Use separate module for pytest settings (#13895)

* Use separate module for test settings

* Further refine some pre-existing comments in settings

* Add CACHES to setting snapshot exceptions to accommodate changed load order

awx/api/serializers.py

@@ -2190,7 +2190,7 @@ class BulkHostCreateSerializer(serializers.Serializer):
         host_data = []
         for r in result:
             item = {k: getattr(r, k) for k in return_keys}
-            if not settings.IS_TESTING_MODE:
+            if settings.DATABASES and ('sqlite3' not in settings.DATABASES.get('default', {}).get('ENGINE')):
                 # sqlite acts different with bulk_create -- it doesn't return the id of the objects
                 # to get it, you have to do an additional query, which is not useful for our tests
                 item['url'] = reverse('api:host_detail', kwargs={'pk': r.id})

awx/main/tests/settings_for_test.py

@@ -0,0 +1,28 @@
+# Python
+from unittest import mock
+import uuid
+
+# patch python-ldap
+with mock.patch('__main__.__builtins__.dir', return_value=[]):
+    import ldap  # NOQA
+
+# Load development settings for base variables.
+from awx.settings.development import *  # NOQA
+
+# Some things make decisions based on settings.SETTINGS_MODULE, so this is done for that
+SETTINGS_MODULE = 'awx.settings.development'
+
+# Use SQLite for unit tests instead of PostgreSQL.  If the lines below are
+# commented out, Django will create the test_awx-dev database in PostgreSQL to
+# run unit tests.
+CACHES = {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache', 'LOCATION': 'unique-{}'.format(str(uuid.uuid4()))}}
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': os.path.join(BASE_DIR, 'awx.sqlite3'),  # noqa
+        'TEST': {
+            # Test database cannot be :memory: for inventory tests.
+            'NAME': os.path.join(BASE_DIR, 'awx_test.sqlite3')  # noqa
+        },
+    }
+}

awx/main/tests/unit/test_settings.py

@@ -8,6 +8,7 @@ LOCAL_SETTINGS = (
     'BROADCAST_WEBSOCKET_PROTOCOL',
     'BROADCAST_WEBSOCKET_SECRET',
     'DATABASES',
+    'CACHES',
     'DEBUG',
     'NAMED_URL_GRAPH',
 )

awx/settings/defaults.py

@@ -1,24 +1,16 @@
 # Copyright (c) 2015 Ansible, Inc.
 # All Rights Reserved.
 
+# Python
 import base64
 import os
 import re  # noqa
-import sys
 import tempfile
 import socket
 from datetime import timedelta
 
-
-if "pytest" in sys.modules:
-    IS_TESTING_MODE = True
-    from unittest import mock
-
-    with mock.patch('__main__.__builtins__.dir', return_value=[]):
-        import ldap
-else:
-    IS_TESTING_MODE = False
-    import ldap
+# python-ldap
+import ldap
 
 
 DEBUG = True

awx/settings/development.py

@@ -9,7 +9,6 @@ import socket
 import copy
 import sys
 import traceback
-import uuid
 
 # Centos-7 doesn't include the svg mime type
 # /usr/lib64/python/mimetypes.py
@@ -65,22 +64,6 @@ INSTALL_UUID = '00000000-0000-0000-0000-000000000000'
 BASE_VENV_PATH = "/var/lib/awx/venv/"
 AWX_VENV_PATH = os.path.join(BASE_VENV_PATH, "awx")
 
-# Use SQLite for unit tests instead of PostgreSQL.  If the lines below are
-# commented out, Django will create the test_awx-dev database in PostgreSQL to
-# run unit tests.
-if "pytest" in sys.modules:
-    CACHES = {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache', 'LOCATION': 'unique-{}'.format(str(uuid.uuid4()))}}
-    DATABASES = {
-        'default': {
-            'ENGINE': 'django.db.backends.sqlite3',
-            'NAME': os.path.join(BASE_DIR, 'awx.sqlite3'),  # noqa
-            'TEST': {
-                # Test database cannot be :memory: for inventory tests.
-                'NAME': os.path.join(BASE_DIR, 'awx_test.sqlite3')  # noqa
-            },
-        }
-    }
-
 CLUSTER_HOST_ID = socket.gethostname()
 
 AWX_CALLBACK_PROFILE = True
@@ -132,6 +115,6 @@ except ImportError:
 # because conf.d files will define DATABASES and this should modify that
 from .application_name import set_application_name
 
-set_application_name(DATABASES, CLUSTER_HOST_ID)
+set_application_name(DATABASES, CLUSTER_HOST_ID)  # NOQA
 
 del set_application_name