dart-sdk/tests/language_2/generic_methods/new_test.dart
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

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859 B
Dart

// Copyright (c) 2016, 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
import "package:expect/expect.dart";
class C<E> {
E e;
C(this.e);
}
C<T> f1<T>(T t) => new C<T>(t);
List<T> f2<T>(T t) => <T>[t];
Map<T, String> f3<T>(T t) => <T, String>{t: 'hi'};
main() {
C c = f1<int>(42);
List i = f2<String>("Hello!");
Expect.isTrue(c is C<int>);
Expect.isFalse(c is C<String>);
Expect.isTrue(i is List<String>);
Expect.isFalse(i is List<int>);
Expect.equals(c.e, 42);
Expect.equals(i[0], "Hello!");
Map m1 = f3<int>(1);
Expect.isTrue(m1 is Map<int, String>);
Expect.isFalse(m1 is Map<String, String>);
Expect.isFalse(m1 is Map<int, int>);
Expect.equals('hi', m1[1]);
}