From 13d310fa14f4e4b9a559f8b7887f2a2492357013 Mon Sep 17 00:00:00 2001 From: Raphaël Barrois Date: Sun, 16 Nov 2014 22:34:29 +0100 Subject: Remove automagic pk-based sequence setup Related to issues #78, #92, #103, #111, #153, #170 The default value of all sequences is now 0; the automagic ``_setup_next_sequence`` behavior of Django/SQLAlchemy has been removed. This feature's only goal was to allow the following scenario: 1. Run a Python script that uses MyFactory.create() a couple of times (with a unique field based on the sequence counter) 2. Run the same Python script a second time Without the magical ``_setup_next_sequence``, the Sequence counter would be set to 0 at the beginning of each script run, so both runs would generate objects with the same values for the unique field ; thus conflicting and crashing. The above behavior having only a very limited use and bringing various issues (hitting the database on ``build()``, problems with non-integer or composite primary key columns, ...), it has been removed. It could still be emulated through custom ``_setup_next_sequence`` methods, or by calling ``MyFactory.reset_sequence()``. --- docs/changelog.rst | 13 ++++++++++++- docs/orms.rst | 2 -- factory/alchemy.py | 12 ------------ factory/django.py | 15 --------------- tests/test_alchemy.py | 22 +++++++++++----------- tests/test_django.py | 40 ++++++++++++++++++++-------------------- tests/test_using.py | 20 +++++++------------- 7 files changed, 50 insertions(+), 74 deletions(-) diff --git a/docs/changelog.rst b/docs/changelog.rst index 7d77f7f..018ec60 100644 --- a/docs/changelog.rst +++ b/docs/changelog.rst @@ -2,6 +2,17 @@ ChangeLog ========= +.. _v2.5.0: + +2.5.0 (master) +-------------- + +*Deprecation:* + + - Remove deprecated features from :ref:`v2.4.0` + - Remove the auto-magical sequence setup (based on the latest primary key value in the database) for Django and SQLAlchemy; + this relates to issues :issue:`170`, :issue:`153`, :issue:`111`, :issue:`103`, :issue:`92`, :issue:`78`. + .. _v2.4.1: 2.4.1 (2014-06-23) @@ -19,7 +30,7 @@ ChangeLog *New:* - Add support for :attr:`factory.fuzzy.FuzzyInteger.step`, thanks to `ilya-pirogov `_ (:issue:`120`) - - Add :meth:`~factory.django.mute_signals` decorator to temporarily disable some signals, thanks to `ilya-pirogov `_ (:issue:`122`) + - Add :meth:`~factory.django.mute_signals` decorator to temporarily disable some signals, thanks to `ilya-pirogov `_ (:issue:`122`) - Add :class:`~factory.fuzzy.FuzzyFloat` (:issue:`124`) - Declare target model and other non-declaration fields in a ``class Meta`` section. diff --git a/docs/orms.rst b/docs/orms.rst index 2aa27b2..88d49e9 100644 --- a/docs/orms.rst +++ b/docs/orms.rst @@ -35,7 +35,6 @@ All factories for a Django :class:`~django.db.models.Model` should use the * The :attr:`~factory.FactoryOptions.model` attribute also supports the ``'app.Model'`` syntax * :func:`~factory.Factory.create()` uses :meth:`Model.objects.create() ` - * :func:`~factory.Factory._setup_next_sequence()` selects the next unused primary key value * When using :class:`~factory.RelatedFactory` or :class:`~factory.PostGeneration` attributes, the base object will be :meth:`saved ` once all post-generation hooks have run. @@ -284,7 +283,6 @@ To work, this class needs an `SQLAlchemy`_ session object affected to the :attr: This class provides the following features: * :func:`~factory.Factory.create()` uses :meth:`sqlalchemy.orm.session.Session.add` - * :func:`~factory.Factory._setup_next_sequence()` selects the next unused primary key value .. attribute:: FACTORY_SESSION diff --git a/factory/alchemy.py b/factory/alchemy.py index 3c91411..2cd28bb 100644 --- a/factory/alchemy.py +++ b/factory/alchemy.py @@ -43,18 +43,6 @@ class SQLAlchemyModelFactory(base.Factory): 'FACTORY_SESSION': 'sqlalchemy_session', }) - @classmethod - def _setup_next_sequence(cls, *args, **kwargs): - """Compute the next available PK, based on the 'pk' database field.""" - session = cls._meta.sqlalchemy_session - model = cls._meta.model - pk = getattr(model, model.__mapper__.primary_key[0].name) - max_pk = session.query(max(pk)).one()[0] - if isinstance(max_pk, int): - return max_pk + 1 if max_pk else 1 - else: - return 1 - @classmethod def _create(cls, model_class, *args, **kwargs): """Create an instance of the model, and save it to the database.""" diff --git a/factory/django.py b/factory/django.py index 2b6c463..c58a6e2 100644 --- a/factory/django.py +++ b/factory/django.py @@ -109,21 +109,6 @@ class DjangoModelFactory(base.Factory): except AttributeError: return model_class.objects - @classmethod - def _setup_next_sequence(cls): - """Compute the next available PK, based on the 'pk' database field.""" - - model = cls._get_model_class() # pylint: disable=E1101 - manager = cls._get_manager(model) - - try: - return 1 + manager.values_list('pk', flat=True - ).order_by('-pk')[0] - except (IndexError, TypeError): - # IndexError: No instance exist yet - # TypeError: pk isn't an integer type - return 1 - @classmethod def _get_or_create(cls, model_class, *args, **kwargs): """Create an instance of the model through objects.get_or_create.""" diff --git a/tests/test_alchemy.py b/tests/test_alchemy.py index b9222eb..2deb418 100644 --- a/tests/test_alchemy.py +++ b/tests/test_alchemy.py @@ -88,18 +88,18 @@ class SQLAlchemyPkSequenceTestCase(unittest.TestCase): StandardFactory.reset_sequence() std2 = StandardFactory.create() - self.assertEqual('foo2', std2.foo) - self.assertEqual(2, std2.id) + self.assertEqual('foo0', std2.foo) + self.assertEqual(0, std2.id) def test_pk_force_value(self): std1 = StandardFactory.create(id=10) - self.assertEqual('foo1', std1.foo) # sequence was set before pk + self.assertEqual('foo1', std1.foo) # sequence and pk are unrelated self.assertEqual(10, std1.id) StandardFactory.reset_sequence() std2 = StandardFactory.create() - self.assertEqual('foo11', std2.foo) - self.assertEqual(11, std2.id) + self.assertEqual('foo0', std2.foo) # Sequence doesn't care about pk + self.assertEqual(0, std2.id) @unittest.skipIf(sqlalchemy is None, "SQLalchemy not installed.") @@ -111,22 +111,22 @@ class SQLAlchemyNonIntegerPkTestCase(unittest.TestCase): def test_first(self): nonint = NonIntegerPkFactory.build() - self.assertEqual('foo1', nonint.id) + self.assertEqual('foo0', nonint.id) def test_many(self): nonint1 = NonIntegerPkFactory.build() nonint2 = NonIntegerPkFactory.build() - self.assertEqual('foo1', nonint1.id) - self.assertEqual('foo2', nonint2.id) + self.assertEqual('foo0', nonint1.id) + self.assertEqual('foo1', nonint2.id) def test_creation(self): nonint1 = NonIntegerPkFactory.create() - self.assertEqual('foo1', nonint1.id) + self.assertEqual('foo0', nonint1.id) NonIntegerPkFactory.reset_sequence() nonint2 = NonIntegerPkFactory.build() - self.assertEqual('foo1', nonint2.id) + self.assertEqual('foo0', nonint2.id) def test_force_pk(self): nonint1 = NonIntegerPkFactory.create(id='foo10') @@ -134,4 +134,4 @@ class SQLAlchemyNonIntegerPkTestCase(unittest.TestCase): NonIntegerPkFactory.reset_sequence() nonint2 = NonIntegerPkFactory.create() - self.assertEqual('foo1', nonint2.id) + self.assertEqual('foo0', nonint2.id) diff --git a/tests/test_django.py b/tests/test_django.py index 874c272..0cbef19 100644 --- a/tests/test_django.py +++ b/tests/test_django.py @@ -174,32 +174,32 @@ class DjangoPkSequenceTestCase(django_test.TestCase): def test_pk_first(self): std = StandardFactory.build() - self.assertEqual('foo1', std.foo) + self.assertEqual('foo0', std.foo) def test_pk_many(self): std1 = StandardFactory.build() std2 = StandardFactory.build() - self.assertEqual('foo1', std1.foo) - self.assertEqual('foo2', std2.foo) + self.assertEqual('foo0', std1.foo) + self.assertEqual('foo1', std2.foo) def test_pk_creation(self): std1 = StandardFactory.create() - self.assertEqual('foo1', std1.foo) + self.assertEqual('foo0', std1.foo) self.assertEqual(1, std1.pk) StandardFactory.reset_sequence() std2 = StandardFactory.create() - self.assertEqual('foo2', std2.foo) + self.assertEqual('foo0', std2.foo) self.assertEqual(2, std2.pk) def test_pk_force_value(self): std1 = StandardFactory.create(pk=10) - self.assertEqual('foo1', std1.foo) # sequence was set before pk + self.assertEqual('foo0', std1.foo) # sequence is unrelated to pk self.assertEqual(10, std1.pk) StandardFactory.reset_sequence() std2 = StandardFactory.create() - self.assertEqual('foo11', std2.foo) + self.assertEqual('foo0', std2.foo) self.assertEqual(11, std2.pk) @@ -212,12 +212,12 @@ class DjangoPkForceTestCase(django_test.TestCase): def test_no_pk(self): std = StandardFactoryWithPKField() self.assertIsNotNone(std.pk) - self.assertEqual('foo1', std.foo) + self.assertEqual('foo0', std.foo) def test_force_pk(self): std = StandardFactoryWithPKField(pk=42) self.assertIsNotNone(std.pk) - self.assertEqual('foo1', std.foo) + self.assertEqual('foo0', std.foo) def test_reuse_pk(self): std1 = StandardFactoryWithPKField(foo='bar') @@ -286,9 +286,9 @@ class DjangoModelLoadingTestCase(django_test.TestCase): self.assertEqual(models.StandardModel, e1.__class__) self.assertEqual(models.StandardSon, e2.__class__) self.assertEqual(models.StandardModel, e3.__class__) - self.assertEqual(1, e1.foo) - self.assertEqual(2, e2.foo) - self.assertEqual(3, e3.foo) + self.assertEqual(0, e1.foo) + self.assertEqual(1, e2.foo) + self.assertEqual(2, e3.foo) @unittest.skipIf(django is None, "Django not installed.") @@ -299,23 +299,23 @@ class DjangoNonIntegerPkTestCase(django_test.TestCase): def test_first(self): nonint = NonIntegerPkFactory.build() - self.assertEqual('foo1', nonint.foo) + self.assertEqual('foo0', nonint.foo) def test_many(self): nonint1 = NonIntegerPkFactory.build() nonint2 = NonIntegerPkFactory.build() - self.assertEqual('foo1', nonint1.foo) - self.assertEqual('foo2', nonint2.foo) + self.assertEqual('foo0', nonint1.foo) + self.assertEqual('foo1', nonint2.foo) def test_creation(self): nonint1 = NonIntegerPkFactory.create() - self.assertEqual('foo1', nonint1.foo) - self.assertEqual('foo1', nonint1.pk) + self.assertEqual('foo0', nonint1.foo) + self.assertEqual('foo0', nonint1.pk) NonIntegerPkFactory.reset_sequence() nonint2 = NonIntegerPkFactory.build() - self.assertEqual('foo1', nonint2.foo) + self.assertEqual('foo0', nonint2.foo) def test_force_pk(self): nonint1 = NonIntegerPkFactory.create(pk='foo10') @@ -324,8 +324,8 @@ class DjangoNonIntegerPkTestCase(django_test.TestCase): NonIntegerPkFactory.reset_sequence() nonint2 = NonIntegerPkFactory.create() - self.assertEqual('foo1', nonint2.foo) - self.assertEqual('foo1', nonint2.pk) + self.assertEqual('foo0', nonint2.foo) + self.assertEqual('foo0', nonint2.pk) @unittest.skipIf(django is None, "Django not installed.") diff --git a/tests/test_using.py b/tests/test_using.py index 8d78789..8aba8b6 100644 --- a/tests/test_using.py +++ b/tests/test_using.py @@ -1490,12 +1490,6 @@ class BetterFakeModelManager(object): instance.id = 2 return instance, True - def values_list(self, *args, **kwargs): - return self - - def order_by(self, *args, **kwargs): - return [1] - class BetterFakeModel(object): @classmethod @@ -1618,14 +1612,14 @@ class DjangoModelFactoryTestCase(unittest.TestCase): o1 = TestModelFactory() o2 = TestModelFactory() - self.assertEqual('foo_2', o1.a) - self.assertEqual('foo_3', o2.a) + self.assertEqual('foo_0', o1.a) + self.assertEqual('foo_1', o2.a) o3 = TestModelFactory.build() o4 = TestModelFactory.build() - self.assertEqual('foo_4', o3.a) - self.assertEqual('foo_5', o4.a) + self.assertEqual('foo_2', o3.a) + self.assertEqual('foo_3', o4.a) def test_no_get_or_create(self): class TestModelFactory(factory.django.DjangoModelFactory): @@ -1636,7 +1630,7 @@ class DjangoModelFactoryTestCase(unittest.TestCase): o = TestModelFactory() self.assertEqual(None, o._defaults) - self.assertEqual('foo_2', o.a) + self.assertEqual('foo_0', o.a) self.assertEqual(2, o.id) def test_get_or_create(self): @@ -1652,7 +1646,7 @@ class DjangoModelFactoryTestCase(unittest.TestCase): o = TestModelFactory() self.assertEqual({'c': 3, 'd': 4}, o._defaults) - self.assertEqual('foo_2', o.a) + self.assertEqual('foo_0', o.a) self.assertEqual(2, o.b) self.assertEqual(3, o.c) self.assertEqual(4, o.d) @@ -1672,7 +1666,7 @@ class DjangoModelFactoryTestCase(unittest.TestCase): o = TestModelFactory() self.assertEqual({}, o._defaults) - self.assertEqual('foo_2', o.a) + self.assertEqual('foo_0', o.a) self.assertEqual(2, o.b) self.assertEqual(3, o.c) self.assertEqual(4, o.d) -- cgit v1.2.3