xUnit1016 Error

MemberData must reference a public member

Cause

This rule is triggered when your [MemberData] attribute points to a non-public member.

Reason for rule

[MemberData] attributes may only point at public members, or else they will fail at runtime.

How to fix violations

To fix a violation of this rule, make the data member public visibility.

Examples

Violates

using System.Collections.Generic;
using Xunit;

public class xUnit1016
{
    protected static IEnumerable<object[]> TestData;

    [Theory]
    [MemberData(nameof(TestData))]
    public void TestMethod(string greeting, int age) { }
}

Does not violate

using System.Collections.Generic;
using Xunit;

public class xUnit1016
{
    public static IEnumerable<object[]> TestData;

    [Theory]
    [MemberData(nameof(TestData))]
    public void TestMethod(string greeting, int age) { }
}