public void ReplacingData()
{
var rng = new Random();
var one = new byte[16];
var two = new byte[32];
rng.NextBytes(one);
rng.NextBytes(two);
var readable = one.Length - 2;
var s = new ReusableStream(one, 0, readable);
Assert.AreEqual(readable, s.Length);
Assert.AreEqual(readable, s.UnreadByteCount);
Assert.AreEqual(0, s.Offset);
Assert.AreEqual(0, s.Position);
var readCount = 0;
while (s.UnreadByteCount > 0)
{
Assert.AreEqual(one[readCount], s.ReadUInt8());
readCount++;
}
Assert.AreEqual(readable, readCount);
readable = two.Length - 2;
s.ReplaceData(two, 2, readable);
Assert.AreEqual(readable, s.Length);
Assert.AreEqual(readable, s.UnreadByteCount);
Assert.AreEqual(2, s.Offset);
Assert.AreEqual(0, s.Position);
readCount = 0;
while (s.UnreadByteCount > 0)
{
Assert.AreEqual(two[2 + readCount], s.ReadUInt8());
readCount++;
}
Assert.AreEqual(readable, readCount);
}
public void Seek()
{
var data = new byte[16];
var rng = new Random();
rng.NextBytes(data);
const int offset = 2;
var s = new ReusableStream(data, offset, data.Length - offset);
Assert.AreEqual(data[offset], s.ReadUInt8());
s.Seek(0, SeekOrigin.Begin);
Assert.AreEqual(data[offset], s.ReadUInt8());
s.Seek(2, SeekOrigin.Current);
Assert.AreEqual(data[offset + 3], s.ReadUInt8());
s.Seek(-1, SeekOrigin.Current);
Assert.AreEqual(data[offset + 3], s.ReadUInt8());
s.Seek(-1, SeekOrigin.End);
Assert.AreEqual(data[data.Length - 1], s.ReadUInt8());
}
public unsafe void ReadPastEnd()
{
var s = new ReusableStream(16);
s.Write((ulong)3);
var buffer = new byte[16];
fixed(byte *p = buffer)
{
var bufferPtr = p;
Assert.AreEqual(-1, s.ReadByte());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadBoolean());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadInt8());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadUInt8());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadInt16());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadUInt16());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadInt32());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadUInt32());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadInt64());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadUInt64());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadSingle());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadDouble());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadDateTime());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadGuid());
Assert.Throws <IndexOutOfRangeException>(() => s.ReadString(true));
Assert.AreEqual(0, s.Read(buffer, 0, 1));
Assert.AreEqual(0, s.Read(bufferPtr, 1));
s.ResetForReading();
Assert.AreEqual(8, s.Read(buffer, 0, 9));
s.ResetForReading();
Assert.AreEqual(8, s.Read(bufferPtr, 9));
}
}
public void ReadWritePrimitives()
{
var s = new ReusableStream(100);
var rng = new Random();
var b = (byte)rng.Next(255);
var sb = (sbyte)rng.Next(255);
var sh = (short)rng.Next(short.MinValue, short.MaxValue);
var ush = (ushort)rng.Next(ushort.MaxValue);
var i = rng.Next(int.MinValue, int.MaxValue);
var ui = (uint)rng.Next(int.MinValue, int.MaxValue);
var l = (long)RandomULong(rng);
var ul = RandomULong(rng);
var f = (float)rng.NextDouble();
var d = rng.NextDouble();
var c = (char)rng.Next(char.MinValue, char.MaxValue);
var t = DateTime.UtcNow;
var g = Guid.NewGuid();
var expectedLength = 0;
s.Write(b);
expectedLength += 1;
Assert.AreEqual(expectedLength, s.Length);
s.Write(sb);
expectedLength += 1;
Assert.AreEqual(expectedLength, s.Length);
s.Write(sh);
expectedLength += 2;
Assert.AreEqual(expectedLength, s.Length);
s.Write(ush);
expectedLength += 2;
Assert.AreEqual(expectedLength, s.Length);
s.Write(i);
expectedLength += 4;
Assert.AreEqual(expectedLength, s.Length);
s.Write(ui);
expectedLength += 4;
Assert.AreEqual(expectedLength, s.Length);
s.Write(l);
expectedLength += 8;
Assert.AreEqual(expectedLength, s.Length);
s.Write(ul);
expectedLength += 8;
Assert.AreEqual(expectedLength, s.Length);
s.Write(f);
expectedLength += 4;
Assert.AreEqual(expectedLength, s.Length);
s.Write(d);
expectedLength += 8;
Assert.AreEqual(expectedLength, s.Length);
s.Write(c);
expectedLength += 2;
Assert.AreEqual(expectedLength, s.Length);
s.Write(false);
expectedLength += 1;
Assert.AreEqual(expectedLength, s.Length);
s.Write(true);
expectedLength += 1;
Assert.AreEqual(expectedLength, s.Length);
s.Write(t);
expectedLength += 8;
Assert.AreEqual(expectedLength, s.Length);
s.Write(g);
expectedLength += 16;
Assert.AreEqual(expectedLength, s.Length);
s.ResetForReading();
Assert.AreEqual(b, s.ReadUInt8());
Assert.AreEqual(sb, s.ReadInt8());
Assert.AreEqual(sh, s.ReadInt16());
Assert.AreEqual(ush, s.ReadUInt16());
Assert.AreEqual(i, s.ReadInt32());
Assert.AreEqual(ui, s.ReadUInt32());
Assert.AreEqual(l, s.ReadInt64());
Assert.AreEqual(ul, s.ReadUInt64());
Assert.AreEqual(f, s.ReadSingle());
Assert.AreEqual(d, s.ReadDouble());
Assert.AreEqual(c, s.ReadChar());
Assert.AreEqual(false, s.ReadBoolean());
Assert.AreEqual(true, s.ReadBoolean());
Assert.AreEqual(t, s.ReadDateTime());
Assert.AreEqual(g, s.ReadGuid());
// verify that we read to the end
Assert.AreEqual(s.Length, s.Position);
s.ResetForReading();
Assert.AreEqual((int)b, s.ReadByte());
}
