v2 v3   Warning

xUnit1052

"Avoid using 'TheoryData<...>' with types that implement 'ITheoryDataRow'"

Cause

A violation of this rule occurs when creating a data source from TheoryData<...> which includes ITheoryDataRow (or any type which implements it).

Reason for rule

ITheoryDataRule (and derived types, like TheoryDataRule<...>) are intended to be used directly from a collection, like IEnumerable<> or List<>.

How to fix violations

To fix a violation of this rule, replace TheoryData with IEnumeable (or a standard generic collection).

Examples

Violates

using Xunit;

public class xUnit1052
{
    public static TheoryData<TheoryDataRow<int>> Data => [/*...*/];
}

Does not violate

using System.Collections.Generic;
using Xunit;

public class xUnit1052
{
    public static IEnumerable<TheoryDataRow<int>> Data => [/*...*/];
}