MSTEST0018 behaves differently on T[] and IEnumerable<T>

[jnyrup]

For this snippet MSTEST0018 is reported when using IEnumerable<MyClass> but not for MyClass[]

using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;

namespace TestProject2;

[TestClass]
public class UnitTest1
{
    [TestMethod]
    [DynamicData(nameof(Data1), DynamicDataSourceType.Method)]
    public void TestMethod1(MyClass _)
    {
    }

    private static MyClass[][] Data1() => [[new(1)], [new(2)]];

    [TestMethod]
    [DynamicData(nameof(Data2), DynamicDataSourceType.Method)]
    public void TestMethod2(MyClass _)
    {
    }

    private static IEnumerable<MyClass[]> Data2() => [[new(1)], [new(2)]];

    public record MyClass(int Id);
}

Both tests runs for each test case, so I'm also not sure why the element type for IEnumerable<T> needs to be object.

[Evangelink]

Definitely a bug! Thanks @jnyrup