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using System;
using System.Globalization;
using System.Reflection;
using Xunit.Sdk;
namespace Xunit
/// <summary>
/// Provides a data source for a data theory, with the data coming from one of the following sources:
/// 1. A static property
/// 2. A static field
/// 3. A static method (with parameters)
/// The member must return something compatible with IEnumerable&lt;object[]&gt; with the test data.
/// Caution: the property is completely enumerated by .ToList() before any test is run. Hence it should return independent object sets.
/// </summary>
[DataDiscoverer("Xunit.Sdk.MemberDataDiscoverer", "xunit.core")]
[AttributeUsage(AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
public sealed class MemberDataAttribute : MemberDataAttributeBase
/// <summary>
/// Initializes a new instance of the <see cref="MemberDataAttribute"/> class.
/// </summary>
/// <param name="memberName">The name of the public static member on the test class that will provide the test data</param>
/// <param name="parameters">The parameters for the member (only supported for methods; ignored for everything else)</param>
public MemberDataAttribute(string memberName, params object[] parameters)
: base(memberName, parameters) { }
/// <inheritdoc/>
protected override object[] ConvertDataItem(MethodInfo testMethod, object item)
if (item == null)
return null;
var array = item as object[];
if (array == null)
throw new ArgumentException($"Property {MemberName} on {MemberType ?? testMethod.DeclaringType} yielded an item that is not an object[]");
return array;