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import sqlalchemy as sa
from flexmock import flexmock
from pytest import mark, raises
from sqlalchemy_utils import Choice, ChoiceType, ImproperlyConfigured
from sqlalchemy_utils.types.choice import Enum
from tests import TestCase
class TestChoice(object):
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)
class TestChoiceType(TestCase):
def create_models(self):
class User(self.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
self.User = User
def test_python_type(self):
type_ = self.User.__table__.c.type.type
assert type_.python_type
def test_string_processing(self):
flexmock(ChoiceType).should_receive('_coerce').and_return(
u'admin'
)
user = self.User(
type=u'admin'
)
self.session.add(user)
self.session.commit()
user = self.session.query(self.User).first()
assert user.type.value == u'Admin'
def test_parameter_processing(self):
user = self.User(
type=u'admin'
)
self.session.add(user)
self.session.commit()
user = self.session.query(self.User).first()
assert user.type.value == u'Admin'
def test_scalar_attributes_get_coerced_to_objects(self):
user = self.User(type=u'admin')
assert isinstance(user.type, Choice)
def test_throws_exception_if_no_choices_given(self):
with raises(ImproperlyConfigured):
ChoiceType([])
class TestChoiceTypeWithCustomUnderlyingType(TestCase):
def test_init_type(self):
type_ = ChoiceType([(1, u'something')], impl=sa.Integer)
assert type_.impl == sa.Integer
@mark.skipif('Enum is None')
class TestEnumType(TestCase):
def create_models(self):
class OrderStatus(Enum):
unpaid = 0
paid = 1
class Order(self.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 'Order(%r, %r)' % (self.id_, self.status)
class OrderNullable(self.Base):
__tablename__ = 'order_nullable'
id_ = sa.Column(sa.Integer, primary_key=True)
status = sa.Column(
ChoiceType(OrderStatus, impl=sa.Integer()),
nullable=True,
)
self.OrderStatus = OrderStatus
self.Order = Order
self.OrderNullable = OrderNullable
def test_parameter_initialization(self):
order = self.Order()
self.session.add(order)
self.session.commit()
order = self.session.query(self.Order).first()
assert order.status is self.OrderStatus.unpaid
assert order.status.value == 0
def test_setting_by_value(self):
order = self.Order()
order.status = 1
self.session.add(order)
self.session.commit()
order = self.session.query(self.Order).first()
assert order.status is self.OrderStatus.paid
def test_setting_by_enum(self):
order = self.Order()
order.status = self.OrderStatus.paid
self.session.add(order)
self.session.commit()
order = self.session.query(self.Order).first()
assert order.status is self.OrderStatus.paid
def test_setting_value_that_resolves_to_none(self):
order = self.Order()
order.status = 0
self.session.add(order)
self.session.commit()
order = self.session.query(self.Order).first()
assert order.status is self.OrderStatus.unpaid
def test_setting_to_wrong_enum_raises_valueerror(self):
class WrongEnum(Enum):
foo = 0
bar = 1
order = self.Order()
with raises(ValueError):
order.status = WrongEnum.foo
def test_setting_to_uncoerceable_type_raises_valueerror(self):
order = self.Order()
with raises(ValueError):
order.status = 'Bad value'
def test_order_nullable_stores_none(self):
# 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 = self.OrderNullable()
assert order_nullable.status is None
order_nullable.status = None
self.session.add(order_nullable)
self.session.commit()
assert order_nullable.status is None
|
