JSTests/test262/test/built-ins/Array/prototype/shift/S15.4.4.9_A2_T1.js

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

/*---
info: |
    The shift function is intentionally generic.
    It does not require that its this value be an Array object
esid: sec-array.prototype.shift
description: >
    If ToUint32(length) equal zero, call the [[Put]] method  of this
    object with arguments "length" and 0 and return undefined
---*/

var obj = {};
obj.shift = Array.prototype.shift;

if (obj.length !== undefined) {
  $ERROR('#0: var obj = {}; obj.length === undefined. Actual: ' + (obj.length));
} else {
  //CHECK#1
  var shift = obj.shift();
  if (shift !== undefined) {
    $ERROR('#1: var obj = {}; obj.shift = Array.prototype.shift; obj.shift() === undefined. Actual: ' + (shift));
  }
  //CHECK#2
  if (obj.length !== 0) {
    $ERROR('#2: var obj = {}; obj.shift = Array.prototype.shift; obj.shift(); obj.length === 0. Actual: ' + (obj.length));
  }
}

//CHECK#3
obj.length = undefined;
var shift = obj.shift();
if (shift !== undefined) {
  $ERROR('#3: var obj = {}; obj.length = undefined; obj.shift = Array.prototype.shift; obj.shift() === undefined. Actual: ' + (shift));
}

//CHECK#4
if (obj.length !== 0) {
  $ERROR('#4: var obj = {}; obj.length = undefined; obj.shift = Array.prototype.shift; obj.shift(); obj.length === 0. Actual: ' + (obj.length));
}

//CHECK#5
obj.length = null
var shift = obj.shift();
if (shift !== undefined) {
  $ERROR('#5: var obj = {}; obj.length = null; obj.shift = Array.prototype.shift; obj.shift() === undefined. Actual: ' + (shift));
}

//CHECK#6
if (obj.length !== 0) {
  $ERROR('#6: var obj = {}; obj.length = null; obj.shift = Array.prototype.shift; obj.shift(); obj.length === 0. Actual: ' + (obj.length));
}