  from django.db import models
  from django.test import TestCase
  from rest_framework import serializers
  
  
  class OneToOneTarget(models.Model):
      name = models.CharField(max_length=100)
  
  
  class OneToOneSource(models.Model):
      name = models.CharField(max_length=100)
      target = models.OneToOneField(OneToOneTarget, related_name='source',
 
</s> remove class FilterableItem(models.Model):
    text = models.CharField(max_length=100)
    decimal = models.DecimalField(max_digits=4, decimal_places=2)
    date = models.DateField()


 </s> add  </s> remove class FilterableItem(models.Model):
    text = models.CharField(max_length=100)
    decimal = models.DecimalField(max_digits=4, decimal_places=2)
    date = models.DateField()


 </s> add  </s> remove         class DVOAFModel(RESTFrameworkModel):
            positive_integer_field = models.PositiveIntegerField(blank=True)
            positive_small_integer_field = models.PositiveSmallIntegerField(blank=True)
            email_field = models.EmailField(blank=True)
            file_field = models.FileField(blank=True)
            image_field = models.ImageField(blank=True)
            slug_field = models.SlugField(blank=True)
            url_field = models.URLField(blank=True)
 </s> add  </s> remove         class AMOAFModel(RESTFrameworkModel):
            char_field = models.CharField(max_length=1024, blank=True)
            comma_separated_integer_field = models.CommaSeparatedIntegerField(max_length=1024, blank=True)
            decimal_field = models.DecimalField(max_digits=64, decimal_places=32, blank=True)
            email_field = models.EmailField(max_length=1024, blank=True)
            file_field = models.FileField(max_length=1024, blank=True)
            image_field = models.ImageField(max_length=1024, blank=True)
            slug_field = models.SlugField(max_length=1024, blank=True)
            url_field = models.URLField(max_length=1024, blank=True)
 </s> add 
from .models import OneToOneTarget
  from django.db import models
  from django.test import TestCase
  from rest_framework import serializers
  
from .models import OneToOneTarget
from .models import OneToOneTarget
from .models import OneToOneTarget
  
  
  class OneToOneSource(models.Model):
      name = models.CharField(max_length=100)
      target = models.OneToOneField(OneToOneTarget, related_name='source',
keep keep keep keep replace replace replace keep keep keep keep keep
 Moved all the reused models to the models files to avoid conflicts with the refactored apps. 
rest_framework/tests/test_relations_nested.py