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// Copyright 2009-2022 Josh Close
// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
// https://github.com/JoshClose/CsvHelper
using CsvHelper.Configuration;
using Xunit;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CsvHelper.Tests.Parsing
{
public class RefillingTextReaderTests
{
[Fact]
public void RefillTextReaderMultipleTimesTest()
{
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var parser = new CsvParser(reader, CultureInfo.InvariantCulture))
{
writer.Write("1,2\r\n");
writer.Flush();
stream.Position = 0;
Assert.True(parser.Read());
Assert.Equal("1", parser[0]);
Assert.Equal("2", parser[1]);
Assert.False(parser.Read());
var position = stream.Position;
writer.Write("3,4\r\n");
writer.Flush();
stream.Position = position;
Assert.True(parser.Read());
Assert.Equal("3", parser[0]);
Assert.Equal("4", parser[1]);
Assert.False(parser.Read());
position = stream.Position;
writer.Write("5,6\r\n");
writer.Flush();
stream.Position = position;
Assert.True(parser.Read());
Assert.Equal("5", parser[0]);
Assert.Equal("6", parser[1]);
Assert.False(parser.Read());
}
}
}
}
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