Leaf Petersen
b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
28 lines
808 B
Dart
28 lines
808 B
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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// @dart = 2.9
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import 'dart:html';
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import 'package:expect/minitest.dart';
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main() {
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var isShadowRoot = predicate((x) => x is ShadowRoot, 'is a ShadowRoot');
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test('ShadowRoot supported', () {
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var isSupported = ShadowRoot.supported;
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// If it's supported, then it should work. Otherwise should fail.
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if (isSupported) {
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var div = new DivElement();
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var shadowRoot = div.createShadowRoot();
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expect(shadowRoot, isShadowRoot);
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expect(div.shadowRoot, shadowRoot);
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} else {
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expect(() => new DivElement().createShadowRoot(), throws);
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}
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});
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}
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