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using System;
using System.Collections.Generic;
using System.Text;
using NUnit.Framework;
using XenAdmin.Core;

namespace XenAdminTests.UnitTests
{
    [TestFixture, Category(TestCategories.Unit)]
    class NaturalCompareTest
    {
        [Test, Sequential]
        public void Compare(
            [Values("a",  "", "a", "1",  "1",       "", "123abc", "abc123", "abc123ax", "foo bar",      "Windows 2000",  "h10",  "h9", "h 9", "VM-123",  "VM-334",  "VM-334",  "abc",  "zzz", "a", "B", "a",  "win95",  "Win95")] string a,
            [Values("b", "a",  "", "2", "10", "abc123", "abc123", "123abc", "abc123bx", "foo bar1", "Windows 2000 SP1", "h112", "h10", "h10", "VM-333", "VM-125x", "VM-1252", "abcd", "abcd", "B", "c", "A", "Win100", "win100")] string b,
            [Values( -1,  -1,  +1,  -1,   -1,       -1,       -1,       +1,         -1,         -1,                 -1,     -1,    -1,    -1,       -1,        +1,        -1,     -1,     +1,  -1,  -1,   0,       -1,       -1)] int result)
        {
            Assert.AreEqual(result, Clamp(StringUtility.NaturalCompare(a, b)));
            Assert.AreEqual(-result, Clamp(StringUtility.NaturalCompare(b, a)));
            Assert.AreEqual(0, StringUtility.NaturalCompare(a, a));
            Assert.AreEqual(0, StringUtility.NaturalCompare(b, b));
        }

        private int Clamp(int x)
        {
            return x < 0 ? -1 :
                x > 0 ? 1 :
                0;
        }
    }
}