JSTests/ChakraCore/test/Array/array_splice.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

//Test odd parameters
var a = [0, 1, 2, 3, 4, 5, 6];
var x = a.splice(-100, -100);
WScript.Echo(a);
WScript.Echo(x);

x = a.splice();
WScript.Echo(a);
WScript.Echo(x);

x = a.splice(0);
WScript.Echo(a);
WScript.Echo(x);

var x = a.splice(0, 0);
WScript.Echo(a);
WScript.Echo(x);


var x = a.splice(1, -4);
WScript.Echo(a);
WScript.Echo(x);

var x = a.splice(7, -4, 8, 9, 10);
WScript.Echo(a);
WScript.Echo(x);

var x = a.splice(20, 40);
WScript.Echo(a);
WScript.Echo(x);

var x = a.splice(-20, 4, 11, 12);
WScript.Echo(a);
WScript.Echo(x);

x = a.splice(-100, -100);
WScript.Echo(a);
WScript.Echo(x);

//Test array
var b = [8,9];
var c = [11,12];

x = a.splice(5,1);
WScript.Echo(x);
WScript.Echo(a);

x = a.splice(2, 2, b, c);
WScript.Echo(x);
WScript.Echo(a);

x = a.splice(-2, -2, b, c);
WScript.Echo(x);
WScript.Echo(a);

x = a.splice(10, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b, b);
WScript.Echo(x);
WScript.Echo(a);

var d = [1, [2, 3, 4], [5, 6, 7]];
x = a.splice(5, 1, d);
WScript.Echo(x);
WScript.Echo(a);

var f = new Object();
f.x = 0;
f.y = 1;
f.z = 2;

x = a.splice(1,2, f, "hello");
WScript.Echo(x);
WScript.Echo(a);


//Test object
var x = new Object();

x.length = 6;
x[0] = 1;
x[1] = 2;
x[2] = 3;
x[3] = 4;
x[4] = 5;
x[5] = 6;


x.foo = Array.prototype.splice;
WScript.Echo(x.length);
var y = x.foo(0, 1, 9, 10, 11, 12);
WScript.Echo(y);
WScript.Echo(x.length);

y = x.foo(0, 9);
WScript.Echo(y);
WScript.Echo(x.length);

y = x.foo(0, 0, 1, 2, 3, 4, 5, 6);
WScript.Echo(y);
WScript.Echo(x.length);

y = x.foo(3, 3, 7);
WScript.Echo(y);
WScript.Echo(x.length);

y = x.foo(0, 8);
WScript.Echo(y);
WScript.Echo(x.length);

//Test string
x = new String("hello world");
x.foo = Array.prototype.splice;
y = undefined;
try
{
 y = x.foo(0, 5);
}
catch(e)
{
 if (!e instanceof TypeError) throw(e);
 WScript.Echo(y);
 WScript.Echo(x);
}

try
{
 y = x.foo(0, 5);
}
catch(e)
{
 if (!e instanceof TypeError) throw(e);
 WScript.Echo(y);
 WScript.Echo(x);
}

try
{
 y = x.foo(0, 13);
}
 catch(e)
{
 if (!e instanceof TypeError) throw(e);
 WScript.Echo(y);
 WScript.Echo(x);
}

WScript.Echo("Test: splice when the item to replace is not writable."); // WOOB: 1139812
var a = {};
Object.defineProperty(a, "0", { value: 0 });
Object.defineProperty(a, "1", { value: 1 });
a.length = 2;
try {
  Array.prototype.splice.apply(a, [0, 1, 'z']);
} catch (ex) {
  WScript.Echo("e instanceOf TypeError = " + (ex instanceof TypeError));
}
WScript.Echo("a.length = " + a.length);

a = new Array(1000);
x = a.splice(1, 17, "a");

function test0()
{
    var arr = [0,1,2,3,4,5,6,7,8,9];
    for(var __loopvar4 = 0; __loopvar4 < 2; __loopvar4++)
    {
      arr.length --;
      arr.splice(3,1,31,32,33);
    }
    return arr.length;
}
WScript.Echo("arr.length = " + test0());