You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: test_ensured.rb
    path of file: ./repos/truffleruby/test/mri/tests/cext-ruby/exception
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
require 'test/unit'

module Bug
  class Bug7802 < RuntimeError
  end

  class Test_ExceptionE < Test::Unit::TestCase
    def test_ensured
      assert_separately([], <<-'end;')
    
    def test_ensured
      assert_separately([], <<-'end;') # do

        require 'c/exception'

        module Bug
          class Bug7802 < RuntimeError
            def try_method
              raise self
            end

            def ensured_method
              [1].detect {|i| true}
            end
          end
        end