Robert Nystrom
2034061433
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com>
25 lines
704 B
Dart
25 lines
704 B
Dart
// Copyright (c) 2018, 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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import "package:expect/expect.dart";
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main() {
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// This is a regression test for http://dartbug.com/34051.
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// Warm-up the subtype cache with a "(int) -> int" closure.
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Expect.isTrue(fooClosure(partialInst(gen)));
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// Test that the generic "(T) -> T" closure raises a type error.
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Expect.throwsTypeError(() => fooClosure(gen));
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}
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FI partialInst(FI arg) => arg;
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T gen<T>(T a) => a;
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final dynamic fooClosure = foo;
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bool foo(FI arg) => arg is FI;
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typedef FI = int Function(int);
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