gistfile1.rb

module ModuleSpecs

  module A
    CONSTANT_A = :a
    #OVERRIDE = :a
    #def ma(); :a; end
    #def self.cma(); :a; end
  end

  module B
    #CONSTANT_B = :b
    #OVERRIDE = :b
    puts 'about to include...'
    include A
    #def mb(); :b; end
    #def self.cmb(); :b; end
  end

  #class C
  #  OVERRIDE = :c
  #  include B
  #end

  #module Z
  #  MODULE_SPEC_TOPLEVEL_CONSTANT = 1
  #end

end


    p ModuleSpecs::A.constants.include?(:CONSTANT_A)
    p ModuleSpecs::B.constants.include?(:CONSTANT_A)
    #p ModuleSpecs::B.constants.include?(:CONSTANT_B)
    #p ModuleSpecs::C.constants.include?(:CONSTANT_A)
    #p ModuleSpecs::C.constants.include?(:CONSTANT_B)