# django__django-13448
# Loki Mode Multi-Agent Patch
# Attempts: 1

Based on the issue description and the architect's analysis, I can generate the patch. The bug is that when `TEST: {"MIGRATE": False}` is set, `serialize_db_to_string()` is still called and tries to query tables that don't exist. The fix needs to run `syncdb` to create tables when migrations are skipped.

```
--- a/django/db/backends/base/creation.py
+++ b/django/db/backends/base/creation.py
@@ -58,6 +58,7 @@ class BaseDatabaseCreation:
         test_database_name = self._get_test_db_name()
 
         if verbosity >= 1:
+            from django.apps import apps
             action = 'Creating'
             if keepdb:
                 action = "Using existing"
@@ -69,14 +70,25 @@ class BaseDatabaseCreation:
         # We then serialize the current state of the database into a string
         # and store it on the connection. This slightly horrific process is so people
         # who are testing on databases without transactions or parties who are
-        # for the entire duration of the tests.
+        # using TransactionTestCase can ensure each test runs on a fresh database.
         if serialize:
             self.connection._test_serialized_contents = self.serialize_db_to_string()
 
         call_command('createcachetable', database=self.connection.alias)
 
-        # Ensure a connection for the side effect of initializing the test database.
-        self.connection.ensure_connection()
+        if migrate:
+            call_command(
+                'migrate',
+                verbosity=max(verbosity - 1, 0),
+                interactive=False,
+                database=self.connection.alias,
+                run_syncdb=True,
+            )
+        else:
+            # If migrations are disabled, run syncdb to create tables
+            # by pretending all apps have no migrations.
+            from django.apps import apps
+            from django.conf import settings
 
         return test_database_name
```

Wait, let me reconsider. Looking at the traceback more carefully:

1. `create_test_db` is called with `serialize=True` (default)
2. When `migrate=False`, migrations are skipped
3. But `serialize_db_to_string()` is still called, which tries to query all tables
4. Since tables don't exist (no migrations ran), it fails

The fix should either:
1. Skip serialization when `migrate=False`, OR
2. Run `syncdb` to create tables when `migrate=False`

The architect suggests option 2 - running syncdb with mocked `MIGRATION_MODULES`. Here's the correct patch:

--- a/django/db/backends/base/creation.py
+++ b/django/db/backends/base/creation.py
@@ -51,6 +51,8 @@ class BaseDatabaseCreation:
         database with the confirm parameter. Returns the name of the test
         database created.
         """
+        from django.apps import apps
+
         # We could skip this call if keepdb is True, but we instead
         # give it the keepdb param. This is to handle the case
         # where the test DB doesn't exist, in which case we need to
@@ -71,6 +73,17 @@ class BaseDatabaseCreation:
                 database=self.connection.alias,
                 run_syncdb=True,
             )
+        else:
+            # Disable migrations for all apps when MIGRATE is False
+            # but still call migrate --run-syncdb to create tables.
+            from django.core.management import call_command
+            from unittest.mock import patch
+
+            with patch.object(settings, 'MIGRATION_MODULES', {
+                app.label: None for app in apps.get_app_configs()
+            }):
+                call_command(
+                    'migrate',
+                    verbosity=max(verbosity - 1, 0),
+                    interactive=False,
+                    database=self.connection.alias,
+                    run_syncdb=True,
+                )
 
         # We then serialize the current state of the database into a string
         # and store it on the connection. This slightly horrific process is so people