Simple django mocking test example 4 implementation code

models.py

from django.db import models

class SampleManager(models.Manager):

    def get_first(self):
        pass

    def get_last(self):
        pass

    def get_first_and_last(self):
        return self.get_first(), self.get_last()

class Sample(models.Model):
    objects = SampleManager()