Johnni Winther
204651f3ab
Change-Id: Ib43d0d71a3ee8b0f0e6d676e6a3e448a107b7ca5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/95180 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Stephen Adams <sra@google.com>
38 lines
1.0 KiB
Dart
38 lines
1.0 KiB
Dart
// Copyright (c) 2017, 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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// Tests that `void` accepts any value and won't throw on non-`null` values.
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// The test is set up in a way that `--trust-type-annotations` and type
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// propagation must not assume that `void` is `null` either.
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import 'package:expect/expect.dart';
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class A {
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void foo() {
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return bar();
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}
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void bar() {}
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}
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class B extends A {
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int bar() => 42;
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}
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// Makes the typing cleaner: the return type here is `dynamic` and we are
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// guaranteed that there won't be any warnings.
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// Dart2js can still infer the type by itself.
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@pragma('dart2js:noInline')
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callFoo(A a) => a.foo();
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main() {
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var a = new A();
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var b = new B();
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// The following line is not throwing, even though `a.foo()` (inside
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// `callFoo`) is supposedly `void`.
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callFoo(b).abs();
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Expect.isNull(callFoo(a));
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Expect.equals(42, callFoo(b));
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}
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