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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections;
namespace Xunit;
/// <summary>
/// Xunit compatible readonly theory data. Can be constructed around <see cref="TheoryData"/>.
/// </summary>
/// <remarks>
/// <para>
/// This type avoids inadvertently adding data, which is of a particular concern when broadly sharing test data.
/// </para>
/// </remarks>
public class ReadOnlyTheoryData : IEnumerable<object?[]>
{
private readonly IEnumerable<object?[]> _data;
public ReadOnlyTheoryData(IEnumerable<object?[]> data) => _data = data;
public ReadOnlyTheoryData(IEnumerable data)
=> _data = data.Cast<object>().Select(i => new object?[] { i }).ToArray();
public ReadOnlyTheoryData(IEnumerable<object> data)
=> _data = data.Select(i => new object?[] { i }).ToArray();
public ReadOnlyTheoryData(params object?[] data)
=> _data = data.Select(i => new object?[] { i }).ToArray();
IEnumerator<object?[]> IEnumerable<object?[]>.GetEnumerator() => _data.GetEnumerator();
IEnumerator IEnumerable.GetEnumerator() => _data.GetEnumerator();
}
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