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Diffstat (limited to 'tests')
| -rw-r--r-- | tests/migrations/test_state.py | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tests/migrations/test_state.py b/tests/migrations/test_state.py index d165221aa6..c8814a4296 100644 --- a/tests/migrations/test_state.py +++ b/tests/migrations/test_state.py @@ -210,6 +210,37 @@ class StateTests(SimpleTestCase): author_state = project_state.models['migrations', 'author'] self.assertEqual(author_state.managers, []) + def test_no_duplicate_managers(self): + """ + When a manager is added with `use_in_migrations = True` and a parent + model had a manager with the same name and `use_in_migrations = True`, + the parent's manager shouldn't appear in the model state (#26881). + """ + new_apps = Apps(['migrations']) + + class PersonManager(models.Manager): + use_in_migrations = True + + class Person(models.Model): + objects = PersonManager() + + class Meta: + abstract = True + + class BossManager(PersonManager): + use_in_migrations = True + + class Boss(Person): + objects = BossManager() + + class Meta: + app_label = 'migrations' + apps = new_apps + + project_state = ProjectState.from_apps(new_apps) + boss_state = project_state.models['migrations', 'boss'] + self.assertEqual(boss_state.managers, [('objects', Boss.objects)]) + def test_custom_default_manager(self): new_apps = Apps(['migrations']) |