BitPackageTest.cs

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Universal charset detector code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *          Kohei TAKETA <k-tak@void.in> (Java port)
 *          Rudi Pettazzi <rudi.pettazzi@gmail.com> (C# port) 
 *
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using NUnit.Framework;
using UtfUnknown.Core;

namespace UtfUnknown.Tests
{
    public class BitPackageTest
    {
        [Test]
        public void TestPack()
        {
            Assert.AreEqual(BitPackage.Pack4bits(0,0,0,0,0,0,0,0), 0);
            Assert.AreEqual(BitPackage.Pack4bits(1,1,1,1,1,1,1,1), 286331153);
            Assert.AreEqual(BitPackage.Pack4bits(2,2,2,2,2,2,2,2), 572662306);
            Assert.AreEqual(BitPackage.Pack4bits(15,15,15,15,15,15,15,15), -1);
        }

        [Test]
        public void TestUnpack()
        {
            int[] data = new int[] {
                BitPackage.Pack4bits(0, 1, 2, 3, 4, 5, 6, 7),
                BitPackage.Pack4bits(8, 9, 10, 11, 12, 13, 14, 15)
            };

            BitPackage pkg = new BitPackage(
                    BitPackage.INDEX_SHIFT_4BITS,
                    BitPackage.SHIFT_MASK_4BITS,
                    BitPackage.BIT_SHIFT_4BITS,
                    BitPackage.UNIT_MASK_4BITS,
                    data);

            for (int i = 0; i < 16; i++) {
                int n = pkg.Unpack(i);
                Assert.AreEqual(n, i);
            }
        }
    }
}