tests/lib/html/filereader_test.dart

// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

library filereader_test;

import 'package:expect/legacy/async_minitest.dart'; // ignore: deprecated_member_use
import 'dart:html';
import 'dart:typed_data';

main() {
  test('readAsText', () {
    var reader = new FileReader();
    reader.onLoad.listen(
      expectAsync((event) {
        var result = reader.result;
        expect(result, equals('hello world'));
      }),
    );
    reader.readAsText(new Blob(['hello ', 'world']));
  });

  test('readAsArrayBuffer', () {
    var reader = new FileReader();
    reader.onLoad.listen(
      expectAsync((event) {
        var result = reader.result;
        expect(result is Uint8List, isTrue);
        expect(result, equals([65, 66, 67]));
      }),
    );
    reader.readAsArrayBuffer(new Blob(['ABC']));
  });

  test('readDataUrl', () {
    var reader = new FileReader();
    reader.onLoad.listen(
      expectAsync((event) {
        String result = reader.result as String;
        expect(result.startsWith('data:'), isTrue);
      }),
    );
    reader.readAsDataUrl(new Blob(['ABC']));
  });
}