| // Copyright 2009 the Sputnik authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /** |
| * The production x -= y is the same as x = x - y |
| * |
| * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.4.js |
| * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined |
| */ |
| |
| //CHECK#1 |
| x = 1; |
| x -= undefined; |
| if (isNaN(x) !== true) { |
| $ERROR('#1: x = 1; x -= undefined; x === Not-a-Number. Actual: ' + (x)); |
| } |
| |
| //CHECK#2 |
| x = undefined; |
| x -= 1; |
| if (isNaN(x) !== true) { |
| $ERROR('#2: x = undefined; x -= 1; x === Not-a-Number. Actual: ' + (x)); |
| } |
| |
| //CHECK#3 |
| x = new Number(1); |
| x -= undefined; |
| if (isNaN(x) !== true) { |
| $ERROR('#3: x = new Number(1); x -= undefined; x === Not-a-Number. Actual: ' + (x)); |
| } |
| |
| //CHECK#4 |
| x = undefined; |
| x -= new Number(1); |
| if (isNaN(x) !== true) { |
| $ERROR('#4: x = undefined; x -= new Number(1); x === Not-a-Number. Actual: ' + (x)); |
| } |
| |