Support png wallpapers

chrome/test/data/extensions/api_test/wallpaper_manager/test.js

 // Copyright (c) 2012 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.
 
 // wallpaperPrivate api test
 // browser_tests --gtest_filter=ExtensionApiTest.wallpaperPrivate
 
 var pass = chrome.test.callbackPass;
 var fail = chrome.test.callbackFail;
 
 chrome.test.getConfig(function(config) {
-  var wallpaper;
+  var wallpaperJpeg;
+  var wallpaperPng;
   var wallpaperStrings;
   var requestImage = function(url, onLoadCallback) {
     var wallpaperRequest = new XMLHttpRequest();
     wallpaperRequest.open('GET', url, true);
     wallpaperRequest.responseType = 'arraybuffer';
     try {
       wallpaperRequest.send(null);
       wallpaperRequest.onloadend = function(e) {
         onLoadCallback(wallpaperRequest.status, wallpaperRequest.response);
       };
     } catch (e) {
       console.error(e);
       chrome.test.fail('An error thrown when requesting wallpaper.');
     };
   };
   chrome.test.runTests([
     function getWallpaperStrings() {
       chrome.wallpaperPrivate.getStrings(pass(function(strings) {
         wallpaperStrings = strings;
       }));
     },
     function setOnlineJpegWallpaper() {
       var url = "http://a.com:PORT/files/extensions/api_test" +
           "/wallpaper_manager/test.jpg";
       url = url.replace(/PORT/, config.testServer.port);
       requestImage(url, function(requestStatus, response) {
         if (requestStatus === 200) {
-          wallpaper = response;
-          chrome.wallpaperPrivate.setWallpaper(wallpaper,
+          wallpaperJpeg = response;
+          chrome.wallpaperPrivate.setWallpaper(wallpaperJpeg,
                                                'CENTER_CROPPED',
                                                url,
                                                pass(function() {
             chrome.wallpaperPrivate.setCustomWallpaperLayout('CENTER',
                 fail('Only custom wallpaper can change layout.'));
           }));
         } else {
           chrome.test.fail('Failed to load test.jpg from local server.');
         }
       });
     },
     function setCustomJpegWallpaper() {
-      chrome.wallpaperPrivate.setCustomWallpaper(wallpaper,
+      chrome.wallpaperPrivate.setCustomWallpaper(wallpaperJpeg,
                                                  'CENTER_CROPPED',
                                                  true,
                                                  '123',
                                                  pass(function(thumbnail) {
         chrome.wallpaperPrivate.setCustomWallpaperLayout('CENTER',
                                                          pass(function() {
           chrome.wallpaperPrivate.setCustomWallpaperLayout('STRETCH', pass());
         }));
       }));
     },
-    function getCustomWallpaperThumbnail() {
-      chrome.wallpaperPrivate.getOfflineWallpaperList('CUSTOM',
-                                                      pass(function(lists) {
-        chrome.test.assertEq(1, lists.length);
-        chrome.wallpaperPrivate.getThumbnail(lists[0], 'CUSTOM',
-                                             pass(function(data) {
-          chrome.test.assertNoLastError();
-        }));
-      }));
+    function setCustomPngWallpaper() {
+      var url = "http://a.com:PORT/files/extensions/api_test" +
+          "/wallpaper_manager/test.png";
+      url = url.replace(/PORT/, config.testServer.port);
+      requestImage(url, function(requestStatus, response) {
+        if (requestStatus === 200) {
+          wallpaperPng = response;
+          chrome.wallpaperPrivate.setCustomWallpaper(wallpaperPng,
+                                                     'CENTER_CROPPED',
+                                                     true,
+                                                     '123',
+                                                     pass(function(thumbnail) {
+            chrome.wallpaperPrivate.setCustomWallpaperLayout('CENTER',
+                                                             pass(function() {
+              chrome.wallpaperPrivate.setCustomWallpaperLayout('STRETCH',
+                                                               pass());
+            }));
+          }));
+        } else {
+          chrome.test.fail('Failed to load test.png from local server.');
+        }
+      });
     },
     function setCustomJepgBadWallpaper() {
       var url = "http://a.com:PORT/files/extensions/api_test" +
           "/wallpaper_manager/test_bad.jpg";
       url = url.replace(/PORT/, config.testServer.port);
       requestImage(url, function(requestStatus, response) {
         if (requestStatus === 200) {
           var badWallpaper = response;
           chrome.wallpaperPrivate.setCustomWallpaper(badWallpaper,
               'CENTER_CROPPED', false, '123',
@@ skipping 19 matching lines @@
     function getAndSetThumbnail() {
       var url = "http://a.com:PORT/files/extensions/api_test" +
           "/wallpaper_manager/test.jpg";
       url = url.replace(/PORT/, config.testServer.port);
       chrome.wallpaperPrivate.getThumbnail(url, 'ONLINE', pass(function(data) {
         chrome.test.assertNoLastError();
         if (data) {
           chrome.test.fail('Thumbnail is not found. getThumbnail should not ' +
                            'return any data.');
         }
-        chrome.wallpaperPrivate.saveThumbnail(url, wallpaper, pass(function() {
+        chrome.wallpaperPrivate.saveThumbnail(url, wallpaperJpeg,
+                                              pass(function() {
           chrome.test.assertNoLastError();
           chrome.wallpaperPrivate.getThumbnail(url, 'ONLINE',
                                                pass(function(data) {
             chrome.test.assertNoLastError();
             // Thumbnail should already be saved to thumbnail directory.
-            chrome.test.assertEq(wallpaper, data);
+            chrome.test.assertEq(wallpaperJpeg, data);
           }));
         }));
       }));
     },
     function getOfflineWallpaperList() {
       chrome.wallpaperPrivate.getOfflineWallpaperList('ONLINE',
                                                       pass(function(list) {
         // We have previously saved test.jpg in wallpaper directory.
         chrome.test.assertEq('test.jpg', list[0]);
         // Saves the same wallpaper to wallpaper directory but name it as
         // test1.jpg.
-        chrome.wallpaperPrivate.setWallpaper(wallpaper,
+        chrome.wallpaperPrivate.setWallpaper(wallpaperJpeg,
                                              'CENTER_CROPPED',
                                              'http://dummyurl/test1.jpg',
                                              pass(function() {
           chrome.wallpaperPrivate.getOfflineWallpaperList('ONLINE',
                                                           pass(function(list) {
             chrome.test.assertEq('test.jpg', list[0]);
             chrome.test.assertEq('test1.jpg', list[1]);
           }));
         }));
       }));
     }
   ]);
 });