xUnit1018 v2 v3 Error

MemberData must reference a valid member kind

Cause

This rule is triggered when your [MemberData] attribute points to a member which is not of the supported kind (field, property, or method).

Reason for rule

[MemberData] attributes which do not point at one of the supported member kinds will fail at runtime.

How to fix violations

To fix a violation of this rule, update the [MemberData] to point at a valid member kind.

Examples

Violates

using System;
using Xunit;

public class xUnit1018
{
    public static event EventHandler TestData;

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

Does not violate

using System.Collections.Generic;
using Xunit;

public class xUnit1018
{
    public static IEnumerable<object[]> TestData;

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

using System.Collections.Generic;
using Xunit;

public class xUnit1018
{
    public static IEnumerable<object[]> TestData { get; set; }

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

using System.Collections.Generic;
using Xunit;

public class xUnit1018
{
    public static IEnumerable<object[]> TestData() { }

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