sigmund@google.com
64d7bc5acf
Review URL: https://chromiumcodereview.appspot.com//10248007 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7101 260f80e4-7a28-3924-810f-c04153c831b5
57 lines
1.6 KiB
Dart
57 lines
1.6 KiB
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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class BaseClass {
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var foo;
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BaseClass() { foo = 0; }
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toString() => "BaseClass";
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}
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/**
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* This class declaration causes an intentional type warning as it
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* isn't marked abstract. It is abstract because it doesn't
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* "implement" the field foo.
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*/
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class ImplementsClass implements BaseClass {
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ImplementsClass() {}
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}
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interface ExtendsClass extends BaseClass {}
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/**
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* This class declaration causes an intentional type warning as it
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* isn't marked abstract. It is abstract because it doesn't
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* "implement" the field foo.
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*/
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class ImplementsExtendsClass implements ExtendsClass {
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ImplementsExtendsClass() {}
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}
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main() {
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ImplementsClass c1 = new ImplementsClass();
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ImplementsExtendsClass c2 = new ImplementsExtendsClass();
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try {
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c1.foo;
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Expect.fail('expected a NoSuchMethodException');
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} catch (NoSuchMethodException ex) {
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// Expected error.
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}
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try {
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c2.foo;
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Expect.fail('expected a NoSuchMethodException');
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} catch (NoSuchMethodException ex) {
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// Expected error.
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}
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Expect.equals(true, c1 is BaseClass);
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Expect.equals(true, c1 is !ExtendsClass);
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Expect.equals(true, c2 is BaseClass);
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Expect.equals(true, c2 is ExtendsClass);
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Expect.equals(true, c2 is !ImplementsClass);
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Expect.equals("BaseClass", "${new BaseClass()}");
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// Verify we don't inherit toString from BaseClass
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Expect.notEquals("BaseClass", "${c1}");
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Expect.notEquals("BaseClass", "${c2}");
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}
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