fails:File.open opens a file for binary read-write starting at the beginning of the file
fails:File.open raises a SystemCallError if passed an invalid Integer type
fails:File.open with a block does not raise error when file is closed inside the block
fails:File.open with a block does not propagate StandardErrors produced by close
fails:File.open on a FIFO opens it as a normal file
fails:File.open opens a file with a file descriptor d and a block
fails:File.open with a block propagates StandardErrors produced by close
