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: done_todos_test.rb
    path of file: ./repos/tracks/test/models/todos
    
    the code of the file until where you have to start completion: require 'test_helper'

module Todos
  class DoneTodosTest < ActiveSupport::TestCase

    def test_completed_period
  
    
    def test_done_today
      todos = users(:admin_user).todos
      assert 0, DoneTodos.done_today(todos, {}).count

      t = users(:admin_user).todos.active.first
      t.complete!

      assert 0, DoneTodos.done_today(todos.reload, {}).count      
    end