Stephen Adams
3cec399d2c
BUG= R=eernst@google.com Review URL: https://codereview.chromium.org/2257813003 .
40 lines
1.1 KiB
Dart
40 lines
1.1 KiB
Dart
// Copyright (c) 2016, 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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//
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// DartOptions=--generic-method-syntax
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// VMOptions=--generic-method-syntax
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/// Dart test on the usage of method type arguments in object creation. With
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/// '--generic-method-syntax', the type argument is available at runtime,
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/// but erased to `dynamic`.
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library generic_methods_new_test;
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import "package:expect/expect.dart";
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class C<E> {
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E e;
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C(this.e);
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}
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C<T> f1<T>(T t) => new C<T>(t);
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List<T> f2<T>(T t) => <T>[t];
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Map<T, String> f3<T>(T t) => <T, String>{t: 'hi'};
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main() {
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C c = f1<int>(42);
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List i = f2<String>("Hello!");
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Expect.isTrue(c is C<int> && c is C<String>); // C<dynamic>.
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Expect.isTrue(i is List<String> && i is List<int>); // List<dynamic>.
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Expect.equals(c.e, 42);
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Expect.equals(i[0], "Hello!");
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Map m1 = f3<int>(1);
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Expect.isTrue(m1 is Map<int, String> && m1 is Map<String, String>);
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Expect.isFalse(m1 is Map<int, int>);
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Expect.equals('hi', m1[1]);
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}
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