xUnit1015 Error

MemberData must reference an existing member

Cause

This rule is triggered when a [MemberData] attribute does not point to a member.

Reason for rule

The [MemberData] attribute must point to a valid data member to provide data, or else it will fail at runtime. Using nameof is a good way to get compiler and Intellisense help to ensure you are using a valid member name.

How to fix violations

To fix a violation of this rule, update the name used in [MemberData] to point to at a data member.

Examples

Violates

using System.Collections.Generic;
using Xunit;

public class xUnit1015
{
    public static IEnumerable<object[]> TestData;

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

Does not violate

using System.Collections.Generic;
using Xunit;

public class xUnit1015
{
    public static IEnumerable<object[]> TestData;

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