public void EmptyBufferThrowsOnSeek()
{
using (StreamBuffer buffer = new StreamBuffer(0))
{
Action action = () => buffer.Seek(1, SeekOrigin.Begin);
action.ShouldThrow<IOException>();
}
}
public void SeekSucceeds()
{
using (StreamBuffer buffer = new StreamBuffer(0))
{
buffer.Length.Should().Be(0);
buffer.Write(new byte[] { 0xA, 0xB, 0xC }, 0, 3);
buffer.Length.Should().Be(3);
buffer.Seek(0, SeekOrigin.Begin);
buffer.ReadByte().Should().Be(0xA);
buffer.Seek(-1, SeekOrigin.Current);
buffer.ReadByte().Should().Be(0xA);
buffer.Seek(1, SeekOrigin.Current);
buffer.ReadByte().Should().Be(0xC);
buffer.Seek(1, SeekOrigin.Begin);
buffer.ReadByte().Should().Be(0xB);
buffer.Seek(-2, SeekOrigin.End);
buffer.ReadByte().Should().Be(0xB);
}
}
public void EmptyBufferCanSeekNowhere()
{
using (StreamBuffer buffer = new StreamBuffer(0))
{
buffer.Seek(0, SeekOrigin.Begin).Should().Be(0);
}
}
