mirror of https://github.com/django/django.git
584 lines
20 KiB
Python
584 lines
20 KiB
Python
# -*- coding: utf-8 -*-
|
|
from __future__ import unicode_literals
|
|
|
|
import importlib
|
|
import json
|
|
from datetime import datetime
|
|
import re
|
|
import unittest
|
|
from xml.dom import minidom
|
|
try:
|
|
import yaml
|
|
HAS_YAML = True
|
|
except ImportError:
|
|
HAS_YAML = False
|
|
|
|
|
|
from django.core import management, serializers
|
|
from django.db import transaction, connection
|
|
from django.test import TestCase, TransactionTestCase, override_settings, skipUnlessDBFeature
|
|
from django.test.utils import Approximate
|
|
from django.utils import six
|
|
from django.utils.six import StringIO
|
|
|
|
from .models import (Category, Author, Article, AuthorProfile, Actor, Movie,
|
|
Score, Player, Team)
|
|
|
|
|
|
@override_settings(
|
|
SERIALIZATION_MODULES={
|
|
"json2": "django.core.serializers.json",
|
|
}
|
|
)
|
|
class SerializerRegistrationTests(TestCase):
|
|
def setUp(self):
|
|
self.old_serializers = serializers._serializers
|
|
serializers._serializers = {}
|
|
|
|
def tearDown(self):
|
|
serializers._serializers = self.old_serializers
|
|
|
|
def test_register(self):
|
|
"Registering a new serializer populates the full registry. Refs #14823"
|
|
serializers.register_serializer('json3', 'django.core.serializers.json')
|
|
|
|
public_formats = serializers.get_public_serializer_formats()
|
|
self.assertIn('json3', public_formats)
|
|
self.assertIn('json2', public_formats)
|
|
self.assertIn('xml', public_formats)
|
|
|
|
def test_unregister(self):
|
|
"Unregistering a serializer doesn't cause the registry to be repopulated. Refs #14823"
|
|
serializers.unregister_serializer('xml')
|
|
serializers.register_serializer('json3', 'django.core.serializers.json')
|
|
|
|
public_formats = serializers.get_public_serializer_formats()
|
|
|
|
self.assertNotIn('xml', public_formats)
|
|
self.assertIn('json3', public_formats)
|
|
|
|
def test_builtin_serializers(self):
|
|
"Requesting a list of serializer formats popuates the registry"
|
|
all_formats = set(serializers.get_serializer_formats())
|
|
public_formats = set(serializers.get_public_serializer_formats())
|
|
|
|
self.assertIn('xml', all_formats),
|
|
self.assertIn('xml', public_formats)
|
|
|
|
self.assertIn('json2', all_formats)
|
|
self.assertIn('json2', public_formats)
|
|
|
|
self.assertIn('python', all_formats)
|
|
self.assertNotIn('python', public_formats)
|
|
|
|
|
|
class SerializersTestBase(object):
|
|
@staticmethod
|
|
def _comparison_value(value):
|
|
return value
|
|
|
|
def setUp(self):
|
|
sports = Category.objects.create(name="Sports")
|
|
music = Category.objects.create(name="Music")
|
|
op_ed = Category.objects.create(name="Op-Ed")
|
|
|
|
self.joe = Author.objects.create(name="Joe")
|
|
self.jane = Author.objects.create(name="Jane")
|
|
|
|
self.a1 = Article(
|
|
author=self.jane,
|
|
headline="Poker has no place on ESPN",
|
|
pub_date=datetime(2006, 6, 16, 11, 00)
|
|
)
|
|
self.a1.save()
|
|
self.a1.categories = [sports, op_ed]
|
|
|
|
self.a2 = Article(
|
|
author=self.joe,
|
|
headline="Time to reform copyright",
|
|
pub_date=datetime(2006, 6, 16, 13, 00, 11, 345)
|
|
)
|
|
self.a2.save()
|
|
self.a2.categories = [music, op_ed]
|
|
|
|
def test_serialize(self):
|
|
"""Tests that basic serialization works."""
|
|
serial_str = serializers.serialize(self.serializer_name,
|
|
Article.objects.all())
|
|
self.assertTrue(self._validate_output(serial_str))
|
|
|
|
def test_serializer_roundtrip(self):
|
|
"""Tests that serialized content can be deserialized."""
|
|
serial_str = serializers.serialize(self.serializer_name,
|
|
Article.objects.all())
|
|
models = list(serializers.deserialize(self.serializer_name, serial_str))
|
|
self.assertEqual(len(models), 2)
|
|
|
|
def test_altering_serialized_output(self):
|
|
"""
|
|
Tests the ability to create new objects by
|
|
modifying serialized content.
|
|
"""
|
|
old_headline = "Poker has no place on ESPN"
|
|
new_headline = "Poker has no place on television"
|
|
serial_str = serializers.serialize(self.serializer_name,
|
|
Article.objects.all())
|
|
serial_str = serial_str.replace(old_headline, new_headline)
|
|
models = list(serializers.deserialize(self.serializer_name, serial_str))
|
|
|
|
# Prior to saving, old headline is in place
|
|
self.assertTrue(Article.objects.filter(headline=old_headline))
|
|
self.assertFalse(Article.objects.filter(headline=new_headline))
|
|
|
|
for model in models:
|
|
model.save()
|
|
|
|
# After saving, new headline is in place
|
|
self.assertTrue(Article.objects.filter(headline=new_headline))
|
|
self.assertFalse(Article.objects.filter(headline=old_headline))
|
|
|
|
def test_one_to_one_as_pk(self):
|
|
"""
|
|
Tests that if you use your own primary key field
|
|
(such as a OneToOneField), it doesn't appear in the
|
|
serialized field list - it replaces the pk identifier.
|
|
"""
|
|
profile = AuthorProfile(author=self.joe,
|
|
date_of_birth=datetime(1970, 1, 1))
|
|
profile.save()
|
|
serial_str = serializers.serialize(self.serializer_name,
|
|
AuthorProfile.objects.all())
|
|
self.assertFalse(self._get_field_values(serial_str, 'author'))
|
|
|
|
for obj in serializers.deserialize(self.serializer_name, serial_str):
|
|
self.assertEqual(obj.object.pk, self._comparison_value(self.joe.pk))
|
|
|
|
def test_serialize_field_subset(self):
|
|
"""Tests that output can be restricted to a subset of fields"""
|
|
valid_fields = ('headline', 'pub_date')
|
|
invalid_fields = ("author", "categories")
|
|
serial_str = serializers.serialize(self.serializer_name,
|
|
Article.objects.all(),
|
|
fields=valid_fields)
|
|
for field_name in invalid_fields:
|
|
self.assertFalse(self._get_field_values(serial_str, field_name))
|
|
|
|
for field_name in valid_fields:
|
|
self.assertTrue(self._get_field_values(serial_str, field_name))
|
|
|
|
def test_serialize_unicode(self):
|
|
"""Tests that unicode makes the roundtrip intact"""
|
|
actor_name = "Za\u017c\u00f3\u0142\u0107"
|
|
movie_title = 'G\u0119\u015bl\u0105 ja\u017a\u0144'
|
|
ac = Actor(name=actor_name)
|
|
mv = Movie(title=movie_title, actor=ac)
|
|
ac.save()
|
|
mv.save()
|
|
|
|
serial_str = serializers.serialize(self.serializer_name, [mv])
|
|
self.assertEqual(self._get_field_values(serial_str, "title")[0], movie_title)
|
|
self.assertEqual(self._get_field_values(serial_str, "actor")[0], actor_name)
|
|
|
|
obj_list = list(serializers.deserialize(self.serializer_name, serial_str))
|
|
mv_obj = obj_list[0].object
|
|
self.assertEqual(mv_obj.title, movie_title)
|
|
|
|
def test_serialize_superfluous_queries(self):
|
|
"""Ensure no superfluous queries are made when serializing ForeignKeys
|
|
|
|
#17602
|
|
"""
|
|
ac = Actor(name='Actor name')
|
|
ac.save()
|
|
mv = Movie(title='Movie title', actor_id=ac.pk)
|
|
mv.save()
|
|
|
|
with self.assertNumQueries(0):
|
|
serializers.serialize(self.serializer_name, [mv])
|
|
|
|
def test_serialize_with_null_pk(self):
|
|
"""
|
|
Tests that serialized data with no primary key results
|
|
in a model instance with no id
|
|
"""
|
|
category = Category(name="Reference")
|
|
serial_str = serializers.serialize(self.serializer_name, [category])
|
|
pk_value = self._get_pk_values(serial_str)[0]
|
|
self.assertFalse(pk_value)
|
|
|
|
cat_obj = list(serializers.deserialize(self.serializer_name,
|
|
serial_str))[0].object
|
|
self.assertEqual(cat_obj.id, None)
|
|
|
|
def test_float_serialization(self):
|
|
"""Tests that float values serialize and deserialize intact"""
|
|
sc = Score(score=3.4)
|
|
sc.save()
|
|
serial_str = serializers.serialize(self.serializer_name, [sc])
|
|
deserial_objs = list(serializers.deserialize(self.serializer_name,
|
|
serial_str))
|
|
self.assertEqual(deserial_objs[0].object.score, Approximate(3.4, places=1))
|
|
|
|
def test_custom_field_serialization(self):
|
|
"""Tests that custom fields serialize and deserialize intact"""
|
|
team_str = "Spartak Moskva"
|
|
player = Player()
|
|
player.name = "Soslan Djanaev"
|
|
player.rank = 1
|
|
player.team = Team(team_str)
|
|
player.save()
|
|
serial_str = serializers.serialize(self.serializer_name,
|
|
Player.objects.all())
|
|
team = self._get_field_values(serial_str, "team")
|
|
self.assertTrue(team)
|
|
self.assertEqual(team[0], team_str)
|
|
|
|
deserial_objs = list(serializers.deserialize(self.serializer_name, serial_str))
|
|
self.assertEqual(deserial_objs[0].object.team.to_string(),
|
|
player.team.to_string())
|
|
|
|
def test_pre_1000ad_date(self):
|
|
"""Tests that year values before 1000AD are properly formatted"""
|
|
# Regression for #12524 -- dates before 1000AD get prefixed
|
|
# 0's on the year
|
|
a = Article.objects.create(
|
|
author=self.jane,
|
|
headline="Nobody remembers the early years",
|
|
pub_date=datetime(1, 2, 3, 4, 5, 6))
|
|
|
|
serial_str = serializers.serialize(self.serializer_name, [a])
|
|
date_values = self._get_field_values(serial_str, "pub_date")
|
|
self.assertEqual(date_values[0].replace('T', ' '), "0001-02-03 04:05:06")
|
|
|
|
def test_pkless_serialized_strings(self):
|
|
"""
|
|
Tests that serialized strings without PKs
|
|
can be turned into models
|
|
"""
|
|
deserial_objs = list(serializers.deserialize(self.serializer_name,
|
|
self.pkless_str))
|
|
for obj in deserial_objs:
|
|
self.assertFalse(obj.object.id)
|
|
obj.save()
|
|
self.assertEqual(Category.objects.all().count(), 5)
|
|
|
|
|
|
class SerializersTransactionTestBase(object):
|
|
|
|
available_apps = ['serializers']
|
|
|
|
@skipUnlessDBFeature('supports_forward_references')
|
|
def test_forward_refs(self):
|
|
"""
|
|
Tests that objects ids can be referenced before they are
|
|
defined in the serialization data.
|
|
"""
|
|
# The deserialization process needs to run in a transaction in order
|
|
# to test forward reference handling.
|
|
with transaction.atomic():
|
|
objs = serializers.deserialize(self.serializer_name, self.fwd_ref_str)
|
|
with connection.constraint_checks_disabled():
|
|
for obj in objs:
|
|
obj.save()
|
|
|
|
for model_cls in (Category, Author, Article):
|
|
self.assertEqual(model_cls.objects.all().count(), 1)
|
|
art_obj = Article.objects.all()[0]
|
|
self.assertEqual(art_obj.categories.all().count(), 1)
|
|
self.assertEqual(art_obj.author.name, "Agnes")
|
|
|
|
|
|
class XmlSerializerTestCase(SerializersTestBase, TestCase):
|
|
serializer_name = "xml"
|
|
pkless_str = """<?xml version="1.0" encoding="utf-8"?>
|
|
<django-objects version="1.0">
|
|
<object model="serializers.category">
|
|
<field type="CharField" name="name">Reference</field>
|
|
</object>
|
|
<object model="serializers.category">
|
|
<field type="CharField" name="name">Non-fiction</field>
|
|
</object>
|
|
</django-objects>"""
|
|
|
|
@staticmethod
|
|
def _comparison_value(value):
|
|
# The XML serializer handles everything as strings, so comparisons
|
|
# need to be performed on the stringified value
|
|
return six.text_type(value)
|
|
|
|
@staticmethod
|
|
def _validate_output(serial_str):
|
|
try:
|
|
minidom.parseString(serial_str)
|
|
except Exception:
|
|
return False
|
|
else:
|
|
return True
|
|
|
|
@staticmethod
|
|
def _get_pk_values(serial_str):
|
|
ret_list = []
|
|
dom = minidom.parseString(serial_str)
|
|
fields = dom.getElementsByTagName("object")
|
|
for field in fields:
|
|
ret_list.append(field.getAttribute("pk"))
|
|
return ret_list
|
|
|
|
@staticmethod
|
|
def _get_field_values(serial_str, field_name):
|
|
ret_list = []
|
|
dom = minidom.parseString(serial_str)
|
|
fields = dom.getElementsByTagName("field")
|
|
for field in fields:
|
|
if field.getAttribute("name") == field_name:
|
|
temp = []
|
|
for child in field.childNodes:
|
|
temp.append(child.nodeValue)
|
|
ret_list.append("".join(temp))
|
|
return ret_list
|
|
|
|
|
|
class XmlSerializerTransactionTestCase(SerializersTransactionTestBase, TransactionTestCase):
|
|
serializer_name = "xml"
|
|
fwd_ref_str = """<?xml version="1.0" encoding="utf-8"?>
|
|
<django-objects version="1.0">
|
|
<object pk="1" model="serializers.article">
|
|
<field to="serializers.author" name="author" rel="ManyToOneRel">1</field>
|
|
<field type="CharField" name="headline">Forward references pose no problem</field>
|
|
<field type="DateTimeField" name="pub_date">2006-06-16T15:00:00</field>
|
|
<field to="serializers.category" name="categories" rel="ManyToManyRel">
|
|
<object pk="1"></object>
|
|
</field>
|
|
</object>
|
|
<object pk="1" model="serializers.author">
|
|
<field type="CharField" name="name">Agnes</field>
|
|
</object>
|
|
<object pk="1" model="serializers.category">
|
|
<field type="CharField" name="name">Reference</field></object>
|
|
</django-objects>"""
|
|
|
|
|
|
class JsonSerializerTestCase(SerializersTestBase, TestCase):
|
|
serializer_name = "json"
|
|
pkless_str = """[
|
|
{
|
|
"pk": null,
|
|
"model": "serializers.category",
|
|
"fields": {"name": "Reference"}
|
|
}, {
|
|
"model": "serializers.category",
|
|
"fields": {"name": "Non-fiction"}
|
|
}]"""
|
|
|
|
@staticmethod
|
|
def _validate_output(serial_str):
|
|
try:
|
|
json.loads(serial_str)
|
|
except Exception:
|
|
return False
|
|
else:
|
|
return True
|
|
|
|
@staticmethod
|
|
def _get_pk_values(serial_str):
|
|
ret_list = []
|
|
serial_list = json.loads(serial_str)
|
|
for obj_dict in serial_list:
|
|
ret_list.append(obj_dict["pk"])
|
|
return ret_list
|
|
|
|
@staticmethod
|
|
def _get_field_values(serial_str, field_name):
|
|
ret_list = []
|
|
serial_list = json.loads(serial_str)
|
|
for obj_dict in serial_list:
|
|
if field_name in obj_dict["fields"]:
|
|
ret_list.append(obj_dict["fields"][field_name])
|
|
return ret_list
|
|
|
|
def test_indentation_whitespace(self):
|
|
Score.objects.create(score=5.0)
|
|
Score.objects.create(score=6.0)
|
|
qset = Score.objects.all()
|
|
|
|
s = serializers.json.Serializer()
|
|
json_data = s.serialize(qset, indent=2)
|
|
for line in json_data.splitlines():
|
|
if re.search(r'.+,\s*$', line):
|
|
self.assertEqual(line, line.rstrip())
|
|
|
|
|
|
class JsonSerializerTransactionTestCase(SerializersTransactionTestBase, TransactionTestCase):
|
|
serializer_name = "json"
|
|
fwd_ref_str = """[
|
|
{
|
|
"pk": 1,
|
|
"model": "serializers.article",
|
|
"fields": {
|
|
"headline": "Forward references pose no problem",
|
|
"pub_date": "2006-06-16T15:00:00",
|
|
"categories": [1],
|
|
"author": 1
|
|
}
|
|
},
|
|
{
|
|
"pk": 1,
|
|
"model": "serializers.category",
|
|
"fields": {
|
|
"name": "Reference"
|
|
}
|
|
},
|
|
{
|
|
"pk": 1,
|
|
"model": "serializers.author",
|
|
"fields": {
|
|
"name": "Agnes"
|
|
}
|
|
}]"""
|
|
|
|
|
|
YAML_IMPORT_ERROR_MESSAGE = r'No module named yaml'
|
|
|
|
|
|
class YamlImportModuleMock(object):
|
|
"""Provides a wrapped import_module function to simulate yaml ImportError
|
|
|
|
In order to run tests that verify the behavior of the YAML serializer
|
|
when run on a system that has yaml installed (like the django CI server),
|
|
mock import_module, so that it raises an ImportError when the yaml
|
|
serializer is being imported. The importlib.import_module() call is
|
|
being made in the serializers.register_serializer().
|
|
|
|
Refs: #12756
|
|
"""
|
|
def __init__(self):
|
|
self._import_module = importlib.import_module
|
|
|
|
def import_module(self, module_path):
|
|
if module_path == serializers.BUILTIN_SERIALIZERS['yaml']:
|
|
raise ImportError(YAML_IMPORT_ERROR_MESSAGE)
|
|
|
|
return self._import_module(module_path)
|
|
|
|
|
|
class NoYamlSerializerTestCase(TestCase):
|
|
"""Not having pyyaml installed provides a misleading error
|
|
|
|
Refs: #12756
|
|
"""
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
"""Removes imported yaml and stubs importlib.import_module"""
|
|
super(NoYamlSerializerTestCase, cls).setUpClass()
|
|
|
|
cls._import_module_mock = YamlImportModuleMock()
|
|
importlib.import_module = cls._import_module_mock.import_module
|
|
|
|
# clear out cached serializers to emulate yaml missing
|
|
serializers._serializers = {}
|
|
|
|
@classmethod
|
|
def tearDownClass(cls):
|
|
"""Puts yaml back if necessary"""
|
|
super(NoYamlSerializerTestCase, cls).tearDownClass()
|
|
|
|
importlib.import_module = cls._import_module_mock._import_module
|
|
|
|
# clear out cached serializers to clean out BadSerializer instances
|
|
serializers._serializers = {}
|
|
|
|
def test_serializer_pyyaml_error_message(self):
|
|
"""Using yaml serializer without pyyaml raises ImportError"""
|
|
jane = Author(name="Jane")
|
|
self.assertRaises(ImportError, serializers.serialize, "yaml", [jane])
|
|
|
|
def test_deserializer_pyyaml_error_message(self):
|
|
"""Using yaml deserializer without pyyaml raises ImportError"""
|
|
self.assertRaises(ImportError, serializers.deserialize, "yaml", "")
|
|
|
|
def test_dumpdata_pyyaml_error_message(self):
|
|
"""Calling dumpdata produces an error when yaml package missing"""
|
|
with six.assertRaisesRegex(self, management.CommandError, YAML_IMPORT_ERROR_MESSAGE):
|
|
management.call_command('dumpdata', format='yaml')
|
|
|
|
|
|
@unittest.skipUnless(HAS_YAML, "No yaml library detected")
|
|
class YamlSerializerTestCase(SerializersTestBase, TestCase):
|
|
serializer_name = "yaml"
|
|
fwd_ref_str = """- fields:
|
|
headline: Forward references pose no problem
|
|
pub_date: 2006-06-16 15:00:00
|
|
categories: [1]
|
|
author: 1
|
|
pk: 1
|
|
model: serializers.article
|
|
- fields:
|
|
name: Reference
|
|
pk: 1
|
|
model: serializers.category
|
|
- fields:
|
|
name: Agnes
|
|
pk: 1
|
|
model: serializers.author"""
|
|
|
|
pkless_str = """- fields:
|
|
name: Reference
|
|
pk: null
|
|
model: serializers.category
|
|
- fields:
|
|
name: Non-fiction
|
|
model: serializers.category"""
|
|
|
|
@staticmethod
|
|
def _validate_output(serial_str):
|
|
try:
|
|
yaml.safe_load(StringIO(serial_str))
|
|
except Exception:
|
|
return False
|
|
else:
|
|
return True
|
|
|
|
@staticmethod
|
|
def _get_pk_values(serial_str):
|
|
ret_list = []
|
|
stream = StringIO(serial_str)
|
|
for obj_dict in yaml.safe_load(stream):
|
|
ret_list.append(obj_dict["pk"])
|
|
return ret_list
|
|
|
|
@staticmethod
|
|
def _get_field_values(serial_str, field_name):
|
|
ret_list = []
|
|
stream = StringIO(serial_str)
|
|
for obj_dict in yaml.safe_load(stream):
|
|
if "fields" in obj_dict and field_name in obj_dict["fields"]:
|
|
field_value = obj_dict["fields"][field_name]
|
|
# yaml.safe_load will return non-string objects for some
|
|
# of the fields we are interested in, this ensures that
|
|
# everything comes back as a string
|
|
if isinstance(field_value, six.string_types):
|
|
ret_list.append(field_value)
|
|
else:
|
|
ret_list.append(str(field_value))
|
|
return ret_list
|
|
|
|
|
|
@unittest.skipUnless(HAS_YAML, "No yaml library detected")
|
|
class YamlSerializerTransactionTestCase(SerializersTransactionTestBase, TransactionTestCase):
|
|
serializer_name = "yaml"
|
|
fwd_ref_str = """- fields:
|
|
headline: Forward references pose no problem
|
|
pub_date: 2006-06-16 15:00:00
|
|
categories: [1]
|
|
author: 1
|
|
pk: 1
|
|
model: serializers.article
|
|
- fields:
|
|
name: Reference
|
|
pk: 1
|
|
model: serializers.category
|
|
- fields:
|
|
name: Agnes
|
|
pk: 1
|
|
model: serializers.author"""
|