auth: Remove Realm.AUTHENTICATION_FLAGS class attribute.

With the removal of the authentication_methods bitfield this is now
useless and just duplicates AUTH_BACKEND_NAME_MAP keys.

zerver/models.py

@@ -294,19 +294,6 @@ class Realm(models.Model):  # type: ignore[django-manager-missing] # django-stub
 
     INVITES_STANDARD_REALM_DAILY_MAX = 3000
     MESSAGE_VISIBILITY_LIMITED = 10000
-    AUTHENTICATION_FLAGS = [
-        "Google",
-        "Email",
-        "GitHub",
-        "LDAP",
-        "Dev",
-        "RemoteUser",
-        "AzureAD",
-        "SAML",
-        "GitLab",
-        "Apple",
-        "OpenID Connect",
-    ]
     SUBDOMAIN_FOR_ROOT_DOMAIN = ""
     WILDCARD_MENTION_THRESHOLD = 15
 

zerver/tests/test_gitter_importer.py

@@ -9,8 +9,13 @@ import orjson
 from zerver.data_import.gitter import do_convert_data, get_usermentions
 from zerver.lib.import_realm import do_import_realm
 from zerver.lib.test_classes import ZulipTestCase
-from zerver.models import Message, Realm, UserProfile, get_realm
-from zproject.backends import GitHubAuthBackend, auth_enabled_helper, github_auth_enabled
+from zerver.models import Message, UserProfile, get_realm
+from zproject.backends import (
+    AUTH_BACKEND_NAME_MAP,
+    GitHubAuthBackend,
+    auth_enabled_helper,
+    github_auth_enabled,
+)
 
 
 class GitterImporter(ZulipTestCase):
@@ -131,7 +136,7 @@ class GitterImporter(ZulipTestCase):
             self.assertIsNotNone(message.rendered_content, None)
 
         self.assertTrue(github_auth_enabled(realm))
-        for auth_backend_name in Realm.AUTHENTICATION_FLAGS:
+        for auth_backend_name in AUTH_BACKEND_NAME_MAP:
             if auth_backend_name == GitHubAuthBackend.auth_backend_name:
                 continue
 

zerver/tests/test_urls.py

@@ -12,8 +12,9 @@ from zerver.lib.url_redirects import (
     LANDING_PAGE_REDIRECTS,
     POLICY_DOCUMENTATION_REDIRECTS,
 )
-from zerver.models import Realm, Stream
+from zerver.models import Stream
 from zproject import urls
+from zproject.backends import AUTH_BACKEND_NAME_MAP
 
 
 class PublicURLTest(ZulipTestCase):
@@ -115,7 +116,7 @@ class PublicURLTest(ZulipTestCase):
         Here we simply sanity-check that all the URLs load
         correctly.
         """
-        auth_types = [auth.lower() for auth in Realm.AUTHENTICATION_FLAGS]
+        auth_types = [auth.lower() for auth in AUTH_BACKEND_NAME_MAP]
         for auth in [
             "azuread",
             "email",

zproject/backends.py

@@ -137,7 +137,7 @@ def auth_enabled_helper(backends_to_check: List[str], realm: Optional[Realm]) ->
     if realm is not None:
         enabled_method_dict = realm.authentication_methods_dict()
     else:
-        enabled_method_dict = {method: True for method in Realm.AUTHENTICATION_FLAGS}
+        enabled_method_dict = {method: True for method in AUTH_BACKEND_NAME_MAP}
 
     pad_method_dict(enabled_method_dict)
     for supported_backend in supported_auth_backends():