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Code Issues 32 Releases Wiki Activity

Fixed #22833: Autodetector not doing through mapping correctly

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Andrew Godwin
2014-06-15 12:06:48 -07:00
parent 24afb1d7a7
commit f717ef083a
2 changed files with 20 additions and 1 deletions
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15
tests/migrations/test_autodetector.py
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@@ -750,6 +750,21 @@ class AutodetectorTests(TestCase):
self.assertEqual(action.__class__.__name__, "DeleteModel")
self.assertEqual(action.name, "Attribution")
def test_many_to_many_removed_before_through_model_2(self):
"""
Removing a model that contains a ManyToManyField and the
"through" model in the same change must remove
the field before the model to maintain consistency.
"""
before = self.make_project_state([self.book_with_multiple_authors_through_attribution, self.author_name, self.attribution])
after = self.make_project_state([self.author_name]) # removes both the through model and ManyToMany
autodetector = MigrationAutodetector(before, after)
changes = autodetector._detect_changes()
# Right number of migrations?
self.assertNumberMigrations(changes, 'otherapp', 1)
# Right number of actions?
self.assertOperationTypes(changes, 'otherapp', 0, ["RemoveField", "RemoveField", "RemoveField", "DeleteModel", "DeleteModel"])
def test_m2m_w_through_multistep_remove(self):
"""
A model with a m2m field that specifies a "through" model cannot be removed in the same