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
15var c = 0;
16var p1 = this[c++];
17assert (p1 === undefined);
18assert (c === 1);
19
20var p2 = this[c--];
21assert (p2 === undefined);
22assert (c === 0);
23
24var p3 = this[++c];
25assert (p3 === undefined);
26assert (c === 1);
27
28var p4 = this[--c];
29assert (p4 === undefined);
30assert (c === 0);
31