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import datetime
from django.test import TestCase
from djangorestframework import serializers
class Comment(object):
def __init__(self, email, content, created):
self.email = email
self.content = content
self.created = created or datetime.datetime.now()
def __eq__(self, other):
return all([getattr(self, attr) == getattr(other, attr)
for attr in ('email', 'content', 'created')])
class CommentSerializer(serializers.Serializer):
email = serializers.EmailField()
content = serializers.CharField(max_length=1000)
created = serializers.DateTimeField()
def restore_object(self, data, instance=None):
if instance is None:
return Comment(**data)
for key, val in data.items():
setattr(instance, key, val)
return instance
class BasicTests(TestCase):
def setUp(self):
self.comment = Comment(
'tom@example.com',
'Happy new year!',
datetime.datetime(2012, 1, 1)
)
self.data = {
'email': 'tom@example.com',
'content': 'Happy new year!',
'created': datetime.datetime(2012, 1, 1)
}
def test_empty(self):
serializer = CommentSerializer()
expected = {
'email': '',
'content': '',
'created': None
}
self.assertEquals(serializer.data, expected)
def test_serialization(self):
serializer = CommentSerializer(instance=self.comment)
expected = self.data
self.assertEquals(serializer.data, expected)
def test_deserialization_for_create(self):
serializer = CommentSerializer(self.data)
expected = self.comment
self.assertEquals(serializer.is_valid(), True)
self.assertEquals(serializer.object, expected)
self.assertFalse(serializer.object is expected)
def test_deserialization_for_update(self):
serializer = CommentSerializer(self.data, instance=self.comment)
expected = self.comment
self.assertEquals(serializer.is_valid(), True)
self.assertEquals(serializer.object, expected)
self.assertTrue(serializer.object is expected)
class ValidationTests(TestCase):
def setUp(self):
self.comment = Comment(
'tom@example.com',
'Happy new year!',
datetime.datetime(2012, 1, 1)
)
self.data = {
'email': 'tom@example.com',
'content': 'x' * 1001,
'created': datetime.datetime(2012, 1, 1)
}
def test_deserialization_for_create(self):
serializer = CommentSerializer(self.data)
self.assertEquals(serializer.is_valid(), False)
self.assertEquals(serializer.errors, {'content': [u'Ensure this value has at most 1000 characters (it has 1001).']})
def test_deserialization_for_update(self):
serializer = CommentSerializer(self.data, instance=self.comment)
self.assertEquals(serializer.is_valid(), False)
self.assertEquals(serializer.errors, {'content': [u'Ensure this value has at most 1000 characters (it has 1001).']})
class MetadataTests(TestCase):
# def setUp(self):
# self.comment = Comment(
# 'tomchristie',
# 'Happy new year!',
# datetime.datetime(2012, 1, 1)
# )
# self.data = {
# 'email': 'tomchristie',
# 'content': 'Happy new year!',
# 'created': datetime.datetime(2012, 1, 1)
# }
def test_empty(self):
serializer = CommentSerializer()
expected = {
'email': serializers.CharField,
'content': serializers.CharField,
'created': serializers.DateTimeField
}
for field_name, field in expected.items():
self.assertTrue(isinstance(serializer.data.fields[field_name], field))
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