using System;

using NUnit.Framework;

public class Program

{

    public static void Main()

    {

        var fixture = new Bridge2396();

        fixture.LastIndexOfWithStringComparisonWorks();

    }

}

​

​

​

public class Bridge2396

{

    [Test]

    public void LastIndexOfWithStringComparisonWorks()

    {

        var s = "abcABC";

        Assert.AreEqual(-1, s.LastIndexOf("s", StringComparison.InvariantCultureIgnoreCase));

        Assert.AreEqual(3, s.LastIndexOf("a", StringComparison.InvariantCultureIgnoreCase));

        Assert.AreEqual(3, s.LastIndexOf("A", StringComparison.InvariantCultureIgnoreCase));

        Assert.AreEqual(1, s.LastIndexOf("b", StringComparison.Ordinal));

        Assert.AreEqual(4, s.LastIndexOf("B", StringComparison.Ordinal));

        Assert.Throws(typeof(ArgumentNullException), () => { s.LastIndexOf(null, StringComparison.Ordinal); });

    }

}