public void TestPeekableStreamRead()
{
var inputStr = "← ↔ →";
var buffer = inputStr.ToUtf8();
for (int i = 1; i <= buffer.Length; i++)
{
using (var mem = new MemoryStream(buffer))
using (var slow = new SlowStream(mem, i))
using (var peekable = new PeekableStream(slow))
{
using (var peek = peekable.GetPeekStream())
{
var buf = peek.Read(11);
Assert.AreEqual(inputStr, buf.FromUtf8());
Assert.AreEqual(0, peek.Read(buf, 0, 1));
}
var buf2 = peekable.Read(11);
Assert.AreEqual(inputStr, buf2.FromUtf8());
Assert.AreEqual(0, peekable.Read(buf2, 0, 1));
using (var peek = peekable.GetPeekStream())
Assert.AreEqual(0, peek.Read(buf2, 0, 1));
}
}
}
public void TestEmptyPeekableStreamRead()
{
using (var mem = new MemoryStream(new byte[0]))
using (var peekable = new PeekableStream(mem))
{
using (var peek = peekable.GetPeekStream())
Assert.AreEqual(0, peek.Read(new byte[1], 0, 1));
Assert.AreEqual(0, peekable.Read(new byte[1], 0, 1));
}
}
public void TestEmptyPeekableStreamRead()
{
using (var mem = new MemoryStream(new byte[0]))
using (var peekable = new PeekableStream(mem))
{
using (var peek = peekable.GetPeekStream())
Assert.AreEqual(0, peek.Read(new byte[1], 0, 1));
Assert.AreEqual(0, peekable.Read(new byte[1], 0, 1));
}
}
public void TestControlCodedStream()
{
byte[] buffer;
using (var memoryStream = new MemoryStream())
using (var peekable = new PeekableStream(memoryStream))
using (var ccs = new ControlCodedStream(peekable))
using (var binary = new BinaryStream(ccs))
{
binary.WriteString("← ↔ →");
ccs.WriteControlCode(47);
binary.WriteChar((char)255);
ccs.WriteControlCode(48);
binary.WriteVarInt(0x1FF);
ccs.WriteControlCode(49);
binary.WriteFloat(float.NaN);
binary.WriteFloat(float.PositiveInfinity);
binary.WriteFloat(float.NegativeInfinity);
ccs.WriteControlCode(50);
Assert.Throws <ArgumentOutOfRangeException>(() => ccs.WriteControlCode(255));
binary.Close();
ccs.Close();
peekable.Close();
memoryStream.Close();
buffer = memoryStream.ToArray();
}
for (int i = 1; i < buffer.Length; i++)
{
using (var memoryStream = new MemoryStream(buffer))
using (var slowStream = new SlowStream(memoryStream, i))
using (var peekable = new PeekableStream(slowStream))
using (var ccs = new ControlCodedStream(peekable))
using (var binary = new BinaryStream(ccs))
{
Assert.AreEqual("← ↔ →", binary.ReadString());
Assert.Throws <InvalidOperationException>(() => ccs.Read(new byte[1], 0, 1));
Assert.AreEqual(47, ccs.ReadControlCode());
Assert.AreEqual((char)255, binary.ReadChar());
Assert.AreEqual(48, ccs.ReadControlCode());
Assert.AreEqual(0x1FF, binary.ReadVarInt());
Assert.AreEqual(49, ccs.ReadControlCode());
Assert.IsNaN(binary.ReadFloat());
Assert.AreEqual(-1, ccs.ReadControlCode());
Assert.AreEqual(float.PositiveInfinity, binary.ReadFloat());
Assert.AreEqual(float.NegativeInfinity, binary.ReadFloat());
Assert.AreEqual(50, ccs.ReadControlCode());
Assert.AreEqual(-1, ccs.ReadControlCode());
Assert.AreEqual(0, ccs.Read(new byte[1], 0, 1));
}
}
}
public void TestControlCodedStream()
{
byte[] buffer;
using (var memoryStream = new MemoryStream())
using (var peekable = new PeekableStream(memoryStream))
using (var ccs = new ControlCodedStream(peekable))
using (var binary = new BinaryStream(ccs))
{
binary.WriteString("← ↔ →");
ccs.WriteControlCode(47);
binary.WriteChar((char) 255);
ccs.WriteControlCode(48);
binary.WriteVarInt(0x1FF);
ccs.WriteControlCode(49);
binary.WriteFloat(float.NaN);
binary.WriteFloat(float.PositiveInfinity);
binary.WriteFloat(float.NegativeInfinity);
ccs.WriteControlCode(50);
Assert.Throws<ArgumentOutOfRangeException>(() => ccs.WriteControlCode(255));
binary.Close();
ccs.Close();
peekable.Close();
memoryStream.Close();
buffer = memoryStream.ToArray();
}
for (int i = 1; i < buffer.Length; i++)
{
using (var memoryStream = new MemoryStream(buffer))
using (var slowStream = new SlowStream(memoryStream, i))
using (var peekable = new PeekableStream(slowStream))
using (var ccs = new ControlCodedStream(peekable))
using (var binary = new BinaryStream(ccs))
{
Assert.AreEqual("← ↔ →", binary.ReadString());
Assert.Throws<InvalidOperationException>(() => ccs.Read(new byte[1], 0, 1));
Assert.AreEqual(47, ccs.ReadControlCode());
Assert.AreEqual((char) 255, binary.ReadChar());
Assert.AreEqual(48, ccs.ReadControlCode());
Assert.AreEqual(0x1FF, binary.ReadVarInt());
Assert.AreEqual(49, ccs.ReadControlCode());
Assert.IsNaN(binary.ReadFloat());
Assert.AreEqual(-1, ccs.ReadControlCode());
Assert.AreEqual(float.PositiveInfinity, binary.ReadFloat());
Assert.AreEqual(float.NegativeInfinity, binary.ReadFloat());
Assert.AreEqual(50, ccs.ReadControlCode());
Assert.AreEqual(-1, ccs.ReadControlCode());
Assert.AreEqual(0, ccs.Read(new byte[1], 0, 1));
}
}
}
/// <summary>Disposes of this stream and unregisters it from its parent.</summary>
protected override void Dispose(bool disposing)
{
if (disposing && _parent != null)
{
if (_parent._peeks != null)
{
_parent._peeks.Remove(this);
}
_parent = null;
_buffer = null;
}
base.Dispose(disposing);
}
public void TestSingleBytePeekableStreamRead()
{
using (var mem = new MemoryStream(new byte[] { 47 }))
using (var peekable = new PeekableStream(mem))
{
var buf = new byte[1];
using (var peek = peekable.GetPeekStream())
{
Assert.AreEqual(1, peek.Read(buf, 0, 1));
Assert.AreEqual(buf[0], 47);
Assert.AreEqual(0, peek.Read(buf, 0, 1));
}
Assert.AreEqual(1, peekable.Read(buf, 0, 1));
Assert.AreEqual(buf[0], 47);
Assert.AreEqual(0, peekable.Read(buf, 0, 1));
using (var peek = peekable.GetPeekStream())
Assert.AreEqual(0, peek.Read(buf, 0, 1));
}
}
public void TestSingleBytePeekableStreamRead()
{
using (var mem = new MemoryStream(new byte[] { 47 }))
using (var peekable = new PeekableStream(mem))
{
var buf = new byte[1];
using (var peek = peekable.GetPeekStream())
{
Assert.AreEqual(1, peek.Read(buf, 0, 1));
Assert.AreEqual(buf[0], 47);
Assert.AreEqual(0, peek.Read(buf, 0, 1));
}
Assert.AreEqual(1, peekable.Read(buf, 0, 1));
Assert.AreEqual(buf[0], 47);
Assert.AreEqual(0, peekable.Read(buf, 0, 1));
using (var peek = peekable.GetPeekStream())
Assert.AreEqual(0, peek.Read(buf, 0, 1));
}
}
public void TestPeekableStreamRead()
{
var inputStr = "← ↔ →";
var buffer = inputStr.ToUtf8();
for (int i = 1; i <= buffer.Length; i++)
{
using (var mem = new MemoryStream(buffer))
using (var slow = new SlowStream(mem, i))
using (var peekable = new PeekableStream(slow))
{
using (var peek = peekable.GetPeekStream())
{
var buf = peek.Read(11);
Assert.AreEqual(inputStr, buf.FromUtf8());
Assert.AreEqual(0, peek.Read(buf, 0, 1));
}
var buf2 = peekable.Read(11);
Assert.AreEqual(inputStr, buf2.FromUtf8());
Assert.AreEqual(0, peekable.Read(buf2, 0, 1));
using (var peek = peekable.GetPeekStream())
Assert.AreEqual(0, peek.Read(buf2, 0, 1));
}
}
}
/// <summary>Constructor.</summary>
/// <param name="underlyingStream">The underlying stream on which all operations are to be performed.</param>
public ControlCodedStream(PeekableStream underlyingStream)
{
_stream = underlyingStream;
}
/// <summary>Constructor.</summary>
/// <param name="underlyingStream">The underlying stream on which all operations are to be performed.</param>
public ControlCodedStream(PeekableStream underlyingStream)
{
_stream = underlyingStream;
}
/// <summary>Disposes of this stream and unregisters it from its parent.</summary>
protected override void Dispose(bool disposing)
{
if (disposing && _parent != null)
{
if (_parent._peeks != null)
_parent._peeks.Remove(this);
_parent = null;
_buffer = null;
}
base.Dispose(disposing);
}
internal PeekStream(PeekableStream parent)
{
_parent = parent;
IsValid = true;
}
internal PeekStream(PeekableStream parent)
{
_parent = parent;
IsValid = true;
}
