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import pytest
import sqlalchemy as sa
from flexmock import flexmock
from sqlalchemy_utils import Choice, ChoiceType, ImproperlyConfigured
from sqlalchemy_utils.compat import _select_args
from sqlalchemy_utils.types.choice import Enum
class TestChoice:
def test_equality_operator(self):
assert Choice(1, 1) == 1
assert 1 == Choice(1, 1)
assert Choice(1, 1) == Choice(1, 1)
def test_non_equality_operator(self):
assert Choice(1, 1) != 2
assert not (Choice(1, 1) != 1)
def test_hash(self):
assert hash(Choice(1, 1)) == hash(1)
class TestChoiceType:
@pytest.fixture
def User(self, Base):
class User(Base):
TYPES = [
('admin', 'Admin'),
('regular-user', 'Regular user')
]
__tablename__ = 'user'
id = sa.Column(sa.Integer, primary_key=True)
type = sa.Column(ChoiceType(TYPES))
def __repr__(self):
return 'User(%r)' % self.id
return User
@pytest.fixture
def init_models(self, User):
pass
def test_python_type(self, User):
type_ = User.__table__.c.type.type
assert type_.python_type
def test_string_processing(self, session, User):
flexmock(ChoiceType).should_receive('_coerce').and_return(
'admin'
)
user = User(
type='admin'
)
session.add(user)
session.commit()
user = session.query(User).first()
assert user.type.value == 'Admin'
def test_parameter_processing(self, session, User):
user = User(
type='admin'
)
session.add(user)
session.commit()
user = session.query(User).first()
assert user.type.value == 'Admin'
def test_scalar_attributes_get_coerced_to_objects(self, User):
user = User(type='admin')
assert isinstance(user.type, Choice)
def test_throws_exception_if_no_choices_given(self):
with pytest.raises(ImproperlyConfigured):
ChoiceType([])
def test_compilation(self, User, session):
query = sa.select(*_select_args(User.type))
# the type should be cacheable and not throw exception
session.execute(query)
class TestChoiceTypeWithCustomUnderlyingType:
def test_init_type(self):
type_ = ChoiceType([(1, 'something')], impl=sa.Integer)
assert type_.impl == sa.Integer
@pytest.mark.skipif('Enum is None')
class TestEnumType:
@pytest.fixture
def OrderStatus(self):
class OrderStatus(Enum):
unpaid = 0
paid = 1
return OrderStatus
@pytest.fixture
def Order(self, Base, OrderStatus):
class Order(Base):
__tablename__ = 'order'
id_ = sa.Column(sa.Integer, primary_key=True)
status = sa.Column(
ChoiceType(OrderStatus, impl=sa.Integer()),
default=OrderStatus.unpaid,
)
def __repr__(self):
return f'Order({self.id_!r}, {self.status!r})'
return Order
@pytest.fixture
def OrderNullable(self, Base, OrderStatus):
class OrderNullable(Base):
__tablename__ = 'order_nullable'
id_ = sa.Column(sa.Integer, primary_key=True)
status = sa.Column(
ChoiceType(OrderStatus, impl=sa.Integer()),
nullable=True,
)
return OrderNullable
@pytest.fixture
def init_models(self, Order, OrderNullable):
pass
def test_parameter_initialization(self, session, Order, OrderStatus):
order = Order()
session.add(order)
session.commit()
order = session.query(Order).first()
assert order.status is OrderStatus.unpaid
assert order.status.value == 0
def test_setting_by_value(self, session, Order, OrderStatus):
order = Order()
order.status = 1
session.add(order)
session.commit()
order = session.query(Order).first()
assert order.status is OrderStatus.paid
def test_setting_by_enum(self, session, Order, OrderStatus):
order = Order()
order.status = OrderStatus.paid
session.add(order)
session.commit()
order = session.query(Order).first()
assert order.status is OrderStatus.paid
def test_setting_value_that_resolves_to_none(
self,
session,
Order,
OrderStatus
):
order = Order()
order.status = 0
session.add(order)
session.commit()
order = session.query(Order).first()
assert order.status is OrderStatus.unpaid
def test_setting_to_wrong_enum_raises_valueerror(self, Order):
class WrongEnum(Enum):
foo = 0
bar = 1
order = Order()
with pytest.raises(ValueError):
order.status = WrongEnum.foo
def test_setting_to_uncoerceable_type_raises_valueerror(self, Order):
order = Order()
with pytest.raises(ValueError):
order.status = 'Bad value'
def test_order_nullable_stores_none(self, session, OrderNullable):
# With nullable=False as in `Order`, a `None` value is always
# converted to the default value, unless we explicitly set it to
# sqlalchemy.sql.null(), so we use this class to test our ability
# to set and retrive `None`.
order_nullable = OrderNullable()
assert order_nullable.status is None
order_nullable.status = None
session.add(order_nullable)
session.commit()
assert order_nullable.status is None
|
