JSTests/test262/test/language/expressions/compound-assignment/S11.13.2_A4.4_T2.1.js

// 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_T2.1
description: >
    Type(x) is different from Type(y) and both types vary between
    Number (primitive or object) and Boolean (primitive and object)
---*/

var x;

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

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

//CHECK#3
x = new Boolean(true);
x += 1;
if (x !== 2) {
  throw new Test262Error('#3: x = new Boolean(true); x += 1; x === 2. Actual: ' + (x));
}

//CHECK#4
x = 1;
x += new Boolean(true);
if (x !== 2) {
  throw new Test262Error('#4: x = 1; x += new Boolean(true); x === 2. Actual: ' + (x));
}

//CHECK#5
x = true;
x += new Number(1);
if (x !== 2) {
  throw new Test262Error('#5: x = true; x += new Number(1); x === 2. Actual: ' + (x));
}

//CHECK#6
x = new Number(1);
x += true;
if (x !== 2) {
  throw new Test262Error('#6: x = new Number(1); x += true; x === 2. Actual: ' + (x));
}

//CHECK#7
x = new Boolean(true);
x += new Number(1);
if (x !== 2) {
  throw new Test262Error('#7: x = new Boolean(true); x += new Number(1); x === 2. Actual: ' + (x));
}

//CHECK#8
x = new Number(1);
x += new Boolean(true);
if (x !== 2) {
  throw new Test262Error('#8: x = new Number(1); x += new Boolean(true); x === 2. Actual: ' + (x));
}