Add manytomany app to test project and integration tests

tests/fixtures.py

@@ -23,3 +23,4 @@ ADD_NOT_NULL_COLUMN_FOLLOWED_BY_DEFAULT = "app_add_not_null_column_followed_by_d
 ALTER_COLUMN = "app_alter_column"
 ALTER_COLUMN_DROP_NOT_NULL = "app_alter_column_drop_not_null"
 DROP_UNIQUE_TOGETHER = "app_unique_together"
+ADD_MANYTOMANY_FIELD = "app_add_manytomany_field"

tests/functional/test_migration_linter.py

@@ -93,6 +93,10 @@ class BaseBackwardCompatibilityDetection(object):
         app = fixtures.ALTER_COLUMN_DROP_NOT_NULL
         self._test_linter_finds_no_errors(app)
 
+    def test_accept_adding_manytomany_field(self):
+        app = fixtures.ADD_MANYTOMANY_FIELD
+        self._test_linter_finds_no_errors(app)
+
     def test_with_git_ref(self):
         self._test_linter_finds_errors(commit_id="v0.1.4")
 

tests/test_project/settings.py

@@ -40,6 +40,7 @@ INSTALLED_APPS = [
     "django.contrib.messages",
     "django.contrib.staticfiles",
     "django_migration_linter",
+    "tests.test_project.app_add_manytomany_field",
     "tests.test_project.app_add_not_null_column",
     "tests.test_project.app_add_not_null_column_followed_by_default",
     "tests.test_project.app_alter_column",