private static unsafe void ReadWriteTest(IGrowableBuffer <byte> writer)
{
// write a few bytes
writer.Write(255);
writer.Write(0);
Equal(2L, writer.WrittenCount);
var actual = new byte[2];
Equal(2, writer.CopyTo(actual));
Equal(new byte[] { 255, 0 }, actual);
writer.Clear();
var expected = RandomBytes(5000);
writer.Write(expected);
actual = new byte[expected.Length];
writer.CopyTo <ReadOnlySpanConsumer <byte, ArrayCopyOperation> >(new ReadOnlySpanConsumer <byte, ArrayCopyOperation>(&ArrayCopyOperation.Append, new ArrayCopyOperation(actual)));
Equal(expected, actual);
}
