JSTests/test262/test/language/expressions/compound-assignment/S11.13.2_A2.1_T1.5.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: Operator uses GetValue
es5id: 11.13.2_A2.1_T1.5
description: >
    Either Type is not Reference or GetBase is not null, check
    opeartor is "x -= y"
---*/

//CHECK#1
var x = 1;
var z = (x -= 1);
if (z !== 0) {
  throw new Test262Error('#1: var x = 1; var z = (x -= 1); z === 0. Actual: ' + (z));
}

//CHECK#2
var x = 1;
var y = 1;
var z = (x -= y);
if (z !== 0) {
  throw new Test262Error('#2: var x = 1; var y = 1; var z = (x -= y); z === 0. Actual: ' + (z));
}