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7e756d6f86
Change-Id: Iee96b1e254f17ee0b1b7b309cc807bf874a1491e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151982 Auto-Submit: Bob Nystrom <rnystrom@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com>
41 lines
997 B
Dart
41 lines
997 B
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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import 'package:expect/expect.dart';
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class A {}
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class B extends A {}
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class Foo<T extends A> {
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String foo(T x) {
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if (x is B) {
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var list = [x];
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return list.runtimeType.toString();
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}
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return '';
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}
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List<T> bar(T x) {
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var tlist = <T>[];
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if (x is B) {
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var list = [x];
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tlist = list;
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}
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return tlist;
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}
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}
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main() {
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var foo = new Foo<B>();
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var b = new B();
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// List class has many different platform specific implementations
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// so we can't rely on the fact that all of them have the same
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// user visible name. Instead we build a name for List<B> from List<A>.
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final expected = (<A>[]).runtimeType.toString().replaceAll('<$A>', '<$B>');
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Expect.equals(expected, foo.foo(b));
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Expect.listEquals([b], foo.bar(b));
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}
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