Skip test that cannot be ran in parallel (#1217)

Author: kingbuzzman

tests/test_fixtures.py

@@ -4,6 +4,7 @@
 fixtures are tested in test_database.
 """
 
+import os
 import socket
 from collections.abc import Generator
 from contextlib import contextmanager
@@ -443,6 +444,7 @@ def test_set_non_existent(settings):
 
 
 class TestLiveServer:
+    @pytest.mark.skipif("PYTEST_XDIST_WORKER" in os.environ, reason="xdist in use")
     def test_settings_before(self) -> None:
         from django.conf import settings
 
@@ -458,6 +460,7 @@ def test_url(self, live_server) -> None:
     def test_change_settings(self, live_server, settings) -> None:
         assert live_server.url == force_str(live_server)
 
+    @pytest.mark.skipif("PYTEST_XDIST_WORKER" in os.environ, reason="xdist in use")
     def test_settings_restored(self) -> None:
         """Ensure that settings are restored after test_settings_before."""
         from django.conf import settings