165 lines
4.4 KiB
Python
165 lines
4.4 KiB
Python
from __future__ import unicode_literals
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import six
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import sqlalchemy as sa
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from sqlalchemy_utils import generic_relationship
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from tests import TestCase
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class TestGenericRelationship(TestCase):
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def create_models(self):
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class Employee(self.Base):
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__tablename__ = 'employee'
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id = sa.Column(sa.Integer, primary_key=True)
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name = sa.Column(sa.String(50))
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type = sa.Column(sa.String(20))
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__mapper_args__ = {
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'polymorphic_on': type,
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'polymorphic_identity': 'employee'
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}
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class Manager(Employee):
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__mapper_args__ = {
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'polymorphic_identity': 'manager'
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}
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class Engineer(Employee):
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__mapper_args__ = {
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'polymorphic_identity': 'engineer'
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}
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class Event(self.Base):
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__tablename__ = 'event'
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id = sa.Column(sa.Integer, primary_key=True)
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object_type = sa.Column(sa.Unicode(255))
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object_id = sa.Column(sa.Integer, nullable=False)
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object = generic_relationship(object_type, object_id)
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self.Employee = Employee
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self.Manager = Manager
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self.Engineer = Engineer
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self.Event = Event
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def test_set_as_none(self):
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event = self.Event()
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event.object = None
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assert event.object is None
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def test_set_manual_and_get(self):
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manager = self.Manager()
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self.session.add(manager)
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self.session.commit()
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event = self.Event()
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event.object_id = manager.id
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event.object_type = six.text_type(type(manager).__name__)
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assert event.object is None
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self.session.add(event)
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self.session.commit()
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assert event.object == manager
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def test_set_and_get(self):
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manager = self.Manager()
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self.session.add(manager)
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self.session.commit()
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event = self.Event(object=manager)
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assert event.object_id == manager.id
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assert event.object_type == type(manager).__name__
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self.session.add(event)
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self.session.commit()
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assert event.object == manager
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def test_compare_instance(self):
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manager1 = self.Manager()
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manager2 = self.Manager()
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self.session.add_all([manager1, manager2])
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self.session.commit()
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event = self.Event(object=manager1)
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self.session.add(event)
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self.session.commit()
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assert event.object == manager1
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assert event.object != manager2
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def test_compare_query(self):
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manager1 = self.Manager()
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manager2 = self.Manager()
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self.session.add_all([manager1, manager2])
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self.session.commit()
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event = self.Event(object=manager1)
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self.session.add(event)
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self.session.commit()
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q = self.session.query(self.Event)
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assert q.filter_by(object=manager1).first() is not None
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assert q.filter_by(object=manager2).first() is None
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assert q.filter(self.Event.object == manager2).first() is None
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def test_compare_not_query(self):
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manager1 = self.Manager()
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manager2 = self.Manager()
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self.session.add_all([manager1, manager2])
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self.session.commit()
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event = self.Event(object=manager1)
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self.session.add(event)
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self.session.commit()
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q = self.session.query(self.Event)
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assert q.filter(self.Event.object != manager2).first() is not None
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def test_compare_type(self):
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manager1 = self.Manager()
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manager2 = self.Manager()
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self.session.add_all([manager1, manager2])
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self.session.commit()
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event1 = self.Event(object=manager1)
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event2 = self.Event(object=manager2)
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self.session.add_all([event1, event2])
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self.session.commit()
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statement = self.Event.object.is_type(self.Manager)
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q = self.session.query(self.Event).filter(statement)
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assert q.first() is not None
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def test_compare_super_type(self):
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manager1 = self.Manager()
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manager2 = self.Manager()
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self.session.add_all([manager1, manager2])
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self.session.commit()
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event1 = self.Event(object=manager1)
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event2 = self.Event(object=manager2)
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self.session.add_all([event1, event2])
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self.session.commit()
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statement = self.Event.object.is_type(self.Employee)
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q = self.session.query(self.Event).filter(statement)
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assert q.first() is not None
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