| Index: tests/language_2/generic_methods_type_expression_test.dart
|
| diff --git a/tests/language_2/generic_methods_type_expression_test.dart b/tests/language_2/generic_methods_type_expression_test.dart
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..1107fafedb8467365ebe0a9cff68532342eaea2e
|
| --- /dev/null
|
| +++ b/tests/language_2/generic_methods_type_expression_test.dart
|
| @@ -0,0 +1,65 @@
|
| +// 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.
|
| +//
|
| +// VMOptions=--generic-method-syntax
|
| +
|
| +/// Dart test on the usage of method type arguments in type expressions.
|
| +
|
| +import "package:expect/expect.dart";
|
| +
|
| +bool f1<T>(Object o) => o is T;
|
| +
|
| +bool f2<T>(Object o) => o is List<T>;
|
| +
|
| +bool f3<T>(Object o) => o is! T;
|
| +
|
| +bool f4<T>(Object o) => o is! List<T>;
|
| +
|
| +T f5<T>(Object o) => o as T;
|
| +
|
| +List<T> f6<T>(Object o) => o as List<T>;
|
| +
|
| +Type f7<T>() => T;
|
| +
|
| +class TypeValue<X> {
|
| + Type get value => X;
|
| +}
|
| +
|
| +Type f8<T>() => new TypeValue<List<T>>().value;
|
| +
|
| +bool f9<T>(Object o) => o is Map<T, String>;
|
| +
|
| +class IsMap<A> {
|
| + @NoInline()
|
| + bool check<B>(o) => o is Map<A, B>;
|
| +}
|
| +
|
| +main() {
|
| + String s = "Hello!";
|
| + List<String> ss = <String>[s];
|
| + Expect.isTrue(f1<int>(42));
|
| + Expect.isFalse(f1<String>(42));
|
| + Expect.isTrue(f2<int>(<int>[42]));
|
| + Expect.isFalse(f2<String>(<int>[42])); // `is List<String>` is false.
|
| + Expect.isFalse(f3<int>(42));
|
| + Expect.isTrue(f3<String>(42));
|
| + Expect.isFalse(f4<int>(<int>[42]));
|
| + Expect.isTrue(f4<String>(<int>[42])); // `is! List<dynamic>` is true.
|
| + Expect.equals(f5<String>(s), s); // `s as String == s`
|
| + Expect.throwsCastError(() => f5<int>(s)); // `s as int == s`
|
| + Expect.equals(f6<String>(ss), ss);
|
| + Expect.throwsCastError(() => f6<int>(ss)); // `as List<int>` fails.
|
| + Expect.equals(f7<int>(), int);
|
| +
|
| + // Returns `List<int>`.
|
| + Expect.equals(f8<int>(), new TypeValue<List<int>>().value);
|
| +
|
| + Expect.isTrue(f9<int>(<int, String>{}));
|
| + Expect
|
| + .isTrue(f9<int>(<bool, String>{})); // `is Map<dynamic, String>` is true.
|
| + Expect.isFalse(f9<int>(<int, int>{}));
|
| +
|
| + Expect.isTrue(new IsMap<int>().check<String>(<int, String>{}));
|
| + Expect.isTrue(new IsMap<int>().check<int>(<int, String>{}));
|
| +}
|
|
|