Fix test running with new apps stuff/migrate actually running migrations

tests/migrations/test_executor.py

@@ -1,4 +1,5 @@
 from django.test import TransactionTestCase
+from django.test.utils import override_settings
 from django.db import connection
 from django.db.migrations.executor import MigrationExecutor
 
@@ -11,6 +12,9 @@ class ExecutorTests(TransactionTestCase):
     test failures first, as they may be propagating into here.
     """
 
+    available_apps = ["migrations"]
+
+    @override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
     def test_run(self):
         """
         Tests running a simple set of migrations.

tests/migrations/test_loader.py

@@ -1,4 +1,5 @@
-from django.test import TestCase, TransactionTestCase
+from django.test import TestCase
+from django.test.utils import override_settings
 from django.db import connection
 from django.db.migrations.loader import MigrationLoader
 from django.db.migrations.recorder import MigrationRecorder
@@ -30,12 +31,13 @@ class RecorderTests(TestCase):
         )
 
 
-class LoaderTests(TransactionTestCase):
+class LoaderTests(TestCase):
     """
     Tests the disk and database loader, and running through migrations
     in memory.
     """
 
+    @override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
     def test_load(self):
         """
         Makes sure the loader can load the migrations for the test apps,

tests/migrations/test_operations.py

@@ -1,9 +1,9 @@
-from django.test import TransactionTestCase
+from django.test import TestCase
 from django.db import connection, models, migrations
 from django.db.migrations.state import ProjectState
 
 
-class OperationTests(TransactionTestCase):
+class OperationTests(TestCase):
     """
     Tests running the operations and making sure they do what they say they do.
     Each test looks at their state changing, and then their database operation -

tests/migrations/test_writer.py

@@ -1,12 +1,12 @@
 # encoding: utf8
 import datetime
 from django.utils import six
-from django.test import TransactionTestCase
+from django.test import TestCase
 from django.db.migrations.writer import MigrationWriter
 from django.db import models, migrations
 
 
-class WriterTests(TransactionTestCase):
+class WriterTests(TestCase):
     """
     Tests the migration writer (makes migration files from Migration instances)
     """