xUnit1043 Error

Constructors on classes derived from FactAttribute must be public when used on test methods

Cause

A violation of this rule occurs when a test method tries to use a FactAttribute-derived attribute through a non-public constructor.

Reason for rule

Although the compiler will allow a user to call an internal (or protected internal) constructor, the xUnit.net framework requires that the attribute constructor used is public.

How to fix violations

To fix a violation of this rule, either use an existing public constructor, or change the desired constructor to public visibility.

Examples

Violates

using System;
using Xunit;

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
public class CustomFactAttribute : FactAttribute
{
    internal CustomFactAttribute() { }
}

public class xUnit1043
{
    [CustomFact]
    public void TestMethod() { }
}

Does not violate

using System;
using Xunit;

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
public class CustomFactAttribute : FactAttribute
{
    public CustomFactAttribute() { }
}

public class xUnit1043
{
    [CustomFact]
    public void TestMethod() { }
}