public void Should_ReadBytes()
{
var bytes = new byte[] { 0xFF, 0x01, 0xCC, 0xAA };
var stream = new BitStream(bytes);
var reader = new BitStreamReader(stream);
var readBytes = new byte[4];
reader.Read(readBytes, 0, readBytes.Length);
CollectionAssert.AreEqual(bytes, readBytes);
}
public void ShouldNot_ReadBitsAndBytes()
{
var bytes = new byte[] { 0xFF, 0x01, 0xCC, 0xAA };
var stream = new BitStream(bytes);
stream.AllowUnalignedOperations = false;
var reader = new BitStreamReader(stream);
var bit1 = reader.ReadBit();
var bit2 = reader.ReadBit();
var readBytes = new byte[4];
Assert.Throws <StreamUnalignedException>(() => reader.Read(readBytes, 0, readBytes.Length));
}
public void Should_ReadBitsAndBytes()
{
var bytes = new byte[] { 0xFF, 0x01, 0xCC, 0xAA };
var stream = new BitStream(bytes);
stream.AllowUnalignedOperations = true;
var reader = new BitStreamReader(stream);
reader.ReadBit();
reader.ReadBit();
var readBytes = new byte[4];
reader.Read(readBytes, 0, readBytes.Length);
// all bits will be shifted by 2
CollectionAssert.AreEqual(new byte[] { 127, 0, 179, 234 }, readBytes);
}
public void CompletelyRead()
{
var data = new byte[] { 0x3c, 0x4b, 0x1a, 0x54, 0x22, 0x10, 0xaf, 0x89, 0x97, 0x65 };
var stream = new MemoryStream(data);
var reader = new BitStreamReader(stream);
Assert.AreEqual(true, reader.CanRead);
Assert.AreEqual(true, reader.CanSeek);
Assert.AreEqual(false, reader.CanWrite);
Assert.AreEqual(80, reader.BitLength);
Assert.AreEqual(0, reader.BitPosition);
Assert.AreEqual(10, reader.Length);
Assert.AreEqual(0, reader.Position);
Assert.AreEqual(false, reader.ReadBoolean());
Assert.AreEqual(false, reader.ReadBoolean());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(false, reader.ReadBoolean());
Assert.AreEqual(false, reader.ReadBoolean());
Assert.AreEqual(0x4b, reader.ReadByte());
var expected = new byte[8];
Array.Copy(data, 2, expected, 0, 8);
var result = new byte[8];
int toRead = 8;
while (toRead > 0)
{
int read = reader.Read(result, 8 - toRead, toRead);
toRead -= read;
}
CollectionAssert.AreEqual(expected, result);
Assert.AreEqual(80, reader.BitLength);
Assert.AreEqual(80, reader.BitPosition);
Assert.AreEqual(10, reader.Length);
Assert.AreEqual(10, reader.Position);
}
public void SetPosition()
{
var data = new byte[] { 0x3c, 0x4b, 0x1a, 0x54, 0x22, 0x10, 0xaf, 0x89, 0x97, 0x65 };
var stream = new MemoryStream(data);
var reader = new BitStreamReader(stream);
Assert.AreEqual(true, reader.CanRead);
Assert.AreEqual(true, reader.CanSeek);
Assert.AreEqual(false, reader.CanWrite);
Assert.AreEqual(80, reader.BitLength);
Assert.AreEqual(0, reader.BitPosition);
Assert.AreEqual(10, reader.Length);
Assert.AreEqual(0, reader.Position);
reader.Position = 7;
Assert.AreEqual(56, reader.BitPosition);
Assert.AreEqual(7, reader.Position);
Assert.AreEqual(0x89, reader.ReadByte());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(7, reader.Position = 7);
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(0x13, reader.ReadByte());
var buffer = new byte[10];
Assert.AreEqual(1, reader.Read(buffer, 0, 10));
Assert.AreEqual(0x2e, buffer[0]);
Assert.AreEqual(-1, reader.ReadByte());
Assert.AreEqual(73, reader.BitPosition);
Assert.AreEqual(9, reader.Position);
}
public void LeaveOpen_False_ObjectDisposed()
{
var data = new byte[] { 0x3c, 0x4b, 0x1a, 0x54, 0x22, 0x10, 0xaf, 0x89, 0x97, 0x65 };
var stream = new MemoryStream(data);
using (var reader = new BitStreamReader(stream, false))
{
Assert.AreEqual(true, reader.CanRead);
Assert.AreEqual(true, reader.CanSeek);
Assert.AreEqual(false, reader.CanWrite);
Assert.AreEqual(80, reader.BitLength);
Assert.AreEqual(0, reader.BitPosition);
Assert.AreEqual(10, reader.Length);
Assert.AreEqual(0, reader.Position);
reader.Seek(7, SeekOrigin.Begin);
Assert.AreEqual(56, reader.BitPosition);
Assert.AreEqual(7, reader.Position);
Assert.AreEqual(0x89, reader.ReadByte());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(7, reader.Position = 7);
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(0x13, reader.ReadByte());
var buffer = new byte[10];
Assert.AreEqual(1, reader.Read(buffer, 0, 10));
Assert.AreEqual(0x2e, buffer[0]);
Assert.AreEqual(-1, reader.ReadByte());
Assert.AreEqual(73, reader.BitPosition);
Assert.AreEqual(9, reader.Position);
}
stream.Position = 0;
using (var reader = new BitStreamReader(stream, false))
{
Assert.AreEqual(true, reader.CanRead);
Assert.AreEqual(true, reader.CanSeek);
Assert.AreEqual(false, reader.CanWrite);
Assert.AreEqual(80, reader.BitLength);
Assert.AreEqual(0, reader.BitPosition);
Assert.AreEqual(10, reader.Length);
Assert.AreEqual(0, reader.Position);
reader.Seek(7, SeekOrigin.Begin);
Assert.AreEqual(56, reader.BitPosition);
Assert.AreEqual(7, reader.Position);
Assert.AreEqual(0x89, reader.ReadByte());
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(7, reader.Position = 7);
Assert.AreEqual(true, reader.ReadBoolean());
Assert.AreEqual(0x13, reader.ReadByte());
var buffer = new byte[10];
Assert.AreEqual(1, reader.Read(buffer, 0, 10));
Assert.AreEqual(0x2e, buffer[0]);
Assert.AreEqual(-1, reader.ReadByte());
Assert.AreEqual(73, reader.BitPosition);
Assert.AreEqual(9, reader.Position);
}
}
