anchor.diff:    onLoadingError(e) {
       firedEvents.add(e.type);
       event = e;
  -    shouldBe(event.fontfaces.length, 1);
  +    shouldBe(event.fontfaces.length, 4);
       failedFonts = e.fontfaces.map((face){return face.family;}).toList()..sort();
  -    shouldBeList(failedFonts, ['myfont2']);
  +    shouldBeList(failedFonts, ['myfont1', 'myfont2', 'myfont3', 'myfont5']);
       finish();
     }
   
  
positive.code:       /* Test 1: Invalid font data */
        @font-face {
            font-family: myfont1;
            src: url('$root/resources/invalidfont.png') format(opentype);
        }
  
        /* Test 2: Download error */
  
negative.code:       /* Test 5: Multiple errors */
        @font-face {
            font-family: myfont5;
            src: url('resources/IntentionallyMissingFile.otf'), url(data:application/x-truetype-font,));
        }
        </style>
        ''', treeSanitizer: new NullTreeSanitizer());
  