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_mode.rb
    path of file: ./repos/textbringer/test/textbringer
    
    the code of the file until where you have to start completion: require_relative "../test_helper"

class TestMode < Textbringer::TestCase
  class FooMode < Mode
    define_generic_command :foo
  end

  class BarM
    
  def test_generic_command
    foo_mode
    assert_raise(EditorError) do
      foo_command
    end

    bar_mode
    assert_equal(:ok, foo_command)

    baz_mode
    assert_raise(NoMethodError) do
      foo_command
    end
  end