Erik Ernst
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>
44 lines
1.4 KiB
Dart
44 lines
1.4 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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// Test that a torn off method of a generic class is not a generic method,
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// and that it is correctly specialized.
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library generic_methods_generic_class_tearoff_test;
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import "package:expect/expect.dart";
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class A<T> {
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T fun(T t) => t;
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}
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typedef Int2Int = int Function(int);
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typedef String2String = String Function(String);
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typedef Object2Object = Object Function(Object);
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typedef GenericMethod = T Function<T>(T);
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main() {
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A<int> x = new A<int>();
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var f = x.fun; // The type of f should be 'int Function(Object?)'.
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A<String> y = new A<String>();
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var g = y.fun; // The type of g should be 'String Function(Object?)'.
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A z = new A();
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var h = z.fun; // The type of h should be 'dynamic Function(Object?)'.
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Expect.isTrue(f is Int2Int);
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Expect.isTrue(f is! String2String);
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Expect.isTrue(f is Object2Object);
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Expect.isTrue(f is! GenericMethod);
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Expect.isTrue(g is! Int2Int);
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Expect.isTrue(g is String2String);
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Expect.isTrue(g is Object2Object);
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Expect.isTrue(g is! GenericMethod);
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Expect.isTrue(h is! Int2Int);
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Expect.isTrue(h is! String2String);
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Expect.equals(hasUnsoundNullSafety, h is Object2Object);
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Expect.isTrue(h is! GenericMethod);
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}
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