def test_aggregations(self):
item = models.ExampleItem()
item.name = 'Example'
item.enabled = False
item.save()
m2m_item = models.ExampleM2MItem()
m2m_item.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item,
)
observer = QueryObserver(
request(views.AggregationTestViewSet, items=[m2m_item.pk]))
observer.subscribe(
'test-session',
dependencies=[
models.ExampleItem, models.ExampleM2MItem.items.through
],
)
# There should be a dependency on the intermediate table.
observer_state = observer_models.Observer.objects.get(pk=observer.id)
dependencies = observer_state.dependencies.all().values_list('table',
flat=True)
self.assertIn('drfr_test_app_examplem2mitem_items', dependencies)
def test_conditions(self):
observer = QueryObserver(
request(views.ExampleItemViewSet, enabled=True))
items = observer.subscribe('test-session')
self.assertEqual(
observer.id,
'5333b85599fd24ed4e2f7eeaefb599cbbd39894b437e9b9d3b80d5d21639b4bb',
)
self.assertEqual(len(items), 0)
item = models.ExampleItem()
item.name = 'Example'
item.enabled = False
item.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item,
)
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 0)
self.assertEqual(len(changed), 0)
self.assertEqual(len(removed), 0)
item.enabled = True
item.save()
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 1)
self.assertEqual(
added[0]['data'],
{
'id': item.pk,
'name': item.name,
'enabled': item.enabled
},
)
self.assertEqual(len(changed), 0)
self.assertEqual(len(removed), 0)
def test_joins(self):
# Create some items so that we get a valid query (otherwise the query would be empty as django-guardian
# would discover that the user doesn't have permissions to get any items).
item = models.ExampleItem()
item.name = 'Example'
item.enabled = False
item.save()
subitem = models.ExampleSubItem(parent=item, enabled=True)
subitem.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item,
)
shortcuts.assign_perm(
'rest_framework_reactive.view_examplesubitem',
auth_models.AnonymousUser(),
subitem,
)
observer = QueryObserver(
request(views.ExampleSubItemViewSet, parent__enabled=True))
items = observer.subscribe(
'test-session',
dependencies=[models.ExampleSubItem, models.ExampleItem])
self.assertEqual(
observer.id,
'92b1698976bf1e04d155f9c60ac74c054ef872f547a59d771fc3c046998bbba8',
)
self.assertEqual(len(items), 0)
observer_state = observer_models.Observer.objects.get(pk=observer.id)
dependencies = observer_state.dependencies.all().values_list('table',
flat=True)
self.assertIn('drfr_test_app_exampleitem', dependencies)
self.assertIn('drfr_test_app_examplesubitem', dependencies)
def test_observe_viewset(self):
# Create a request and an observer for it.
observer = QueryObserver(request(views.ExampleItemViewSet))
items = observer.subscribe('test-session')
self.assertEqual(
observer.id,
'fa87c86f1e032942b699e9902ac38ca232ce3566724b3891914c80083b676ed4',
)
self.assertEqual(len(items), 0)
# Add an item into the database.
item = models.ExampleItem()
item.name = 'Example'
item.enabled = True
item.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item,
)
# Evaluate the observer again (in reality this would be done automatically, triggered by signals
# from Django ORM).
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 1)
expected_serialized_item = {
'id': item.pk,
'name': item.name,
'enabled': item.enabled,
}
self.assertEqual(added[0]['data'], expected_serialized_item)
self.assertEqual(len(changed), 0)
self.assertEqual(len(removed), 0)
# Change the existing item.
item.enabled = False
expected_serialized_item['enabled'] = False
item.save()
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 0)
self.assertEqual(len(changed), 1)
self.assertEqual(changed[0]['data'], expected_serialized_item)
self.assertEqual(len(removed), 0)
# Remove the first item.
item.delete()
# Add another two items.
item2 = models.ExampleItem()
item2.name = 'Example 2'
item2.enabled = True
item2.save()
item3 = models.ExampleItem()
item3.name = 'Example 3'
item3.enabled = True
item3.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item2,
)
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item3,
)
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 2)
self.assertEqual(
added[0]['data'],
{
'id': item2.pk,
'name': item2.name,
'enabled': item2.enabled
},
)
self.assertEqual(
added[1]['data'],
{
'id': item3.pk,
'name': item3.name,
'enabled': item3.enabled
},
)
self.assertEqual(len(changed), 0)
self.assertEqual(len(removed), 1)
self.assertEqual(removed[0]['data'], expected_serialized_item)
def test_order(self):
observer = QueryObserver(
request(views.ExampleItemViewSet, ordering='name'))
items = observer.subscribe('test-session')
self.assertEqual(len(items), 0)
item = models.ExampleItem()
item.name = 'D'
item.enabled = False
item.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item,
)
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 1)
self.assertEqual(
added[0]['data'],
{
'id': item.pk,
'name': item.name,
'enabled': item.enabled
},
)
self.assertEqual(added[0]['order'], 0)
self.assertEqual(len(changed), 0)
self.assertEqual(len(removed), 0)
item2 = models.ExampleItem()
item2.name = 'A'
item2.enabled = True
item2.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item2,
)
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 1)
self.assertEqual(
added[0]['data'],
{
'id': item2.pk,
'name': item2.name,
'enabled': item2.enabled
},
)
self.assertEqual(added[0]['order'], 0)
# Check that the first item has changed, because its order has changed.
self.assertEqual(len(changed), 1)
self.assertEqual(
changed[0]['data'],
{
'id': item.pk,
'name': item.name,
'enabled': item.enabled
},
)
self.assertEqual(changed[0]['order'], 1)
self.assertEqual(len(removed), 0)
item3 = models.ExampleItem()
item3.name = 'C'
item3.enabled = True
item3.save()
shortcuts.assign_perm(
'rest_framework_reactive.view_exampleitem',
auth_models.AnonymousUser(),
item3,
)
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 1)
self.assertEqual(
added[0]['data'],
{
'id': item3.pk,
'name': item3.name,
'enabled': item3.enabled
},
)
self.assertEqual(added[0]['order'], 1)
self.assertEqual(len(changed), 1)
self.assertEqual(
changed[0]['data'],
{
'id': item.pk,
'name': item.name,
'enabled': item.enabled
},
)
self.assertEqual(changed[0]['order'], 2)
self.assertEqual(len(removed), 0)
# Check order change between two existing items.
item.name = 'B'
item.save()
added, changed, removed = observer._evaluate()
self.assertEqual(len(added), 0)
self.assertEqual(len(changed), 2)
self.assertEqual(
changed[0]['data'],
{
'id': item3.pk,
'name': item3.name,
'enabled': item3.enabled
},
)
self.assertEqual(changed[0]['order'], 2)
self.assertEqual(
changed[1]['data'],
{
'id': item.pk,
'name': item.name,
'enabled': item.enabled
},
)
self.assertEqual(changed[1]['order'], 1)
self.assertEqual(len(removed), 0)