def test_savable_object(historian: mincepy.Historian):
"""Test basic properties and functions of a savable object"""
car = Car('smart', 'black')
car_id = car.save()
car.set_meta({'reg': 'VD395'})
del car
loaded = historian.load(car_id) # type: Car
assert loaded.make == 'smart'
assert loaded.colour == 'black'
assert loaded.get_meta() == {'reg': 'VD395'}
loaded.update_meta({'driver': 'martin'})
assert loaded.get_meta() == {'reg': 'VD395', 'driver': 'martin'}
assert loaded.obj_id == car_id
loaded.make = 'honda'
loaded.save()
del loaded
reloaded = historian.load(car_id)
assert reloaded.make == 'honda'
def test_meta_distinct(historian: mincepy.Historian):
car1 = Car()
car2 = Car()
car3 = Car()
historian.save(car1, car2, car3)
car1.set_meta({'owner': 'martin'})
car2.set_meta({'owner': 'bob'})
car3.set_meta({'owner': 'martin'})
assert set(historian.meta.distinct('owner')) == {'martin', 'bob'}