speed up test execution by using in memory files and md5 password hashes

backend/backend/settings.py

@@ -149,7 +149,29 @@ USE_TZ = True
 STATIC_ROOT = 'staticfiles'
 STATIC_URL = '/static/'
 
+MEDIA_ROOT = 'userfiles'
+MEDIA_URL = '/media/'
+
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+STORAGES = {
+    'default': {
+        'BACKEND': 'django.core.files.storage.FileSystemStorage',
+        'OPTIONS': {
+            'base_url': MEDIA_URL,
+            'location': BASE_DIR / MEDIA_ROOT
+        },
+    },
+    'staticfiles': {
+        'BACKEND': 'django.core.files.storage.FileSystemStorage',
+        'OPTIONS': {
+            'base_url': STATIC_URL,
+            'location': BASE_DIR / STATIC_ROOT
+        },
+    },
+}
+
+TEST_RUNNER = 'backend.test_runner.FastTestRunner'

backend/backend/test_runner.py

@@ -0,0 +1,21 @@
+from django.conf import settings
+from django.test.runner import DiscoverRunner
+
+
+class FastTestRunner(DiscoverRunner):
+    def setup_test_environment(self):
+        super(FastTestRunner, self).setup_test_environment()
+        # Don't write files
+        settings.STORAGES = {
+            'default': {
+                'BACKEND': 'django.core.files.storage.InMemoryStorage',
+                'OPTIONS': {
+                    'base_url': '/media/',
+                    'location': '',
+                },
+            },
+        }
+        # Bonus: Use a faster password hasher. This REALLY helps.
+        settings.PASSWORD_HASHERS = (
+            'django.contrib.auth.hashers.MD5PasswordHasher',
+        )