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Change-Id: Iad2963c7f9c184b089dc6d15aa4442f58d194bc2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151983 Reviewed-by: Nicholas Shahan <nshahan@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
22 lines
806 B
Dart
22 lines
806 B
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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// Fuzzy arrows will be eliminated from Dart 2.0 soon. This test checks that
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// implementations have properly removed fuzzy arrow support, both at compile
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// time and at run time. See dartbug.com/29630 for a detailed explanation.
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import "package:expect/expect.dart";
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typedef DynamicToDynamic(x);
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typedef NeverToDynamic(Never x);
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num numToNum(num x) => x;
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main() {
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DynamicToDynamic x = numToNum; //# 01: compile-time error
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NeverToDynamic x = numToNum; //# 02: ok
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Expect.isFalse(numToNum is DynamicToDynamic); //# 03: ok
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Expect.isTrue(numToNum is NeverToDynamic); //# 04: ok
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}
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