Files
sdk/tests/language_2/generic_methods/closure_test.dart
T
Leaf Petersen b101a7d002 Add language versions to _2 test libraries
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Leaf Petersen <leafp@google.com>
2021-04-26 17:58:57 +00:00

44 lines
910 B
Dart

// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.9
// Test that a generic closure is correctly constructed.
library generic_methods_closure_test;
import "package:expect/expect.dart";
class A {}
class I<T> {}
class B extends I<B> {}
void fun<T>(List<T> list) {
var helper1 = <S>(List<S> list) {
if (list.length > 0) {
Expect.isTrue(list[0] is S);
}
Expect.isTrue(list is List<S>);
Expect.isTrue(list is List<T>);
};
void helper2<S>(List<S> list) {
if (list.length > 0) {
Expect.isTrue(list[0] is S);
}
Expect.isTrue(list is List<S>);
Expect.isTrue(list is List<T>);
}
helper1<T>(list);
helper2<T>(list);
}
main() {
List<B> list = <B>[new B()];
fun<B>(list);
}