Srujan Gaddam
a925f4770f
Strips out the temporary annotation so all the tests without NNBD related changes can run in strong mode. Change-Id: I88f18916f0c5a45a80eddb73941db19984f0bfcf Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/140652 Commit-Queue: Srujan Gaddam <srujzs@google.com> Reviewed-by: Bob Nystrom <rnystrom@google.com>
76 lines
2.0 KiB
Dart
76 lines
2.0 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library url_test;
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import 'dart:async';
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import 'dart:html';
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import 'dart:typed_data';
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import 'package:expect/minitest.dart';
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Blob createImageBlob() {
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var canvas = new CanvasElement();
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canvas.width = 100;
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canvas.height = 100;
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var context = canvas.context2D;
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context.fillStyle = 'red';
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context.fillRect(0, 0, canvas.width, canvas.height);
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var dataUri = canvas.toDataUrl('image/png');
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var byteString = window.atob(dataUri.split(',')[1]);
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var mimeString = dataUri.split(',')[0].split(':')[1].split(';')[0];
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var arrayBuffer = new Uint8List(byteString.length);
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var dataArray = new Uint8List.view(arrayBuffer.buffer);
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for (var i = 0; i < byteString.length; i++) {
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dataArray[i] = byteString.codeUnitAt(i);
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}
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var blob = new Blob([arrayBuffer], 'image/png');
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return blob;
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}
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Future testCreateObjectUrlFromBlob() async {
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final done = new Completer();
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var blob = createImageBlob();
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var url = Url.createObjectUrlFromBlob(blob);
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expect(url.length, greaterThan(0));
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expect(url.startsWith('blob:'), isTrue);
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var img = new ImageElement();
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img.onLoad.listen((_) {
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expect(img.complete, true);
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done.complete();
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});
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img.onError.listen((_) {
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fail('URL failed to load.');
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});
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img.src = url;
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await done.future;
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}
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Future testRevokeObjectUrl() async {
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final done = new Completer();
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var blob = createImageBlob();
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var url = Url.createObjectUrlFromBlob(blob);
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expect(url.startsWith('blob:'), isTrue);
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Url.revokeObjectUrl(url);
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var img = new ImageElement();
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// Image should fail to load since the URL was revoked.
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img.onError.listen(done.complete);
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img.onLoad.listen((_) {
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fail('URL should not have loaded.');
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});
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img.src = url;
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await done.future;
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}
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main() async {
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await testCreateObjectUrlFromBlob();
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await testRevokeObjectUrl();
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}
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