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Code Issues 32 Releases Wiki Activity

[1.7.x] Fixed #22496: Data migrations get transactions again!

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Andrew Godwin
2014-05-07 14:28:34 -07:00
parent d8bf415ab2
commit 7f63ac5a9f
5 changed files with 65 additions and 4 deletions
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37
tests/migrations/test_operations.py
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@@ -752,6 +752,43 @@ class OperationTests(MigrationTestBase):
self.assertEqual(project_state.render().get_model("test_runpython", "Pony").objects.count(), 6)
self.assertEqual(project_state.render().get_model("test_runpython", "ShetlandPony").objects.count(), 2)
def test_run_python_atomic(self):
"""
Tests the RunPython operation correctly handles the "atomic" keyword
"""
project_state = self.set_up_test_model("test_runpythonatomic", mti_model=True)
def inner_method(models, schema_editor):
Pony = models.get_model("test_runpythonatomic", "Pony")
Pony.objects.create(pink=1, weight=3.55)
raise ValueError("Adrian hates ponies.")
atomic_migration = Migration("test", "test_runpythonatomic")
atomic_migration.operations = [migrations.RunPython(inner_method)]
non_atomic_migration = Migration("test", "test_runpythonatomic")
non_atomic_migration.operations = [migrations.RunPython(inner_method, atomic=False)]
# If we're a fully-transactional database, both versions should rollback
if connection.features.can_rollback_ddl:
self.assertEqual(project_state.render().get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.render().get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.render().get_model("test_runpythonatomic", "Pony").objects.count(), 0)
# Otherwise, the non-atomic operation should leave a row there
else:
self.assertEqual(project_state.render().get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.render().get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.render().get_model("test_runpythonatomic", "Pony").objects.count(), 1)
class MigrateNothingRouter(object):
"""