def test_cqrs_saves_count_lifecycle():
instance = models.TrackedFieldsParentModel(char_field='1')
instance.reset_cqrs_saves_count()
assert instance.cqrs_saves_count == 0
assert instance.is_initial_cqrs_save
instance.save()
assert instance.cqrs_saves_count == 0
assert instance.is_initial_cqrs_save
instance.save()
assert instance.cqrs_saves_count == 0
assert instance.is_initial_cqrs_save
instance.refresh_from_db()
assert instance.cqrs_saves_count == 0
assert instance.is_initial_cqrs_save
with transaction.atomic():
instance.save()
assert instance.cqrs_saves_count == 1
assert instance.is_initial_cqrs_save
instance.save()
assert instance.cqrs_saves_count == 2
assert not instance.is_initial_cqrs_save
instance.refresh_from_db()
assert instance.cqrs_saves_count == 2
assert not instance.is_initial_cqrs_save
same_db_object_other_instance = models.TrackedFieldsParentModel.objects.first(
)
assert same_db_object_other_instance.pk == instance.pk
assert same_db_object_other_instance.cqrs_saves_count == 0
assert same_db_object_other_instance.is_initial_cqrs_save
same_db_object_other_instance.save()
assert same_db_object_other_instance.cqrs_saves_count == 1
assert same_db_object_other_instance.is_initial_cqrs_save
same_db_object_other_instance.reset_cqrs_saves_count()
assert same_db_object_other_instance.cqrs_saves_count == 0
assert same_db_object_other_instance.is_initial_cqrs_save
same_db_object_other_instance.save()
assert same_db_object_other_instance.cqrs_saves_count == 1
assert same_db_object_other_instance.is_initial_cqrs_save
assert instance.cqrs_saves_count == 0
assert same_db_object_other_instance.cqrs_saves_count == 0
def test_cqrs_tracked_fields_tracking(mocker):
publisher_mock = mocker.patch('dj_cqrs.controller.producer.produce')
instance = models.TrackedFieldsParentModel()
instance.char_field = 'Value'
instance.save()
tracked_data = instance.get_tracked_fields_data()
assert publisher_mock.call_args[0][0].previous_data == tracked_data
assert tracked_data is not None
assert 'char_field' in tracked_data
assert tracked_data['char_field'] is None
instance.char_field = 'New Value'
instance.save()
tracked_data = instance.get_tracked_fields_data()
assert 'char_field' in tracked_data
assert tracked_data['char_field'] == 'Value'
assert publisher_mock.call_args[0][0].previous_data == tracked_data
def test_transaction_instance_saved_once_simple_case(mocker):
publisher_mock = mocker.patch('dj_cqrs.controller.producer.produce')
i0 = models.TrackedFieldsChildModel.objects.create(char_field='old')
with transaction.atomic():
i1 = models.TrackedFieldsParentModel.objects.create(char_field='1')
i1.char_field = '2'
i1.save()
i2 = models.TrackedFieldsParentModel(char_field='a')
i2.save()
i3 = models.TrackedFieldsChildModel.objects.create(char_field='.')
i0.char_field = 'new'
i0.save()
assert publisher_mock.call_count == 5
for i in [i0, i1, i2, i3]:
i.refresh_from_db()
assert i0.cqrs_revision == 1
assert i1.cqrs_revision == 0
assert i2.cqrs_revision == 0
assert i3.cqrs_revision == 0
mapper = (
(i0.pk, 0, 'old', None),
(i1.pk, 0, '2', '1'),
(i2.pk, 0, 'a', None),
(i3.pk, 0, '.', None),
(i0.pk, 1, 'new', 'old'),
)
for index, call in enumerate(publisher_mock.call_args_list):
payload = call[0][0]
expected_data = mapper[index]
assert payload.pk == expected_data[0]
assert payload.instance_data['cqrs_revision'] == expected_data[1]
assert payload.instance_data['char_field'] == expected_data[2]
assert payload.previous_data['char_field'] == expected_data[3]