v2 v3 AOT   Error

xUnit1068

"MemberData cannot point to an open generic type"

Cause

A violation of this rule occurs when a [MemberData] attribute points to an open generic class.

Reason for rule

Open generic types cannot be closed at runtime in Native AOT.

How to fix violations

To fix a violation of this rule, close the generic or move the data source to a non-generic type.

Examples

Violates

using Xunit;

public class xUnit1068<T>
{
    public static TheoryData<T> Data = /*...*/;

    [Theory]
    [MemberData(nameof(Data))]
    public void TestMethod(T _) { }
}

Does not violate

using Xunit;

public class xUnit1068
{
    public static TheoryData<int> Data = /*...*/;

    [Theory]
    [MemberData(nameof(Data))]
    public void TestMethod(int _) { }
}

using Xunit;

public class DataSource<T>
{
    public static TheoryData<T> Data = /*...*/;
}

public class xUnit1068
{
    [Theory]
    [MemberData(nameof(Data), MemberType = typeof(DataSource<int>))]
    public void TestMethod(int _) { }
}