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);
+  }
+
+  parentDirectoryEntry.getFile(
+    filename,
+    {create: false},
+    function(fileEntry) { fileEntry.file(verifyFile, chrome.test.fail) },

[vandebo (ex-Chrome), 2013/09/17 21:18:06]

nit: name this function instead of making it inline.

[tommycli, 2013/09/18 15:25:37]

Done.

+    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 runPicasaTest() {
+  var picasaGallery;
+  var rootReadEntriesTotalReturned = 0;
+
+  function getMediaFileSystemsList() {
+    mediaGalleries.getMediaFileSystems(getMediaFileSystemsCallback);
+  }
+
+  function getMediaFileSystemsCallback(results) {
+    chrome.test.assertEq(1, results.length);
+    picasaGallery = results[0];
+
+    var galleryProperties =
+        mediaGalleries.getMediaFileSystemMetadata(picasaGallery);
+    chrome.test.assertFalse(galleryProperties.isRemovable);
+
+    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);
+
+      testAlbumsListing();

[vandebo (ex-Chrome), 2013/09/17 21:18:06]

Instead of chaining between the tests, can you list them all in the runTests
array?

[tommycli, 2013/09/18 15:25:37]

Done.

+    }
+
+    verifyDirectoryEntry(picasaGallery.root, verify);
+  }
+
+  function testAlbumsListing() {
+    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);
+
+      testFoldersListing();
+    }
+
+    getAndVerifyDirectoryEntry(picasaGallery.root, "albums", verify);
+  }
+
+  function testFoldersListing() {
+    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);
+
+      testAlbum1Listing();
+    }
+
+    getAndVerifyDirectoryEntry(picasaGallery.root, "folders", verify);
+  }
+
+  function testAlbum1Listing() {
+    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"],
+                     testAlbum2Listing);
+    }
+
+    getAndVerifyDirectoryEntry(picasaGallery.root,
+                               "albums/Album 1 Name 1899-12-30", verify);
+  }
+
+  function testAlbum2Listing() {
+    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 testAlbum2Listing() {

[vandebo (ex-Chrome), 2013/09/17 21:18:06]

repeated function?

[tommycli, 2013/09/18 15:25:37]

Done.

+    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"],
+                     testFolder1Listing);
+    }
+
+    getAndVerifyDirectoryEntry(picasaGallery.root,
+                               "albums/Album 2 Name 1899-12-30", verify);
+  }
+
+  function testFolder1Listing() {
+    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"],
+                     testFolder2Listing);
+    }
+
+    getAndVerifyDirectoryEntry(picasaGallery.root,
+                               "folders/folder1 1899-12-30", verify);
+  }
+
+  function testFolder2Listing() {
+    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);
+  }
+
+  getMediaFileSystemsList();
+}
+
+chrome.test.runTests([
+  runPicasaTest
+]);
+
+// 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
+  });
+});