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

class Co
    
  def test_creates_new_context
    assert_difference 'Context.count' do
      authenticated_post_xml_to_context_create
      assert_response 201
    end
    context1 = Context.where(:name => @@context_name).first
    assert_not_nil context1, "expected context '#{@@context_name}' to be created"
  end