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Update Readers/Writers for Buffers & Fixes bugs (#283)

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- [X] Renames PacketReader to CircularBufferReader
- [X] Fixes bugs with CircularBufferReader
- [X] Adds CircularBufferWriter
- [X] Adds SpanWriter
- [X] Adds SpanReader

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Kamron Batman 2020-10-24 14:46:59 -07:00 • committed by GitHub
parent 3b7f648c27
commit 6bd4f0d265
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26 changed files with 1302 additions and 351 deletions
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Projects/Server.Tests/Buffers/CircularBufferWriterTests.cs Normal file
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using System;
using System.Buffers;
using System.IO;
using Xunit;
namespace Server.Tests.Buffers
{
public class CircularBufferWriterTests
{
[Theory]
// First only, beginning
[InlineData("Test String", "us-ascii", -1, 1024, 1024, 0)]
[InlineData("Test String", "utf-8", -1, 1024, 1024, 0)]
[InlineData("Test String", "utf-16BE", -1, 1024, 1024, 0)]
[InlineData("Test String", "utf-16", -1, 1024, 1024, 0)]
// Second only
[InlineData("Test String", "us-ascii", -1, 1024, 1024, 1030)]
[InlineData("Test String", "utf-8", -1, 1024, 1024, 1030)]
[InlineData("Test String", "utf-16BE", -1, 1024, 1024, 1030)]
[InlineData("Test String", "utf-16", -1, 1024, 1024, 1030)]
// Split
[InlineData("Test String", "us-ascii", -1, 1024, 1024, 1020)]
[InlineData("Test String", "utf-8", -1, 1024, 1024, 1020)]
[InlineData("Test String", "utf-16BE", -1, 1024, 1024, 1020)]
[InlineData("Test String", "utf-16", -1, 1024, 1024, 1020)]
// First only, beginning, fixed length smaller
[InlineData("Test String", "us-ascii", 8, 1024, 1024, 0)]
[InlineData("Test String", "utf-16BE", 8, 1024, 1024, 0)]
[InlineData("Test String", "utf-16", 8, 1024, 1024, 0)]
// Second only, fixed length smaller
[InlineData("Test String", "us-ascii", 8, 1024, 1024, 1030)]
[InlineData("Test String", "utf-16BE", 8, 1024, 1024, 1030)]
[InlineData("Test String", "utf-16", 8, 1024, 1024, 1030)]
// Split, fixed length smaller
[InlineData("Test String", "us-ascii", 8, 1024, 1024, 1020)]
[InlineData("Test String", "utf-16BE", 8, 1024, 1024, 1020)]
[InlineData("Test String", "utf-16", 8, 1024, 1024, 1020)]
// First only, beginning, fixed length bigger
[InlineData("Test String", "us-ascii", 20, 1024, 1024, 0)]
[InlineData("Test String", "utf-16BE", 20, 1024, 1024, 0)]
[InlineData("Test String", "utf-16", 20, 1024, 1024, 0)]
// Second only, fixed length bigger
[InlineData("Test String", "us-ascii", 20, 1024, 1024, 1030)]
[InlineData("Test String", "utf-16BE", 20, 1024, 1024, 1030)]
[InlineData("Test String", "utf-16", 20, 1024, 1024, 1030)]
// Split, fixed length bigger
[InlineData("Test String", "us-ascii", 20, 1024, 1024, 1020)]
[InlineData("Test String", "utf-16BE", 20, 1024, 1024, 1020)]
[InlineData("Test String", "utf-16", 20, 1024, 1024, 1020)]
public void TestWriteString(
string value,
string encodingStr,
int fixedLength,
int firstSize,
int secondSize,
int offset
)
{
Span<byte> buffer = stackalloc byte[firstSize + secondSize];
buffer.Clear();
var encoding = EncodingHelpers.GetEncoding(encodingStr);
var strLength = fixedLength > -1 ? Math.Min(value.Length, fixedLength) : value.Length;
var chars = value.AsSpan(0, strLength);
var writer = new CircularBufferWriter(buffer.Slice(0, firstSize), buffer.Slice(firstSize));
writer.Seek(offset, SeekOrigin.Begin);
writer.WriteString(chars, encoding);
if (offset > 0)
{
Span<byte> testEmpty = stackalloc byte[offset];
testEmpty.Clear();
AssertThat.Equal(buffer.Slice(0, offset), testEmpty);
}
Span<byte> expectedStr = stackalloc byte[encoding.GetByteCount(chars)];
encoding.GetBytes(chars, expectedStr.Slice(0));
AssertThat.Equal(buffer.Slice(offset, expectedStr.Length), expectedStr);
offset += expectedStr.Length;
if (offset < buffer.Length)
{
Span<byte> testEmpty = stackalloc byte[buffer.Length - offset];
testEmpty.Clear();
AssertThat.Equal(buffer.Slice(offset), testEmpty);
}
}
}
}