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test_activerecord.py
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test_activerecord.py
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import unittest
import sqlalchemy
import sqlalchemy as sa
from sqlalchemy import create_engine
from sqlalchemy.ext.hybrid import hybrid_property
from sqlalchemy.orm import Query, Session, DeclarativeBase, declarative_base
from sqlalchemy_mixins import ActiveRecordMixin
from sqlalchemy_mixins.activerecord import ModelNotFoundError
class Base(DeclarativeBase):
__abstract__ = True
AlternativeBase = declarative_base()
engine = create_engine('sqlite:///:memory:', echo=False)
sess = Session(engine)
# sess = scoped_session(sessionmaker(bind=engine))
class BaseModel(Base, ActiveRecordMixin):
__abstract__ = True
pass
class BaseModelAlternative(AlternativeBase, ActiveRecordMixin):
__abstract__ = True
class User(BaseModel):
__tablename__ = 'user'
__repr_attrs__ = ['name']
id = sa.Column(sa.Integer, primary_key=True)
name = sa.Column(sa.String)
posts = sa.orm.relationship('Post', backref='user')
posts_viewonly = sa.orm.relationship('Post', viewonly=True)
class UserAlternative(BaseModelAlternative):
__tablename__ = 'user_alt'
__repr_attrs__ = ['name']
id = sa.Column(sa.Integer, primary_key=True)
name = sa.Column(sa.String)
class Post(BaseModel):
__tablename__ = 'post'
id = sa.Column(sa.Integer, primary_key=True)
body = sa.Column(sa.String)
user_id = sa.Column(sa.Integer, sa.ForeignKey('user.id'))
archived = sa.Column(sa.Boolean, default=False)
# user = backref from User.post
comments = sa.orm.relationship('Comment', backref='post')
@hybrid_property
def public(self):
return not self.archived
@public.setter
def public(self, public):
self.archived = not public
class Comment(BaseModel):
__tablename__ = 'comment'
__repr_attrs__ = ['body']
id = sa.Column(sa.Integer, primary_key=True)
body = sa.Column(sa.String)
user_id = sa.Column(sa.Integer, sa.ForeignKey('user.id'))
post_id = sa.Column(sa.Integer, sa.ForeignKey('post.id'))
user = sa.orm.relationship('User', backref='comments')
# post = backref from Post.comments
class TestActiveRecord(unittest.TestCase):
def setUp(self):
sess.rollback()
BaseModel.set_session(None)
Base.metadata.drop_all(engine)
Base.metadata.create_all(engine)
BaseModel.set_session(sess)
def test_settable_attributes(self):
self.assertEqual(set(User.settable_attributes),
{'id', 'name', # normal columns
'posts', 'comments' # relations
})
self.assertNotIn('posts_viewonly', set(User.settable_attributes))
self.assertEqual(set(Post.settable_attributes),
{'id', 'body', 'user_id', 'archived',
# normal columns
'user', 'comments', # relations
'public' # hybrid attributes
})
self.assertEqual(set(Comment.settable_attributes),
{'id', 'body', 'post_id', 'user_id', # normal columns
'user', 'post' # hybrid attributes
})
def test_fill_and_save(self):
u1 = User()
u1.fill(name='Bill u1')
u1.save()
self.assertEqual(u1, sess.query(User).first())
p11 = Post()
p11.fill(body='p11', user=u1, public=False)
p11.save()
self.assertEqual(p11, sess.query(Post).first())
self.assertEqual(p11.archived, True)
def test_save_commits(self):
with self.assertRaises(sqlalchemy.exc.InvalidRequestError):
with sess.begin():
u1 = User()
u1.fill(name='Bill u1')
u1.save()
u2 = User()
u2.fill(name='Bill u2')
u2.save()
self.assertEqual([u1, u2], sess.query(User).order_by(User.id.asc()).all())
# The first user is saved even when the block raises a Exception
self.assertEqual([u1], sess.query(User).order_by(User.id.asc()).all())
def test_save_do_not_commit(self):
with sess.begin():
u1 = User()
u1.fill(name='Bill u1')
u1.save(commit=False)
u2 = User()
u2.fill(name='Bill u2')
u2.save(commit=False)
self.assertEqual([u1,u2], sess.query(User).order_by(User.id.asc()).all())
def test_create(self):
u1 = User.create(name='Bill u1')
self.assertEqual(u1, sess.query(User).first())
p11 = Post.create(body='p11', user=u1, public=False)
self.assertEqual(p11, sess.query(Post).first())
self.assertEqual(p11.archived, True)
@staticmethod
def _seed():
u1 = User(name='Bill', id=1)
sess.add(u1)
sess.flush()
u2 = User(name='Bishop', id=2)
sess.add(u2)
sess.flush()
p11 = Post(body='p11', user=u1, public=False, id=11)
sess.add(p11)
sess.flush()
p12 = Post(body='p12', user=u2, id=12)
sess.add(p12)
sess.flush()
p13 = Post(body='p13', user=u1, id=13)
sess.add(p13)
sess.flush()
return u1, u2, p11, p12, p13
def test_update(self):
u1, u2, p11, p12, p13 = self._seed()
self.assertEqual(sess.query(Post).get(11).body, 'p11')
self.assertEqual(sess.query(Post).get(11).public, False)
self.assertEqual(sess.query(Post).get(11).user, u1)
p11.update(body='new body', public=True, user=u2)
self.assertEqual(sess.query(Post).get(11).body, 'new body')
self.assertEqual(sess.query(Post).get(11).public, True)
self.assertEqual(sess.query(Post).get(11).user, u2)
def test_update_no_commit(self):
u1 = User(name='Bill', id=1)
u1.save()
u1.update(name='Joe', commit=False)
self.assertEqual('Joe', sess.query(User).where(User.id==1).first().name)
sess.rollback()
self.assertEqual('Bill', sess.query(User).where(User.id==1).first().name)
def test_fill_wrong_attribute(self):
u1 = User(name='Bill u1')
sess.add(u1)
sess.flush()
with self.assertRaises(KeyError):
u1.fill(INCORRECT_ATTRUBUTE='nomatter')
with self.assertRaises(KeyError):
u1.update(INCORRECT_ATTRUBUTE='nomatter')
with self.assertRaises(KeyError):
User.create(INCORRECT_ATTRUBUTE='nomatter')
def test_delete(self):
u1, u2, p11, p12, p13 = self._seed()
self.assertEqual(sess.query(User).get(1), u1)
u1.delete()
self.assertEqual(sess.query(User).get(1), None)
def test_delete_without_commit(self):
u1 = User()
u1.save()
u1.delete(commit=False)
self.assertIsNone(sess.query(User).one_or_none())
sess.rollback()
self.assertIsNotNone(sess.query(User).one_or_none())
def test_destroy(self):
u1, u2, p11, p12, p13 = self._seed()
self.assertEqual(set(sess.query(Post).all()), {p11, p12, p13})
Post.destroy(11, 12)
self.assertEqual(set(sess.query(Post).all()), {p13})
def test_destroy_no_commit(self):
u1, u2, p11, p12, p13 = self._seed()
sess.commit()
self.assertEqual(set(sess.query(Post).order_by(Post.id).all()), {p11, p12, p13})
Post.destroy(11, 12, commit=False)
self.assertEqual(set(sess.query(Post).order_by(Post.id).all()), {p13})
sess.rollback()
self.assertEqual(set(sess.query(Post).order_by(Post.id).all()), {p11, p12, p13})
def test_all(self):
u1, u2, p11, p12, p13 = self._seed()
self.assertEqual(set(User.all()), {u1, u2})
self.assertEqual(set(Post.all()), {p11, p12, p13})
def test_first(self):
u1 = User()
sess.add(u1)
sess.flush()
self.assertEqual(User.first(), u1)
def test_find(self):
u1, u2, p11, p12, p13 = self._seed()
self.assertEqual(User.find(1), u1)
self.assertEqual(User.find(2), u2)
self.assertEqual(User.find(123456789), None)
def test_find_or_fail(self):
u1, u2, p11, p12, p13 = self._seed()
self.assertEqual(User.find_or_fail(1), u1)
self.assertEqual(User.find_or_fail(2), u2)
with self.assertRaises(ModelNotFoundError):
_ = User.find_or_fail(123456789)
class TestActiveRecordAlternative(unittest.TestCase):
def setUp(self):
sess.rollback()
BaseModelAlternative.set_session(None)
AlternativeBase.metadata.drop_all(engine)
AlternativeBase.metadata.create_all(engine)
BaseModelAlternative.set_session(sess)
def test_create(self):
u1 = UserAlternative.create(name='Bill u1')
self.assertEqual(u1, sess.query(UserAlternative).first())
def test_create_no_commit(self):
u1 = UserAlternative.create(name='Bill u1', commit=False)
self.assertEqual(u1, sess.query(UserAlternative).first())
sess.rollback()
self.assertIsNone(sess.query(UserAlternative).one_or_none())
if __name__ == '__main__': # pragma: no cover
unittest.main()