fune/testing/web-platform/tests/FileAPI/reading-data-section/filereader_readAsDataURL.any.js

// META: title=FileAPI Test: FileReader.readAsDataURL

async_test(function(testCase) {
  var blob = new Blob(["TEST"]);
  var reader = new FileReader();

  reader.onload = this.step_func(function(evt) {
    assert_equals(reader.readyState, reader.DONE);
    testCase.done();
  });
  reader.onloadstart = this.step_func(function(evt) {
    assert_equals(reader.readyState, reader.LOADING);
  });
  reader.onprogress = this.step_func(function(evt) {
    assert_equals(reader.readyState, reader.LOADING);
  });

  reader.readAsDataURL(blob);
}, 'FileReader readyState during readAsDataURL');

async_test(function(testCase) {
  var blob = new Blob(["TEST"], { type: 'text/plain' });
  var reader = new FileReader();

  reader.onload = this.step_func(function() {
    assert_equals(reader.result, "data:text/plain;base64,VEVTVA==");
    testCase.done();
  });
  reader.readAsDataURL(blob);
}, 'readAsDataURL result for Blob with specified MIME type');

async_test(function(testCase) {
  var blob = new Blob(["TEST"]);
  var reader = new FileReader();

  reader.onload = this.step_func(function() {
    assert_equals(reader.result,
                  "data:application/octet-stream;base64,VEVTVA==");
    testCase.done();
  });
  reader.readAsDataURL(blob);
}, 'readAsDataURL result for Blob with unspecified MIME type');

async_test(function(testCase) {
  var blob = new Blob([]);
  var reader = new FileReader();

  reader.onload = this.step_func(function() {
    assert_equals(reader.result,
                  "data:application/octet-stream;base64,");
    testCase.done();
  });
  reader.readAsDataURL(blob);
}, 'readAsDataURL result for empty Blob');