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>
43 lines
1.3 KiB
Dart
43 lines
1.3 KiB
Dart
// Copyright (c) 2019, 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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@JS()
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library array_test;
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import 'package:expect/expect.dart';
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import 'package:js/js.dart';
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import 'package:js/js_util.dart' as js;
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main() {
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testArrayConstructor();
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}
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/// Test that we can access .constructor() on a JS Array instance, regardless
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/// of the reified generic type.
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///
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/// Regression test for https://github.com/dart-lang/sdk/issues/36372
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testArrayConstructor() {
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var list = <int>[1, 2, 3];
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testArray = list;
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// Call the consturctor with `new`.
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var array = js.callConstructor(js.getProperty(testArray, 'constructor'), []);
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var list2 = array as List;
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Expect.listEquals(list2, []);
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Expect.notEquals(list, list2, '$list2 should be a new list');
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// We could return a reified type here, but currently does not to match
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// dart2js, and because the Array is being returned to JS.
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Expect.isFalse(list2 is List<int>,
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'$list2 should not have a reified generic type (it was allocated by JS)');
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list2.addAll([1, 2, 3]);
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Expect.listEquals(list, list2);
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}
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external Object get testArray;
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external set testArray(value);
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