def test_many_to_one_mapping_cache_with_save(self):
"""
Cache should be invalidated when calling 'save' on related objects
"""
car2 = CarFactory.create(make=self.manufacturer)
len(Manufacturer.objects.get(id=self.manufacturer.id).cars.all())
car2.name = 'gti'
car2.save()
reset_queries()
# Only 1 cache (the one for car selection query) will be invalidated
# as we only update data on Car table
len(Manufacturer.objects.get(id=self.manufacturer.id).cars.all())
self.assertEqual(len(connection.queries), 1)
def test_many_to_many_mapping_cache_with_delete(self):
"""
Cache should be invalidated when calling 'delete' on related objects
"""
car2 = CarFactory.create()
self.driver.cars.add(car2)
initial_count = len(Driver.objects.get(id=self.driver.id).cars.all())
car2.delete()
reset_queries()
# Only 1 cache (the one for car selection query) will be invalidated
# as we only delete data on Car table
new_count = len(Driver.objects.get(id=self.driver.id).cars.all())
self.assertEqual(len(connection.queries), 1)
self.assertEqual(initial_count - 1, new_count)
def test_many_to_many_mapping_cache_with_save(self):
"""
Cache should be invalidated when calling 'save' on related objects
"""
car2 = CarFactory.create()
self.driver.cars.add(car2)
Driver.objects.get(id=self.driver.id).cars.all()[0].year
car2.name = 'gti'
car2.save()
reset_queries()
# Only 1 cache (the one for car selection query) will be invalidated
# as we only update data on Car table
Driver.objects.get(id=self.driver.id).cars.all()[0].year
self.assertEqual(len(connection.queries), 1)
def test_many_to_many_mapping_cache_with_delete(self):
"""
Cache should be invalidated when calling 'delete' on related objects
"""
car2 = CarFactory.create()
self.driver.cars.add(car2)
initial_count = len(Driver.objects.get(id=self.driver.id).cars.all())
car2.delete()
reset_queries()
# Only 1 cache (the one for car selection query) will be invalidated
# as we only delete data on Car table
new_count = len(Driver.objects.get(id=self.driver.id).cars.all())
self.assertEqual(len(connection.queries), 1)
self.assertEqual(initial_count - 1, new_count)
def test_many_to_one_mapping_cache_with_save(self):
"""
Cache should be invalidated when calling 'save' on related objects
"""
car2 = CarFactory.create(make=self.manufacturer)
len(Manufacturer.objects.get(id=self.manufacturer.id).cars.all())
car2.name = 'gti'
car2.save()
reset_queries()
# Only 1 cache (the one for car selection query) will be invalidated
# as we only update data on Car table
len(Manufacturer.objects.get(id=self.manufacturer.id).cars.all())
# Because of m2m fix the no. of queries will be 2 instead of 1
self.assertEqual(len(connection.queries), 2)
def test_many_to_many_mapping_cache(self):
"""
Queries should be cached when making the same select queries
on related objects repeatedly
"""
car2 = CarFactory.create()
self.driver.cars.add(car2)
reset_queries()
for i in range(5):
Driver.objects.get(id=self.driver.id).cars.all()[0].year
# The above query is actually composed of 2 sql queries:
# one for fetching drivers and the other cars.
self.assertEqual(len(connection.queries), 2)
# no. of cars for the driver increased by 1
self.assertEqual(len(self.driver.cars.all()), 2)
def test_many_to_many_mapping_cache(self):
"""
Queries should be cached when making the same select queries
on related objects repeatedly
"""
car2 = CarFactory.create()
self.driver.cars.add(car2)
reset_queries()
for i in range(5):
Driver.objects.get(id=self.driver.id).cars.all()[0].year
# The above query is actually composed of 2 sql queries:
# one for fetching drivers and the other cars.
self.assertEqual(len(connection.queries), 2)
# no. of cars for the driver increased by 1
self.assertEqual(len(self.driver.cars.all()), 2)
def test_many_to_many_mapping_cache_with_remove(self):
"""
Cache for both models in this many-to-many relationship should
be updated when calling 'remove' on related objects
"""
new_car = CarFactory.create()
self.driver.cars.add(new_car)
Driver.objects.get(id=self.driver.id).cars.all()[0].year
number_of_cars = len(self.driver.cars.all())
self.driver.cars.remove(self.car)
reset_queries()
# Cache for both models should be invalidated as remove is an m2m change
Driver.objects.get(id=self.driver.id).cars.all()[0].year
self.assertEqual(len(connection.queries), 2)
# number of cars decreases by 1
self.assertEqual(len(self.driver.cars.all()), number_of_cars - 1)
def test_many_to_one_mapping_cache_with_delete(self):
"""
Cache should be invalidated when calling 'delete' on related objects
"""
car2 = CarFactory.create(make=self.manufacturer)
initial_count = len(
Manufacturer.objects.get(id=self.manufacturer.id).cars.all())
car2.delete()
reset_queries()
# Only 1 cache (the one for car selection query) will be invalidated
# as we only delete data on Car table
new_count = len(
Manufacturer.objects.get(id=self.manufacturer.id).cars.all())
# Because of m2m fix the no. of queries will be 2 instead of 1
self.assertEqual(len(connection.queries), 2)
self.assertEqual(initial_count - 1, new_count)
def test_many_to_many_mapping_cache_with_remove(self):
"""
Cache for both models in this many-to-many relationship should
be updated when calling 'remove' on related objects
"""
new_car = CarFactory.create()
self.driver.cars.add(new_car)
Driver.objects.get(id=self.driver.id).cars.all()[0].year
number_of_cars = len(self.driver.cars.all())
self.driver.cars.remove(self.car)
reset_queries()
# Cache for both models should be invalidated as remove is an m2m change
Driver.objects.get(id=self.driver.id).cars.all()[0].year
self.assertEqual(len(connection.queries), 2)
# number of cars decreases by 1
self.assertEqual(len(self.driver.cars.all()), number_of_cars - 1)
def setUp(self):
self.manufacturer = ManufacturerFactory.create()
self.car = CarFactory.create(make=self.manufacturer, year=2015)
reset_queries()
def setUp(self):
self.engine = EngineFactory.create(name='test_engine')
self.car = CarFactory.create(engine=self.engine, year=2015)
reset_queries()
def setUp(self):
self.engine = EngineFactory.create(name='test_engine')
self.car = CarFactory.create(engine=self.engine, year=2015)
reset_queries()
def setUp(self):
self.car = CarFactory.create(year=2015)
self.driver = DriverFactory.create(cars=[self.car])
reset_queries()
def setUp(self):
self.manufacturer = ManufacturerFactory.create()
self.car = CarFactory.create(make=self.manufacturer, year=2015)
reset_queries()
def setUp(self):
self.car = CarFactory.create(year=2015)
self.driver = DriverFactory.create(cars=[self.car])
reset_queries()
def test_cached_model_updated(self, update_model_cache):
self.assertEqual(update_model_cache.call_count, 0)
CarFactory.create()
self.assertGreater(update_model_cache.call_count, 0)
def setUp(self):
self.manufacturer = ManufacturerFactory.create(name='Honda')
self.car = CarFactory.create(make=self.manufacturer, year=2015, model='Civic')
reset_queries()
def setUp(self):
self.manufacturer = ManufacturerFactory.create(name='Honda')
self.car = CarFactory.create(make=self.manufacturer,
year=2015,
model='Civic')
reset_queries()