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osu-lazer/osu.Game.Tests/Beatmaps/IO/LineBufferedReaderTest.cs

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2019-09-10 05:41:51 +08:00
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
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using System.IO;
using System.Text;
using NUnit.Framework;
using osu.Game.IO;
namespace osu.Game.Tests.Beatmaps.IO
{
[TestFixture]
public class LineBufferedReaderTest
{
[Test]
public void TestReadLineByLine()
{
const string contents = "line 1\rline 2\nline 3";
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using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(contents)))
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.AreEqual("line 1", bufferedReader.ReadLine());
Assert.AreEqual("line 2", bufferedReader.ReadLine());
Assert.AreEqual("line 3", bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.ReadLine());
}
}
[Test]
public void TestPeekLineOnce()
{
const string contents = "line 1\r\npeek this\nline 3";
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using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(contents)))
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.AreEqual("line 1", bufferedReader.ReadLine());
Assert.AreEqual("peek this", bufferedReader.PeekLine());
Assert.AreEqual("peek this", bufferedReader.ReadLine());
Assert.AreEqual("line 3", bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.ReadLine());
}
}
[Test]
public void TestPeekLineMultipleTimes()
{
const string contents = "peek this once\nline 2\rpeek this a lot";
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using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(contents)))
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.AreEqual("peek this once", bufferedReader.PeekLine());
Assert.AreEqual("peek this once", bufferedReader.ReadLine());
Assert.AreEqual("line 2", bufferedReader.ReadLine());
Assert.AreEqual("peek this a lot", bufferedReader.PeekLine());
Assert.AreEqual("peek this a lot", bufferedReader.PeekLine());
Assert.AreEqual("peek this a lot", bufferedReader.PeekLine());
Assert.AreEqual("peek this a lot", bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.ReadLine());
}
}
[Test]
public void TestPeekLineAtEndOfStream()
{
const string contents = "first line\r\nsecond line";
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using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(contents)))
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.AreEqual("first line", bufferedReader.ReadLine());
Assert.AreEqual("second line", bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.PeekLine());
Assert.IsNull(bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.PeekLine());
}
}
[Test]
public void TestPeekReadLineOnEmptyStream()
{
using (var stream = new MemoryStream())
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.IsNull(bufferedReader.PeekLine());
Assert.IsNull(bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.ReadLine());
Assert.IsNull(bufferedReader.PeekLine());
}
}
[Test]
public void TestReadToEndNoPeeks()
{
const string contents = "first line\r\nsecond line";
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using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(contents)))
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.AreEqual(contents, bufferedReader.ReadToEnd());
}
}
[Test]
public void TestReadToEndAfterReadsAndPeeks()
{
const string contents = "this line is gone\rthis one shouldn't be\r\nthese ones\ndefinitely not";
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using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(contents)))
using (var bufferedReader = new LineBufferedReader(stream))
{
Assert.AreEqual("this line is gone", bufferedReader.ReadLine());
Assert.AreEqual("this one shouldn't be", bufferedReader.PeekLine());
var endingLines = bufferedReader.ReadToEnd().Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
Assert.AreEqual(3, endingLines.Length);
Assert.AreEqual("this one shouldn't be", endingLines[0]);
Assert.AreEqual("these ones", endingLines[1]);
Assert.AreEqual("definitely not", endingLines[2]);
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}
}
}
}