class_method_macro.cr

struct Int
  macro self_test(name)
    def self.{{name}}
      "me!"
    end
    {% debug() %}
  end
end

Int.self_test(self_method)
Int.self_method

# The macro debugger prints out
#
# def self.self_method
#   "me!"
# end
#
# and then the compiler prints out
# 
# Error in src/class_method_macro.cr:11: undefined method 'self_method' for Int:Class
# 
# Int.self_method
#     ^~~~~~~~~~~