Test shenanigans

The.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <RuntimeFrameworkVersion>2.0.3</RuntimeFrameworkVersion>
    <IsPackable>false</IsPackable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
    <PackageReference Include="xunit" Version="2.3.1" />
    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
  </ItemGroup>

</Project>

TheTest.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using Xunit;

namespace TestDiffRepro.Tests
{
    public class UnitTest1
    {
        [Theory, ClassData(typeof(TheoryRepro))]
        public void Test1(HttpStatusCode statusCode)
        {
			Assert.True(true);
        }
	}
	public class TheoryRepro : IEnumerable<object[]>
	{
		private static readonly IEnumerable<object[]> Data = Enum.GetValues(typeof(HttpStatusCode))
			.Cast<HttpStatusCode>()
			.Select(statusCode => new object[] { statusCode });

		public IEnumerator<object[]> GetEnumerator() => Data.GetEnumerator();

		IEnumerator IEnumerable.GetEnumerator() => Data.GetEnumerator();
	}
}

Pastebin of full log file for the EAP 9 test run: https://pastebin.com/EynMDkwa