fails:IO.binread reads the contents of a file fails:IO.binread reads the contents of a file up to a certain size when specified fails:IO.binread reads the contents of a file from an offset of a specific size when specified fails:IO.binread returns a String in ASCII-8BIT encoding fails:IO.binread returns a String in ASCII-8BIT encoding regardless of Encoding.default_internal fails:IO.binread raises an ArgumentError when not passed a valid length fails:IO.binread raises an Errno::EINVAL when not passed a valid offset