Use fixtures in django server tests

tests/test_django.py

@@ -4,29 +4,31 @@
 from unittest import mock
 
 import django
+import pytest
 from django.test import Client
 
 from .util import get_test_file_path
 
 
+@pytest.fixture
 @mock.patch.dict(os.environ, {
     "DJANGO_SETTINGS_MODULE": "django_.settings",
     "PYGEOAPI_CONFIG": get_test_file_path('pygeoapi-test-config.yml'),
     "PYGEOAPI_OPENAPI": get_test_file_path('pygeoapi-test-openapi.yml')
 })
 @mock.patch.object(sys, "path", sys.path + ["./pygeoapi"])
-def test_django_landing_page_loads():
+def django_():
     django.setup()
+    return django
 
+def test_django_landing_page_loads(django_):
     response = Client(SERVER_NAME="localhost").get("/")
 
     assert response.status_code == HTTPStatus.OK
     assert response.json()["title"] == "pygeoapi default instance"
 
 
-def test_django_edr_without_instance_id():
-    django.setup()
-
+def test_django_edr_without_instance_id(django_):
     edr_position_query = ("/collections/icoads-sst/position?coords="
                           "POINT(12.779895 55.783523)&f=json")
     response = Client(SERVER_NAME="localhost").get(edr_position_query)