Calling the original instance method after overriding in Ruby

Say, there is a class:

class Base
  def test
    "original result"
  end
end

And a descendant that overrides base class method:

class Descendant < Base
  def test
    "overridden result"
  end
end

How to call Base#test in the Descendant instance context, outside from the Descendant#test? In other words, how woud you access super for some secific instance method outside from the override?

There is a way:

class Descendant < Base
  def test
    "overridden result"
  end

  def original_test
    super_test = Base.instance_method(:test).bind(self)
    super_test.call
  end
end

Descendant#original_test will call the Base#test:

Descendant.new.original_test
# => "original result"

Same approach works for module methods: ImportedModule.instance_method(:method_name).bind(self).call

ruby

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