third_party/WebKit/LayoutTests/fast/files/read-blob-as-array-buffer.html

   1 <!DOCTYPE html>
   2 <html>
   3 <body>
   4 <script src="../../resources/testharness.js"></script>
   5 <script src="../../resources/testharnessreport.js"></script>
   6 <script type="text/javascript">
   7 var test = async_test("Test reading data from a blob as an ArrayBuffer");
   8
   9 var onloadstartSeen = false;
  10
  11 test.step(function() {
  12     var blob = new Blob(["HelloWorld"]);
  13     var reader = new FileReader();
  14     assert_equals(reader.readyState, reader.EMPTY,
  15                   "reader.readyState");
  16     reader.readAsArrayBuffer(blob);
  17     reader.onloadstart = test.step_func(function() {
  18         assert_false(onloadstartSeen, "onloadstartSeen");
  19         onloadstartSeen = true;
  20
  21         assert_equals(reader.readyState, reader.LOADING,
  22                       "reader.readyState");
  23         assert_equals(reader.error, null, "reader.error");
  24         assert_not_equals(reader.result, null, "reader.result");
  25         assert_true(reader.result.byteLength >= 0 &&
  26                     reader.result.byteLength <= 10,
  27                     "reader.result.byteLength between 0 and 10 inclusive");
  28     });
  29     reader.onabort = test.step_func(function() {
  30         assert_unreached("onabort invoked on reader");
  31     });
  32     reader.onerror = test.step_func(function() {
  33         assert_unreached("onerror invoked on reader");
  34     });
  35     reader.onloadend = test.step_func(function() {
  36         assert_equals(reader.readyState, reader.DONE,
  37                       "reader.readyState");
  38         assert_equals(reader.error, null, "reader.error");
  39         assert_not_equals(reader.result, null, "reader.result");
  40         assert_equals(reader.result.byteLength, 10,
  41                       "reader.result.byteLength");
  42         test.done();
  43     });
  44 });
  45 </script>
  46 </body>
  47 </html>