Simple django mocking test example 1

models.py

from django.db import models

class SampleManager(models.Manager):

    def get_by_user(self, user):
        self.filter(user=user)

class Sample(models.Model):
    pass

tests.py

import unittest
import mock
from django_testing import models

class SampleTests(unittest.TestCase):

    def test_filters_by_user(self):
        user = mock.Mock()
        manager = mock.Mock(spec=models.SampleManager)
        models.SampleManager.get_by_user(manager, user)
        manager.filter.assert_called_with(user=user)