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3a7eeb6315
Change-Id: If3912d75c5f89a741299b2fae4299d01ac928eec Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/170424 Reviewed-by: Lasse R.H. Nielsen <lrn@google.com> Reviewed-by: Michael Thomsen <mit@google.com> Reviewed-by: Mayank Patke <fishythefish@google.com> Commit-Queue: Erik Ernst <eernst@google.com>
34 lines
1 KiB
Dart
34 lines
1 KiB
Dart
// Copyright (c) 2013, 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 test program for constructors and initializers.
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// Check function subtyping casts.
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import 'package:expect/expect.dart';
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typedef void Foo<T>(T t);
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typedef void Bar(int i);
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class Class<T> {
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test(bool expectedResult, var o, String typeName) {
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if (expectedResult) {
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Expect.isNotNull(o as Foo<T>, "bar as Foo<$typeName>");
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} else {
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Expect.throws(() => o as Foo<T>, (e) => true, "bar as Foo<$typeName>");
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}
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Expect.isNotNull(o as Bar, "bar as Bar");
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}
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}
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void bar(int i) {}
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void main() {
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new Class<dynamic>().test(false, bar, "dynamic");
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new Class<Object>().test(false, bar, "Object");
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new Class<Null>().test(hasUnsoundNullSafety, bar, "Null");
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new Class<Never>().test(true, bar, "Never");
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new Class<int>().test(true, bar, "int");
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new Class<bool>().test(false, bar, "bool");
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}
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