lib/assit/assertions.rb
def assit_real_string(object, message = "Not a non-empty string.")
      unless(object && object.kind_of?(String) && object.strip != "")
        assit(false, message)
      end
    end
def assit_real_string(object, message = "Not a non-empty string.")
      unless(object && object.kind_of?(String) && object.strip != "")
        assit(false, message)
      end
    end
Asserts that the given element is a string that is not nil and not an
 empty string, or a string only containing whitspaces