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 cla

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StringSubstring.js

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//-------------------------------------------------------------------------------------------------------

// Copyright (C) Microsoft. All rights reserved.

// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.

//-------------------------------------------------------------------------------------------------------

function test(x, s, e)

{

var result = x.substring(s, e);

WScript.Echo('"' + result + '", length:', result.length);

}

//

// Test regular strings

//

var left = "abcdefghijklmnopqrstuvwxyz";

test(left, 1, 10);

test(left, 0, 5);

test(left, 15, 25);

//

// Test concatenated strings

//

var right = "1234567890";

var c = left + right;

WScript.Echo("Left-only");

test(c, 1, 10);

test(c, 0, 5);

test(c, 15, 25);

WScript.Echo();

WScript.Echo("Right-only");

var o = left.length;

test(c, o + 1, o + 5);

test(c, o, o + 10);

WScript.Echo();

WScript.Echo("Split");

test(c, o - 2, o + 3);

test(c, 0, c.length);

WScript.Echo();

//

// Test parameter validation

//

WScript.Echo("Split");

test(left, 3); // To end of string

test(left, 0, 0);

test(left, 0, 1);