test/Regex/captures.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 of regex captures with some examples motivated by WAC.

WScript.Echo(/(ab)|(ac)/.exec("aabc"));
WScript.Echo(/(ab)|(ac)+/.exec("qacbacacd"));
WScript.Echo(/(ab)+|(ac)+/.exec("qababacacd"));
WScript.Echo(/(?:ab)+|(ac)+/.exec("qababacacd"));
WScript.Echo(/(?:ab)+|(?:ac)+/.exec("qababacacd"));

var a = new RegExp('^([^?]+)');
var a1 = a.exec("file://d:\\foo.txt");
WScript.Echo(a1);

var b = new RegExp('^([a-z+.-]+://(?:[^/]*/)*)[^/]*$');
var b1 = b.exec("file://d:\\foo.txt");
WScript.Echo(b1);

var c = b.exec(a.exec("file://d:\\foo.txt")[1])[1];
WScript.Echo(c);

var http = "http://ezedev/WAC/onenoteframe.aspx?Fi=c%3A%5CViewingData%5Cbasefile%5CTest&H=ol&C=0__ezedev&ui=en-US";
WScript.Echo(a.exec(http));
WScript.Echo(b.exec(a.exec(http)[1]));
var d = b.exec(a.exec(http)[1])[1];
WScript.Echo(d);

var d = 'foo bar'.replace(/(foo)|(bar)/g, '[$1$2]');
WScript.Echo(d+"");

var e = "ab".replace(/(.)(.){0}/,'$1$2');
WScript.Echo(e+"");


var groups = {};

function Assert(actual, expected, category, notStrict)
{
    if (!groups[category]) {
        groups[category] = 1;
    } else {
        groups[category]++;
    }

    var condition = (actual === expected);
    if (!!notStrict) {
        condition = (actual == expected)
    }

    if (!condition) {
        WScript.Echo(category + " test " + groups[category] + " failed. Expected: " + expected + ", Actual: " + actual);
    } else {
        WScript.Echo(category + " test " + groups[category] + " passed");
    }
}

var needle = /(bc)/;
var haystack = "abcdef";

haystack.match(needle);
Assert(RegExp.$1, "bc", "numberedRegex", true);
Assert(RegExp.$2, "", "numberedRegex");

needle = /xy/;
haystack.match(needle);
Assert(RegExp.$1, "bc", "numberedRegex");
Assert(RegExp.$2, "", "numberedRegex");