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"""
General serializer field tests.
"""
from django.db import models
from django.test import TestCase
from rest_framework import serializers
class TimestampedModel(models.Model):
added = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
class CharPrimaryKeyModel(models.Model):
id = models.CharField(max_length=20, primary_key=True)
class TimestampedModelSerializer(serializers.ModelSerializer):
class Meta:
model = TimestampedModel
class CharPrimaryKeyModelSerializer(serializers.ModelSerializer):
class Meta:
model = CharPrimaryKeyModel
class ReadOnlyFieldTests(TestCase):
def test_auto_now_fields_read_only(self):
"""
auto_now and auto_now_add fields should be read_only by default.
"""
serializer = TimestampedModelSerializer()
self.assertEquals(serializer.fields['added'].read_only, True)
def test_auto_pk_fields_read_only(self):
"""
AutoField fields should be read_only by default.
"""
serializer = TimestampedModelSerializer()
self.assertEquals(serializer.fields['id'].read_only, True)
def test_non_auto_pk_fields_not_read_only(self):
"""
PK fields other than AutoField fields should not be read_only by default.
"""
serializer = CharPrimaryKeyModelSerializer()
self.assertEquals(serializer.fields['id'].read_only, False)
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