| // Copyright (c) 2019, 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. |
| |
| // @dart = 2.9 |
| |
| @JS() |
| library array_test; |
| |
| import 'package:expect/expect.dart'; |
| import 'package:js/js.dart'; |
| import 'package:js/js_util.dart' as js; |
| |
| main() { |
| testArrayConstructor(); |
| } |
| |
| /// Test that we can access .constructor() on a JS Array instance, regardless |
| /// of the reified generic type. |
| /// |
| /// Regression test for https://github.com/dart-lang/sdk/issues/36372 |
| testArrayConstructor() { |
| var list = <int>[1, 2, 3]; |
| testArray = list; |
| |
| // Call the consturctor with `new`. |
| var array = js.callConstructor(js.getProperty(testArray, 'constructor'), []); |
| var list2 = array as List; |
| Expect.listEquals(list2, []); |
| Expect.notEquals(list, list2, '$list2 should be a new list'); |
| |
| // We could return a reified type here, but currently does not to match |
| // dart2js, and because the Array is being returned to JS. |
| Expect.isFalse(list2 is List<int>, |
| '$list2 should not have a reified generic type (it was allocated by JS)'); |
| |
| list2.addAll([1, 2, 3]); |
| Expect.listEquals(list, list2); |
| } |
| |
| external Object get testArray; |
| external set testArray(value); |