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"""
General serializer field tests.
"""
from __future__ import unicode_literals
import datetime
from django.db import models
from django.test import TestCase
from django.core import validators
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 TimeFieldModel(models.Model):
clock = models.TimeField()
class TimeFieldModelSerializer(serializers.ModelSerializer):
class Meta:
model = TimeFieldModel
class BasicFieldTests(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.assertEqual(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.assertEqual(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.assertEqual(serializer.fields['id'].read_only, False)
def test_TimeField_from_native(self):
f = serializers.TimeField()
result = f.from_native('12:34:56.987654')
self.assertEqual(datetime.time(12, 34, 56, 987654), result)
def test_TimeField_from_native_datetime_time(self):
"""
Make sure from_native() accepts a datetime.time instance.
"""
f = serializers.TimeField()
result = f.from_native(datetime.time(12, 34, 56))
self.assertEqual(result, datetime.time(12, 34, 56))
def test_TimeField_from_native_empty(self):
f = serializers.TimeField()
result = f.from_native('')
self.assertEqual(result, None)
def test_TimeField_from_native_invalid_time(self):
f = serializers.TimeField()
try:
f.from_native('12:69:12')
except validators.ValidationError as e:
self.assertEqual(e.messages, ["'12:69:12' value has an invalid "
"format. It must be a valid time "
"in the HH:MM[:ss[.uuuuuu]] format."])
else:
self.fail("ValidationError was not properly raised")
def test_TimeFieldModelSerializer(self):
serializer = TimeFieldModelSerializer()
self.assertTrue(isinstance(serializer.fields['clock'], serializers.TimeField))
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