JSTests/test262/test/language/expressions/subtraction/S11.6.2_A3_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 x - y returns ToNumber(x) - ToNumber(y)
es5id: 11.6.2_A3_T1.5
description: Type(x) and Type(y) vary between Object object and Function object
---*/

//CHECK#1
if (isNaN({} - function(){return 1}) !== true) {
  $ERROR('#1: {} - function(){return 1} === Not-a-Number. Actual: ' + ({} - function(){return 1}));
}

//CHECK#2
if (isNaN(function(){return 1} - {}) !== true) {
  $ERROR('#2: function(){return 1} - {} === Not-a-Number. Actual: ' + (function(){return 1} - {}));
}

//CHECK#3
if (isNaN(function(){return 1} - function(){return 1}) !== true) {
  $ERROR('#3: function(){return 1} - function(){return 1} === Not-a-Number. Actual: ' + (function(){return 1} - function(){return 1}));
}

//CHECK#4
if (isNaN({} - {}) !== true) {
  $ERROR('#4: {} - {} === Not-a-Number. Actual: ' + ({} - {}));
}