using System.Collections.Generic;
using System.IO;

namespace DotnetStandardStreamsTests.Testables;
public class ListTextReader : TextReader
{
	private readonly IEnumerator<string> _enumerator;

	public ListTextReader(IEnumerable<string> data) => _enumerator = data.GetEnumerator();

	public override string? ReadLine()
		=> _enumerator.MoveNext()
			? _enumerator.Current
			: null;
}