class Shoulda::Matchers::Doublespeak::Double

def replace_method_with_double
  double = self
  implementation = @implementation
  _method_name = method_name
  if klass.instance_methods(false).include?(method_name)
    klass.__send__(:remove_method, method_name)
  end
  klass.__send__(:define_method, method_name) do |*args, &block|
    call = MethodCall.new(
      double: double,
      object: self,
      method_name: _method_name,
      args: args,
      block: block,
      caller: caller
    )
    implementation.call(call)
  end
end