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: step_test.rb
    path of file: ./repos/byebug/test/commands
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require "test_helper"

module Byebug
  #
  # Tests basic stepping behaviour.
  #
  class BasicSteppingTest < TestCase
    def program
      strip_line_numbers <<-RUBY
         1:  module Byebug
         2:    #
         3:    # Toy class to test stepping.
         4:    #
         5:    class #{example_class}
         6:      def 
    
    def program
      strip_line_numbers <<-RUBY
         1:  module Byebug
         2:    #
         3:    # Toy class to test the combination of "up" and "next" commands.
         4:    #
         5:    class #{example_class}
         6:      def a
         7:        byebug
         8:        r = b(c)
         9:        r + 1
        10:      end
        11:
        12:      def b(p)
        13:        r = 2
        14:        p + r
        15:      end
        16:
        17:      def c
        18:        s = 3
        19:        s + 2
        20:      end
        21:    end
        22:
        23:    #{example_class}.new.a
        24:  end
      RUBY
    end