src/third_party/mozjs-45/js/src/tests/test262/ch11/11.6/11.6.1/S11.6.1_A3.1_T2.5.js

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

/**
 * If Type(Primitive(x)) is not String and Type(Primitive(y)) is not String, then operator x + y returns ToNumber(x) + ToNumber(y)
 *
 * @path ch11/11.6/11.6.1/S11.6.1_A3.1_T2.5.js
 * @description Type(Primitive(x)) is different from Type(Primitive(y)) and both types vary between Boolean (primitive or object) and Null
 */

//CHECK#1
if (true + null !== 1) {
  $ERROR('#1: true + null === 1. Actual: ' + (true + null));
}

//CHECK#2
if (null + true !== 1) {
  $ERROR('#2: null + true === 1. Actual: ' + (null + true));
}

//CHECK#3
if (new Boolean(true) + null !== 1) {
  $ERROR('#3: new Boolean(true) + null === 1. Actual: ' + (new Boolean(true) + null));
}

//CHECK#4
if (null + new Boolean(true) !== 1) {
  $ERROR('#4: null + new Boolean(true) === 1. Actual: ' + (null + new Boolean(true)));
}