| // Copyright (c) 2011, 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. |
| // Dart test program for testing factories. |
| |
| import "package:expect/expect.dart"; |
| |
| class A { |
| factory A(n) { |
| return new A.internal(n); |
| } |
| A.internal(n) : n_ = n {} |
| var n_; |
| } |
| |
| class B { |
| factory B.my() { |
| return new B(3); |
| } |
| B(n) : n_ = n {} |
| var n_; |
| } |
| |
| class FactoryTest { |
| static testMain() { |
| new B.my(); |
| var b = new B.my(); |
| Expect.equals(3, b.n_); |
| var a = new A(5); |
| Expect.equals(5, a.n_); |
| } |
| } |
| |
| // Test compile time error for factories with parameterized types. |
| |
| abstract class Link<T> { |
| factory Link.create() = LinkFactory<T>.create; |
| // ^^^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.WRONG_NUMBER_OF_TYPE_ARGUMENTS |
| // [cfe] Expected 0 type arguments. |
| // ^^^^^^^^^^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.REDIRECT_TO_INVALID_RETURN_TYPE |
| } |
| |
| class LinkFactory { |
| // Compile time error: should be LinkFactory<T> to match abstract class above |
| factory Link.create() { |
| // ^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.INVALID_FACTORY_NAME_NOT_A_CLASS |
| // [cfe] The name of a constructor must match the name of the enclosing class. |
| return LinkFactory._(); |
| } |
| |
| LinkFactory._(); |
| } |
| |
| |
| main() { |
| FactoryTest.testMain(); |
| var a = new Link<int>.create(); |
| // ^ |
| // [cfe] Expected 0 type arguments. |
| } |