ui/file_manager/gallery/js/gallery_item_unittest.js

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 /**
   6  * Mock of ImageUtil.
   7  */
   8 var ImageUtil = {
   9   getMetricName: function() {},
  10   metrics: {
  11     recordEnum: function() {},
  12     recordInterval: function() {},
  13     startInterval: function() {}
  14   }
  15 };
  16
  17 /**
  18  * Mock of ImageEncoder
  19  */
  20 var ImageEncoder = {
  21   encodeMetadata: function() {},
  22   getBlob: function() {}
  23 };
  24
  25 /**
  26  * Load time data.
  27  */
  28 loadTimeData.data = {
  29   DRIVE_DIRECTORY_LABEL: '',
  30   DOWNLOADS_DIRECTORY_LABEL: ''
  31 };
  32
  33 /**
  34  * Tests for GalleryItem#saveToFile.
  35  */
  36 function testSaveToFile(callback) {
  37   var fileSystem = new MockFileSystem('volumeId');
  38   fileSystem.populate(['/test.jpg']);
  39   var entry = fileSystem.entries['/test.jpg'];
  40   entry.createWriter = function(callback) {
  41     callback({
  42       write: function() {
  43         Promise.resolve().then(function() {
  44           this.onwriteend();
  45         }.bind(this));
  46       },
  47       truncate: function() {
  48         this.write();
  49       }
  50     });
  51   };
  52   var fetchedMediaCleared = false;
  53   var metadataCache = {
  54     getLatest: function(entries, type, callback) {
  55       callback([{name: 'newMetadata'}]);
  56     },
  57     clear: function(entries, type) {
  58       fetchedMediaCleared = true;
  59     }
  60   };
  61   var item = new Gallery.Item(
  62       entry,
  63       {isReadOnly: false},
  64       {name: 'oldMetadata'},
  65       metadataCache,
  66       /* original */ true);
  67   assertEquals('oldMetadata', item.getMetadata().name);
  68   assertFalse(fetchedMediaCleared);
  69   reportPromise(
  70       new Promise(item.saveToFile.bind(
  71           item,
  72           {getLocationInfo: function() { return {}; }},
  73           null,
  74           true,
  75           document.createElement('canvas'))).then(function() {
  76             assertEquals('newMetadata', item.getMetadata().name);
  77             assertTrue(fetchedMediaCleared);
  78           }), callback);
  79 }