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===================
Testing MPTT models
===================
Using testing generators
========================
Using testing generators such as ``model_bakery`` is causing random tree fields values, which can cause unexpected behavior.
To prevent that the ``django-mptt.MPTTModel`` will throw an Exception if made through model_bakery in test environment unless
the ``MPTT_ALLOW_TESTING_GENERATORS`` setting is set to True.
You can set the ``MPTT_ALLOW_TESTING_GENERATORS`` setting to True in your Django testing settings.py file or by the ``@override_settings`` decorator for particular test.
You would probably also have to use recipe and explicitly set the appropriate fields for the model.
.. code-block:: python
from django.test import override_settings
from baker.recipe import Recipe
@override_settings(MPTT_ALLOW_TESTING_GENERATORS=True)
def test_mptt_allow_testing_generators(self):
my_model_recipe = Recipe(MyMPTTModel, lft=None, rght=None)
test_model_instance = my_model_recipe.make()
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