def test_delete_new(self):
        pool = InstancePool()
        dbp = DBPool(self.env, pool)
        dbp.load_artifact(self.lightningMcQueen.get_id())

        sallyCarrera = self.Car()
        pool.add(sallyCarrera)

        dbp = DBPool(self.env, pool)
        dbp.delete(sallyCarrera, 'me', 'deleted stuff', '127.0.0.1')
        self.assertEqual(3, len(dbp.pool.get_items((0,1))))
    def test_load_artifacts_of_spec(self):
        # add a couple more instances
        pool = InstancePool()
        dbp = DBPool(self.env, pool)
        dbp.load_specs()
        car1 = self.Car(values={"License": "GO-42-42"})
        plane2 = self.Vehicle(values={"License": "GO-55-55"})
        pool.add(car1)
        pool.add(plane2)
        dbp.save('me', 'a couple more instances', '127.0.0.1')

        # load cars only
        pool = InstancePool()
        dbp = DBPool(self.env, pool)
        dbp.load_artifacts_of(self.Car.get_name())
        
        self.assertEqual(len(pool.get_items((0,))), 2)
        self.assertTrue(not pool.get_item(self.lightningMcQueen.get_id()) is None)
        self.assertTrue(not pool.get_item(car1.get_id()) is None)
    def setUp(self):
        self.env = EnvironmentStub(enable=['trac.*', 'AdaptiveArtifacts.*', 'AdaptiveArtifacts.persistence.db.*'])
        Setup(self.env).upgrade_environment(self.env.get_db_cnx())

        self.Vehicle = Entity(name="Vehicle")
        self.Car = Entity(name="Car", bases=(self.Vehicle,),
                attributes=[Attribute(name="Wheels", multiplicity=4, atype=str)]
            )
        self.lightningMcQueen = self.Car(
                values={"Wheels": ['front left wheel', 'front right wheel', 'rear left wheel', 'front right wheel']}
            )

        pool = InstancePool()
        pool.add(self.Vehicle)
        pool.add(self.Car)
        pool.add(self.lightningMcQueen)
        dbp = DBPool(self.env, pool)
        dbp.save('anonymous',"","120.0.0.1")