make db reset solution compatible with Django==1.11

django_test_migrations/sql.py

@@ -1,15 +1,15 @@
 # -*- coding: utf-8 -*-
 
 from functools import partial
-from typing import Callable, List, Optional, Union
+from typing import Callable, Dict, List, Optional, Union
 
 from django.core.management.color import Style, no_style
 from django.db import DefaultConnectionProxy, connections, transaction
 from django.db.backends.base.base import BaseDatabaseWrapper
 
 _Connection = Union[DefaultConnectionProxy, BaseDatabaseWrapper]
 
-DJANGO_MIGRATIONS_TABLE = 'django_migrations'
+DJANGO_MIGRATIONS_TABLE_NAME = 'django_migrations'
 
 
 def drop_models_tables(
@@ -42,23 +42,39 @@ def flush_django_migrations_table(
     """Flush `django_migrations` table."""
     style = style or no_style()
     connection = connections[database_name]
-    with connection.cursor() as cursor:
-        django_migrations_sequences = connection.introspection.get_sequences(
-            cursor,
-            DJANGO_MIGRATIONS_TABLE,
-        )
+    django_migrations_sequences = get_django_migrations_table_sequences(
+        connection,
+    )
     execute_sql_flush = get_execute_sql_flush_for(connection)
     execute_sql_flush(
         database_name,
         connection.ops.sql_flush(
             style,
-            [DJANGO_MIGRATIONS_TABLE],
+            [DJANGO_MIGRATIONS_TABLE_NAME],
             django_migrations_sequences,
             allow_cascade=False,
         ),
     )
 
 
+def get_django_migrations_table_sequences(
+    connection: _Connection,
+) -> List[Dict[str, str]]:  # pragma: no cover
+    """`django_migrations` table introspected sequences.
+
+    Returns properly inspected sequences when using `Django>1.11`
+    and static sequence for `id` column otherwise.
+
+    """
+    if hasattr(connection.introspection, 'get_sequences'):  # noqa: WPS421
+        with connection.cursor() as cursor:  # noqa: E800
+            return connection.introspection.get_sequences(
+                cursor,
+                DJANGO_MIGRATIONS_TABLE_NAME,
+            )
+    return [{'table': DJANGO_MIGRATIONS_TABLE_NAME, 'column': 'id'}]
+
+
 def get_execute_sql_flush_for(
     connection: _Connection,
 ) -> Callable[[str, List[str]], None]:

setup.cfg

@@ -30,6 +30,7 @@ exclude =
 ignore = D100, D104, D401, W504, X100, RST303, RST304, DAR103, DAR203
 
 per-file-ignores =
+  django_test_migrations/sql.py: E800
   django_test_app/main_app/migrations/*.py: N806, WPS102, WPS114
   django_test_app/django_test_app/settings.py: S105, WPS226, WPS407
   tests/test_*.py: N806, S101, S404, S603, S607, WPS226