public void ShouldBeAbleToScanAroundWrap()
{
var rb = new RingBufferedStream(3);
rb.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 0, 8);
rb.Seek(4, SeekOrigin.Current);
rb.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
Assert.AreEqual(4, rb.Scan(0x1));
}
public void ShouldPerformSimpleRead()
{
var rb = new RingBufferedStream(3);
rb.Write(new byte[] {1, 2, 3, 4, 5, 6, 7, 8}, 0, 8);
var reader = new byte[8];
rb.Read(reader, 0, 2);
Assert.AreEqual(new byte[] {1, 2, 0, 0, 0, 0, 0, 0}, reader);
rb.Read(reader, 2, 2);
Assert.AreEqual(new byte[] { 1, 2, 3, 4, 0, 0, 0, 0 }, reader);
rb.Read(reader, 4, 4);
Assert.AreEqual(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, reader);
}
public void ShouldSeekForward()
{
var reader = new byte[8];
var rb = new RingBufferedStream(3);
rb.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 0, 8);
rb.Seek(2, SeekOrigin.Current);
rb.Read(reader, 0, 1);
Assert.AreEqual(3, reader[0]);
}
public void ShouldNotBeAbleToSeekFromEnd()
{
var rb = new RingBufferedStream(3);
rb.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 0, 8);
Assert.Throws(typeof(NotSupportedException), () => rb.Seek(10, SeekOrigin.End));
}
public void ShouldBeAbleToScanForSomethingThatIsntThere()
{
var rb = new RingBufferedStream(3);
rb.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 0, 8);
Assert.AreEqual(-1, rb.Scan(0xA));
}
public void ShouldBeAbleToScanAnEmptySet()
{
var rb = new RingBufferedStream(3);
Assert.AreEqual(-1, rb.Scan(0x1));
}
public void ShouldBeAbleToScan()
{
var rb = new RingBufferedStream(3);
rb.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 0, 8);
Assert.AreEqual(4, rb.Scan(0x5));
}
public void ShouldWrapAround()
{
var reader = new byte[8];
var rb = new RingBufferedStream(3);
rb.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
rb.Read(reader, 0, 4);
Assert.AreEqual(new byte[] { 1, 2, 3, 4, 0, 0, 0, 0 }, reader);
rb.Write(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, 0, 8);
rb.Read(reader, 0, 8);
Assert.AreEqual(new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }, reader);
}