test262/test/language/expressions/compound-assignment/S11.13.2_A3.1_T5.js

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

/*---
info: Operator x @= y uses PutValue(x, x @ y)
es5id: 11.13.2_A3.1_T5
description: Checking Expression and Variable statements for x -= y
---*/

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

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