wabbajack/Wabbajack.Paths.Test/ExtensionTests.cs

using System;
using Xunit;

namespace Wabbajack.Paths.Test
{
    public class ExtensionTests
    {
        public static Extension DDS = new(".DDS");
        public static Extension Dds = new(".Dds");
        public static Extension DDS2 = new(".DDS");
        public static Extension EMPTY = new("");

        [Fact]
        public void ExtensionsAreEqual()
        {
            Assert.Equal(DDS, DDS);
            Assert.Equal(DDS, DDS2);
            Assert.Equal(DDS, Dds);

            Assert.True(DDS == Dds);
            Assert.True(DDS != EMPTY);

            Assert.NotEqual(EMPTY, DDS);

            Assert.NotEqual(DDS, (object)42);
        }

        [Fact]
        public void CanGetExtensionOfPath()
        {
            Assert.Equal(DDS, ((AbsolutePath)@"c:\foo\bar.dds").Extension);
        }

        [Fact]
        public void ExtensionsHaveConversionOperators()
        {
            Assert.True(".DDS" == (string)DDS);
            Assert.True(DDS == (Extension)".DDs");
        }

        [Fact]
        public void ExtensionsRequireDots()
        {
            Assert.Throws<PathException>(() => new Extension("foo"));
        }

        [Fact]
        public void ExtensionsOverrideObjectMethods()
        {
            Assert.Equal(".DDS", DDS.ToString());
            Assert.Equal(".DDS".GetHashCode(StringComparison.InvariantCultureIgnoreCase), DDS.GetHashCode());
        }

        [Fact]
        public void CanGetExtensionFromPath()
        {
            Assert.Equal(DDS, Extension.FromPath("myfoo.DDS"));
            Assert.Equal(DDS, Extension.FromPath("myfoo.bar.DDS"));
            Assert.Equal(EMPTY, Extension.FromPath("baz"));
        }
    }
}