public void TestExpandPos()
{
IoBuffer buffer = IoBuffer.Allocate(10);
buffer.Put(Encoding.Default.GetBytes("012345"));
buffer.Flip();
Assert.AreEqual(6, buffer.Remaining);
// See if we can expand with a lower number of remaining bytes. We should not.
IoBuffer newBuffer = buffer.Expand(3, 2);
Assert.AreEqual(6, newBuffer.Limit);
Assert.AreEqual(10, newBuffer.Capacity);
Assert.AreEqual(0, newBuffer.Position);
// Now, let's expand the buffer above the number of current bytes but below the limit
buffer = IoBuffer.Allocate(10);
buffer.Put(Encoding.Default.GetBytes("012345"));
buffer.Flip();
newBuffer = buffer.Expand(3, 5);
Assert.AreEqual(8, newBuffer.Limit);
Assert.AreEqual(10, newBuffer.Capacity);
Assert.AreEqual(0, newBuffer.Position);
// Last, expand the buffer above the limit
buffer = IoBuffer.Allocate(10);
buffer.Put(Encoding.Default.GetBytes("012345"));
buffer.Flip();
newBuffer = buffer.Expand(3, 9);
Assert.AreEqual(12, newBuffer.Limit);
Assert.AreEqual(12, newBuffer.Capacity);
Assert.AreEqual(0, newBuffer.Position);
// Now, move forward in the buffer
buffer = IoBuffer.Allocate(10);
buffer.Put(Encoding.Default.GetBytes("012345"));
buffer.Flip();
buffer.Position = 4;
// See if we can expand with a lower number of remaining bytes. We should not be.
newBuffer = buffer.Expand(5, 1);
Assert.AreEqual(6, newBuffer.Limit);
Assert.AreEqual(10, newBuffer.Capacity);
Assert.AreEqual(4, newBuffer.Position);
// Expand above the current limit
buffer = IoBuffer.Allocate(10);
buffer.Put(Encoding.Default.GetBytes("012345"));
buffer.Flip();
buffer.Position = 4;
newBuffer = buffer.Expand(5, 2);
Assert.AreEqual(7, newBuffer.Limit);
Assert.AreEqual(10, newBuffer.Capacity);
Assert.AreEqual(4, newBuffer.Position);
// Expand above the current capacity
buffer = IoBuffer.Allocate(10);
buffer.Put(Encoding.Default.GetBytes("012345"));
buffer.Flip();
buffer.Position = 4;
newBuffer = buffer.Expand(5, 6);
Assert.AreEqual(11, newBuffer.Limit);
Assert.AreEqual(11, newBuffer.Capacity);
Assert.AreEqual(4, newBuffer.Position);
}
/// <inheritdoc/>
public override IoBuffer Expand(Int32 expectedRemaining)
{
_buf.Expand(expectedRemaining);
return(this);
}