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"""
General tests for relational fields.
"""
from django.db import models
from django.test import TestCase
from rest_framework import serializers
class NullModel(models.Model):
pass
class FieldTests(TestCase):
def test_pk_related_field_with_empty_string(self):
"""
Regression test for #446
https://github.com/tomchristie/django-rest-framework/issues/446
"""
field = serializers.PrimaryKeyRelatedField(queryset=NullModel.objects.all())
self.assertRaises(serializers.ValidationError, field.from_native, '')
self.assertRaises(serializers.ValidationError, field.from_native, [])
def test_hyperlinked_related_field_with_empty_string(self):
field = serializers.HyperlinkedRelatedField(queryset=NullModel.objects.all(), view_name='')
self.assertRaises(serializers.ValidationError, field.from_native, '')
self.assertRaises(serializers.ValidationError, field.from_native, [])
def test_slug_related_field_with_empty_string(self):
field = serializers.SlugRelatedField(queryset=NullModel.objects.all(), slug_field='pk')
self.assertRaises(serializers.ValidationError, field.from_native, '')
self.assertRaises(serializers.ValidationError, field.from_native, [])
class TestManyRelateMixin(TestCase):
def test_missing_many_to_many_related_field(self):
'''
Regression test for #632
https://github.com/tomchristie/django-rest-framework/pull/632
'''
field = serializers.ManyRelatedField(read_only=False)
into = {}
field.field_from_native({}, None, 'field_name', into)
self.assertEqual(into['field_name'], [])
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