entries[0].name);
+    chrome.test.assertEq("InSecondAlbumOnly.jpg", entries[1].name);
+
+    verifyAllJPEGs(directoryEntry, ["InBoth.jpg", "InSecondAlbumOnly.jpg"],
+                   chrome.test.succeed);
+  }
+
+  getAndVerifyDirectoryEntry(picasaGallery.root,
+                             "albums/Album 2 Name 1899-12-30", verify);
+}
+
+function Folder1ListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(2, entries.length);
+    chrome.test.assertTrue(entries[0].isFile);
+    chrome.test.assertTrue(entries[1].isFile);
+    chrome.test.assertEq("InBoth.jpg", entries[0].name);
+    chrome.test.assertEq("InSecondAlbumOnly.jpg", entries[1].name);
+
+    verifyAllJPEGs(directoryEntry, ["InBoth.jpg", "InSecondAlbumOnly.jpg"],
+                   chrome.test.succeed);
+  }
+
+  getAndVerifyDirectoryEntry(picasaGallery.root,
+                             "folders/folder1 1899-12-30", verify);
+}
+
+function Folder2ListingTest(picasaGallery) {
+  function verify(directoryEntry, entries) {
+    chrome.test.assertEq(1, entries.length);
+    chrome.test.assertTrue(entries[0].isFile);
+    chrome.test.assertEq("InFirstAlbumOnly.jpg", entries[0].name);
+
+    verifyAllJPEGs(directoryEntry, ["InFirstAlbumOnly.jpg"],
+                   chrome.test.succeed);
+  }
+
+  getAndVerifyDirectoryEntry(picasaGallery.root,
+                             "folders/folder2 1899-12-30", verify);
+}
+
+function getTest(testFunction) {
+  function getMediaFileSystemsList() {
+    mediaGalleries.getMediaFileSystems(getMediaFileSystemsCallback);
+  }
+
+  function getMediaFileSystemsCallback(results) {
+    for (var i = 0; i < results.length; ++i) {
+      var properties = mediaGalleries.getMediaFileSystemMetadata(results[i]);
+      if (properties.name == "Picasa") {
+        testFunction(results[i]);
+        return;
+      }
+    }
+    chrome.test.fail("Picasa gallery not found");
+  }
+
+  return function() {
+    getMediaFileSystemsList();
+  }
+}
+
+chrome.test.runTests([
+  getTest(GalleryPropertiesTest),
+  getTest(RootListingTest),
+  getTest(AlbumsListingTest),
+  getTest(FoldersListingTest),
+  getTest(Album1ListingTest),
+  getTest(Album2ListingTest),
+  getTest(Folder1ListingTest),
+  getTest(Folder2ListingTest),
+]);
+
+// Create a dummy window to prevent the ExtensionProcessManager from suspending
+// the chrome-test app. Needed because the FileReader events do not qualify as
+// pending callbacks, so the app looks dormant.
+chrome.app.runtime.onLaunched.addListener(function() {
+  chrome.app.window.create('dummy.html', {
+    bounds: {
+      width: 800,
+      height: 600,
+      left: 100,
+      top: 100
+    },
+    minWidth: 800,
+    minHeight: 600
+  });
+});