Catching NoMethodError and returning value

class DataStructure
  2
  3     def method_missing(method_sym, *arguments, &block)
  4     rescue NoMethodError => nME
  5         nME
  6     end
  7
  8 end
  9 class SinglyLinkedList < DataStructure
 10
 11 end

require_relative 'dataStructures'
  2 class Test
  3     @@test_count = 0
  4     @@failures = 0
  5     @@successes = 0
  6
  7     def initialize(actual, expected, class_tested, method_tested)
  8         actual == expected ? @@successes += 1 : @@failures += 1
  9         puts "Test #{@@test_count}: Testing #{class_tested}'s #{method_tested} method."
 10         puts "#{actual == expected ? "Success" : "Failure"}: Expected #{expected}, was #{actual}"
 11         @@test_count += 1
 12     end
 13
 14     def self.final_summary
 15         puts "There were #{@@test_count} tests with #{@@successes} successes
 16         and #{@@failures} failures."
 17     end
 18 end
 19
 20 # Singly Linked List Tests
 21
 22 singlyLinkedList = SinglyLinkedList.new
 23
 24 testInsert = Test.new(singlyLinkedList.insert("A"), "", "SinglyLinkedList", "insert")