Added rollback emulation to spatialite backend; refs #22487.

django/contrib/gis/db/backends/spatialite/creation.py

@@ -7,7 +7,7 @@ from django.db.backends.sqlite3.creation import DatabaseCreation
 
 class SpatiaLiteCreation(DatabaseCreation):
 
-    def create_test_db(self, verbosity=1, autoclobber=False, keepdb=False):
+    def create_test_db(self, verbosity=1, autoclobber=False, serialize=True, keepdb=False):
         """
         Creates a test database, prompting the user for confirmation if the
         database already exists. Returns the name of the test database created.
@@ -47,6 +47,13 @@ class SpatiaLiteCreation(DatabaseCreation):
             database=self.connection.alias,
             load_initial_data=False)
 
+        # 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 who are using
+        # a TransactionTestCase still get a clean database on every test run.
+        if serialize:
+            self.connection._test_serialized_contents = self.serialize_db_to_string()
+
         # We need to then do a flush to ensure that any data installed by
         # custom SQL has been removed. The only test data should come from
         # test fixtures, or autogenerated from post_migrate triggers.