Robert Nystrom
fc1b1ecc71
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
32 lines
846 B
Dart
32 lines
846 B
Dart
// Copyright (c) 2012, 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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// Check fail because of cycles in super class relationship.
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import "package:expect/expect.dart";
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class Foo implements Bar {}
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class C {}
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class Bar
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extends Foo // //# 00: compile-time error
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implements Foo // //# 01: compile-time error
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{}
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class ImplementsC implements C
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, C // //# 02: compile-time error
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{}
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// Spec says: It is a compile-time error if the superclass
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// of a class C appears in the implements clause of C.
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class ExtendsC extends C
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implements C // //# 03: compile-time error
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{}
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main() {
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Expect.isTrue(new Foo() is Foo);
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Expect.isTrue(new ImplementsC() is C);
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Expect.isTrue(new ExtendsC() is C);
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}
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