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from __future__ import unicode_literals
from django.db import models
from django.test import TestCase
from rest_framework import generics, serializers, status
from rest_framework.tests.utils import RequestFactory
import json
factory = RequestFactory()
# Regression for #666
class ValidationModel(models.Model):
blank_validated_field = models.CharField(max_length=255)
class ValidationModelSerializer(serializers.ModelSerializer):
class Meta:
model = ValidationModel
fields = ('blank_validated_field',)
read_only_fields = ('blank_validated_field',)
class UpdateValidationModel(generics.RetrieveUpdateDestroyAPIView):
model = ValidationModel
serializer_class = ValidationModelSerializer
class TestPreSaveValidationExclusions(TestCase):
def test_pre_save_validation_exclusions(self):
"""
Somewhat weird test case to ensure that we don't perform model
validation on read only fields.
"""
obj = ValidationModel.objects.create(blank_validated_field='')
request = factory.put('/', json.dumps({}),
content_type='application/json')
view = UpdateValidationModel().as_view()
response = view(request, pk=obj.pk).render()
self.assertEqual(response.status_code, status.HTTP_200_OK)
# Regression for #653
class ShouldValidateModel(models.Model):
should_validate_field = models.CharField(max_length=255)
class ShouldValidateModelSerializer(serializers.ModelSerializer):
renamed = serializers.CharField(source='should_validate_field', required=False)
class Meta:
model = ShouldValidateModel
fields = ('renamed',)
class TestPreSaveValidationExclusions(TestCase):
def test_renamed_fields_are_model_validated(self):
"""
Ensure fields with 'source' applied do get still get model validation.
"""
# We've set `required=False` on the serializer, but the model
# does not have `blank=True`, so this serializer should not validate.
serializer = ShouldValidateModelSerializer(data={'renamed': ''})
self.assertEqual(serializer.is_valid(), False)
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