old_contents: from test.utils.assertions import assert_header_value, assert_json_response
  
  from test.utils.helpers import get_json_from_response, get_identifier_for_created_person
  
  
  # noinspection PyPep8Naming,PyShadowingNames
  class Test_When_No_People_Exist(object):
      def test_status_code(self, get_people):
          assert get_people().status_code == 200
  
      def test_header_content_type(self, get_people):
          assert_header_value('content-type', 'application/json; charset=UTF-8', get_people().headers)
  
      def test_body(self, get_people):
          assert_json_response({'data': [], 'type': 'person_list'}, get_people())
  
  
  # noinspection PyPep8Naming,PyShadowingNames,PyUnusedLocal
  class Test_When_One_Person_Exists(object):
      def test_body_should_contain_one_person(self, create_person, get_people):
          response = create_person('Frank Stella')
          people = get_json_from_response(get_people())['data']
  
          assert len(people) == 1
  
          person = people[0]
          person_id = get_identifier_for_created_person(response)
  
          assert person['name'] == 'Frank Stella'
          assert person['id'] == person_id
  
new_contents: from test.utils.assertions import assert_header_value, assert_json_response
  
  from test.utils.helpers import get_json_from_response, get_identifier_for_created_person
  
  
  # noinspection PyPep8Naming,PyShadowingNames
  class Test_When_No_People_Exist(object):
      def test_status_code(self, get_people):
          assert get_people().status_code == 200
  
      def test_header_content_type(self, get_people):
          assert_header_value('content-type', 'application/json; charset=UTF-8', get_people().headers)
  
      def test_body(self, get_people):
          assert_json_response({'data': [], 'type': 'person_list'}, get_people())
  
  
  # noinspection PyPep8Naming,PyShadowingNames,PyUnusedLocal
  class Test_When_One_Person_Exists(object):
      def test_body_should_contain_one_person(self, create_person, get_people):
          response = create_person('Frank Stella')
          people = get_json_from_response(get_people())['data']
  
          assert len(people) == 1
  
          person = people[0]
          person_id = get_identifier_for_created_person(response)
  
          assert len(person) == 2
          assert person['name'] == 'Frank Stella'
          assert person['id'] == person_id
  
subject: Add assertion for number of fields on person