1/* Copyright JS Foundation and other contributors, http://js.foundation
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 order = 0;
17
18 var Mixin1 = (superclass) => class extends superclass {
19   foo () {
20     assert (order++ == 1)
21     if (super.foo) {
22       super.foo ();
23     }
24   }
25 };
26
27 var Mixin2 = (superclass) => class extends superclass {
28   foo () {
29     assert (order++ == 2)
30     if (super.foo) {
31       assert (super.foo () === 5);
32     }
33   }
34 };
35
36 class S {
37   foo () {
38     assert (order++ == 3)
39     return 5;
40   }
41 }
42
43 class C extends Mixin1 (Mixin2 (S)) {
44   foo () {
45     assert (order++ == 0)
46     super.foo ();
47   }
48 }
49
50 new C ().foo ()
51