public void VarInt()
{
var buffer = new BufferReaderWriter(new byte[10], 0, 0, false);
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x00000000);
Assert.Equal(new byte[] { 0x00 }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x00, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x0000007F);
Assert.Equal(new byte[] { 0x7F }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x7F, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x00000080);
Assert.Equal(new byte[] { 0x80, 0x01 }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x80, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x00002000);
Assert.Equal(new byte[] { 0x80, 0x40 }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x2000, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x00003FFF);
Assert.Equal(new byte[] { 0xFF, 0x7F }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x3FFF, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x00004000);
Assert.Equal(new byte[] { 0x80, 0x80, 0x01 }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x4000, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x001FFFFF);
Assert.Equal(new byte[] { 0xFF, 0xFF, 0x7F }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x1FFFFF, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x00200000);
Assert.Equal(new byte[] { 0x80, 0x80, 0x80, 0x01 }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x200000, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x08000000);
Assert.Equal(new byte[] { 0x80, 0x80, 0x80, 0x40 }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0x8000000, buffer.ReadVarInt());
}
{
buffer.Seek(0, SeekOrigin.Begin);
buffer.WriteVarInt(0x0FFFFFFF);
Assert.Equal(new byte[] { 0xFF, 0xFF, 0xFF, 0x7F }, buffer.Copy());
buffer.Seek(0, SeekOrigin.Begin);
Assert.Equal(0xFFFFFFF, buffer.ReadVarInt());
}
}