mirror of https://github.com/tc39/test262.git
41 lines
951 B
JavaScript
41 lines
951 B
JavaScript
// Copyright 2009 the Sputnik authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
info: The production x += y is the same as x = x + y
|
|
es5id: 11.13.2_A4.4_T2.3
|
|
description: >
|
|
Type(x) is different from Type(y) and both types vary between
|
|
Number (primitive or object) and Undefined
|
|
---*/
|
|
|
|
var x;
|
|
|
|
//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));
|
|
}
|