Using complex data types as InlineData for Xunit tests.

XunitTestWithData.cs

using System.Collections.Generic;
using System.Linq;

using Xunit;

namespace PlaygroundXunit
{
    public class UnitTest1
    {
        [Theory]
        [MemberData(nameof(Test1Data))]
        public void Test1Test((string FirstName, string LastName) values)
        {
            Assert.NotNull(values.FirstName);
            Assert.NotNull(values.LastName);
        }

        public static IEnumerable<object[]> Test1Data
        {
            get => new List<(string FirstName, string LastName)>
            {
                ("Jerry", "Nixon"),
                ("Rob", "Bagby")
            }.Select(x => new[] { (object)x });
        }
    }
}

I think this is simpler with TheoryData:

using Xunit;

namespace PlaygroundXunit
{
    public class UnitTest1
    {
        [Theory]
        [MemberData(nameof(Test1Data))]
        public void Test1Test(string firstName, string lastName)
        {
            Assert.NotNull(firstName);
            Assert.NotNull(lastName);
        }

        public static TheoryData<string, string> Test1Data
        {
            get => new TheoryData<string, string>
            {
                { "Jerry", "Nixon" },
                { "Rob", "Bagby" }
            };
        }
    }
}

I agree.