| // Copyright (c) 2018, 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. |
| |
| /// @assertion Mixin application semantics is mostly unchanged, except that it's |
| /// a compile-time error to apply a mixin to a class that doesn't implement all |
| /// the 'on' type requirements of the mixin declaration, or apply a mixin |
| /// containing super-invocations to a class that doesn't have a concrete |
| /// implementation of the super-invoked members compatible with the |
| /// super-constraint interface. |
| /// |
| /// @description Checks that there is no compile error if a mixin is applied to a |
| /// class that implements all the 'on' type requirements of the mixin |
| /// declaration. Test 'mixin' implementation of 'on' clause interfaces |
| /// @author sgrekhov@unipro.ru |
| |
| import "../../Utils/expect.dart"; |
| |
| class S {} |
| class T {} |
| class X extends S {} |
| class Y extends T {} |
| |
| String console = ""; |
| |
| class A<T> { |
| String get a1 => "A.a1"; |
| set a2(String v) { |
| console = "A:$v"; |
| } |
| |
| String a3() => "A.a3"; |
| String operator +(A v) => a1.substring(0, 1); |
| } |
| |
| abstract class B<T> { |
| String get b1; |
| void set b2(String v); |
| String b3(); |
| String operator -(B v); |
| } |
| |
| class C<X, Y> extends B<Y> with A<X> { |
| String get b1 => "C.b1"; |
| set b2(String v) { |
| console = "C:$v"; |
| } |
| |
| String b3() => "C.b3"; |
| String operator -(B v) => b1.substring(0, 3); |
| } |
| |
| mixin M<X extends S, Y extends T> on A<X>, B<Y> { |
| String get m1 => "m1"; |
| void set m2(String v) { |
| console = "M:$v"; |
| } |
| |
| String m3() => "m3"; |
| } |
| |
| class MA extends C<X, Y> with M<X, Y> { |
| } |
| |
| main() { |
| MA ma = new MA(); |
| |
| Expect.equals("A.a1", ma.a1); |
| ma.a2 = "a2"; |
| Expect.equals("A:a2", console); |
| Expect.equals("A.a3", ma.a3()); |
| Expect.equals("A", ma + ma); |
| |
| Expect.equals("C.b1", ma.b1); |
| ma.b2 = "b2"; |
| Expect.equals("C:b2", console); |
| Expect.equals("C.b3", ma.b3()); |
| Expect.equals("C.b", ma - ma); |
| |
| Expect.equals("m1", ma.m1); |
| ma.m2 = "m2"; |
| Expect.equals("M:m2", console); |
| Expect.equals("m3", ma.m3()); |
| } |