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Fixed #22750, #22248: Model renaming now also alters field FKs

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This commit is contained in:
Andrew Godwin 2014-06-07 18:17:31 -07:00
parent 1e84d261d6
commit 4ce7a6bc84
6 changed files with 92 additions and 85 deletions
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33
tests/migrations/test_autodetector.py
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@ -77,9 +77,7 @@ class AutodetectorTests(TestCase):
return output
def assertNumberMigrations(self, changes, app_label, number):
if not changes.get(app_label, None):
self.fail("No migrations found for %s\n%s" % (app_label, self.repr_changes(changes)))
if len(changes[app_label]) != number:
if len(changes.get(app_label, [])) != number:
self.fail("Incorrect number of migrations (%s) for %s (expected %s)\n%s" % (
len(changes[app_label]),
app_label,
@ -285,7 +283,7 @@ class AutodetectorTests(TestCase):
changes = autodetector._detect_changes()
# Right number of migrations for model rename?
self.assertEqual(len(changes['testapp']), 1)
self.assertNumberMigrations(changes, 'testapp', 1)
# Right number of actions?
migration = changes['testapp'][0]
self.assertEqual(len(migration.operations), 1)
@ -294,17 +292,9 @@ class AutodetectorTests(TestCase):
self.assertEqual(action.__class__.__name__, "RenameModel")
self.assertEqual(action.old_name, "Author")
self.assertEqual(action.new_name, "Writer")
# Right number of migrations for related field rename?
self.assertEqual(len(changes['otherapp']), 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 1)
# Right action?
action = migration.operations[0]
self.assertEqual(action.__class__.__name__, "AlterField")
self.assertEqual(action.name, "author")
self.assertEqual(action.field.rel.to, "testapp.Writer")
# Now that RenameModel handles related fields too, there should be
# no AlterField for the related field.
self.assertNumberMigrations(changes, 'otherapp', 0)
def test_rename_model_with_renamed_rel_field(self):
"""
@ -316,9 +306,8 @@ class AutodetectorTests(TestCase):
after = self.make_project_state([self.author_renamed_with_book, self.book_with_field_and_author_renamed])
autodetector = MigrationAutodetector(before, after, MigrationQuestioner({"ask_rename_model": True, "ask_rename": True}))
changes = autodetector._detect_changes()
# Right number of migrations for model rename?
self.assertEqual(len(changes['testapp']), 1)
self.assertNumberMigrations(changes, 'testapp', 1)
# Right number of actions?
migration = changes['testapp'][0]
self.assertEqual(len(migration.operations), 1)
@ -327,21 +316,17 @@ class AutodetectorTests(TestCase):
self.assertEqual(action.__class__.__name__, "RenameModel")
self.assertEqual(action.old_name, "Author")
self.assertEqual(action.new_name, "Writer")
# Right number of migrations for related field rename?
self.assertEqual(len(changes['otherapp']), 1)
# Alter is already taken care of.
self.assertNumberMigrations(changes, 'otherapp', 1)
# Right number of actions?
migration = changes['otherapp'][0]
self.assertEqual(len(migration.operations), 2)
self.assertEqual(len(migration.operations), 1)
# Right actions?
action = migration.operations[0]
self.assertEqual(action.__class__.__name__, "RenameField")
self.assertEqual(action.old_name, "author")
self.assertEqual(action.new_name, "writer")
action = migration.operations[1]
self.assertEqual(action.__class__.__name__, "AlterField")
self.assertEqual(action.name, "writer")
self.assertEqual(action.field.rel.to, "testapp.Writer")
def test_fk_dependency(self):
"Tests that having a ForeignKey automatically adds a dependency"