fails:Enumerable#max max should return the maximum element
fails:Enumerable#max returns the maximum element (basics cases)
fails:Enumerable#max raises an ArgumentError for incomparable elements
fails:Enumerable#max returns the maximum element (with block
fails:Enumerable#max returns the minimum for enumerables that contain nils
fails:Enumerable#max gathers whole arrays as elements when each yields multiple
