blob: e7de7422a0e72b4e9016e9ce28aeb200d09eb7a8 [file] [log] [blame]
* 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 In a mixin declaration like
* mixin A<X extends S, Y extends T> on B, C implements D, E { body }
* the on clause declares the interfaces B and C as super-class constraints of
* the mixin. Having a super-class constaint allows the mixin declaration
* instance members to perform super-invocations (like if they are
* allowed by a class implementing both B and C. The mixin introduced by A can
* then only be applied to classes that implement both B and C.
* @description Checks that it is no compile error if mixin is applied to the
* class which does implement required interface
* @author
import "../../Utils/expect.dart";
String console;
class A {
bar(num n) {
console = "A";
class B extends A {
bar(covariant int i) {
console = "B";
mixin M on A {
test() {;
class MA extends B with M {}
main() {
new MA().test();
Expect.equals("B", console);