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Code Issues 25 Releases Wiki Activity
c5a76a3669
django/tests/regressiontests/serializers_regress/tests.py
Russell Keith-Magee 12716794db Fixed #7350, #7202 -- Fixed serialization for multi-model inheritance, which had multiple problems: 
* Serializers were including all superclass fields in their output. Now only local fields are included.
 * Implicit OneToOne primary keys were not correctly added to the metamodel, so they were always marked to be serialized, even though they were primary
 * Model saving was too aggressive about creating new parent class instances during deserialization. Raw save on a model now skips saving of the parent class.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7600 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-06-09 14:03:35 +00:00

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"""
A test spanning all the capabilities of all the serializers.
This class defines sample data and a dynamically generated
test case that is capable of testing the capabilities of
the serializers. This includes all valid data values, plus
forward, backwards and self references.
"""
import unittest, datetime
from cStringIO import StringIO
from django.utils.functional import curry
from django.core import serializers
from django.db import transaction
from django.core import management
from django.conf import settings
from models import *
try:
import decimal
except ImportError:
from django.utils import _decimal as decimal
# A set of functions that can be used to recreate
# test data objects of various kinds.
# The save method is a raw base model save, to make
# sure that the data in the database matches the
# exact test case.
def data_create(pk, klass, data):
instance = klass(id=pk)
instance.data = data
models.Model.save_base(instance, raw=True)
return [instance]
def generic_create(pk, klass, data):
instance = klass(id=pk)
instance.data = data[0]
models.Model.save_base(instance, raw=True)
for tag in data[1:]:
instance.tags.create(data=tag)
return [instance]
def fk_create(pk, klass, data):
instance = klass(id=pk)
setattr(instance, 'data_id', data)
models.Model.save_base(instance, raw=True)
return [instance]
def m2m_create(pk, klass, data):
instance = klass(id=pk)
models.Model.save_base(instance, raw=True)
instance.data = data
return [instance]
def o2o_create(pk, klass, data):
instance = klass()
instance.data_id = data
models.Model.save_base(instance, raw=True)
return [instance]
def pk_create(pk, klass, data):
instance = klass()
instance.data = data
models.Model.save_base(instance, raw=True)
return [instance]
def inherited_create(pk, klass, data):
instance = klass(id=pk,**data)
# This isn't a raw save because:
# 1) we're testing inheritance, not field behaviour, so none
# of the field values need to be protected.
# 2) saving the child class and having the parent created
# automatically is easier than manually creating both.
models.Model.save(instance)
created = [instance]
for klass,field in instance._meta.parents.items():
created.append(klass.objects.get(id=pk))
return created
# A set of functions that can be used to compare
# test data objects of various kinds
def data_compare(testcase, pk, klass, data):
instance = klass.objects.get(id=pk)
testcase.assertEqual(data, instance.data,
"Objects with PK=%d not equal; expected '%s' (%s), got '%s' (%s)" % (pk,data, type(data), instance.data, type(instance.data)))
def generic_compare(testcase, pk, klass, data):
instance = klass.objects.get(id=pk)
testcase.assertEqual(data[0], instance.data)
testcase.assertEqual(data[1:], [t.data for t in instance.tags.all()])
def fk_compare(testcase, pk, klass, data):
instance = klass.objects.get(id=pk)
testcase.assertEqual(data, instance.data_id)
def m2m_compare(testcase, pk, klass, data):
instance = klass.objects.get(id=pk)
testcase.assertEqual(data, [obj.id for obj in instance.data.all()])
def o2o_compare(testcase, pk, klass, data):
instance = klass.objects.get(data=data)
testcase.assertEqual(data, instance.data_id)
def pk_compare(testcase, pk, klass, data):
instance = klass.objects.get(data=data)
testcase.assertEqual(data, instance.data)
def inherited_compare(testcase, pk, klass, data):
instance = klass.objects.get(id=pk)
for key,value in data.items():
testcase.assertEqual(value, getattr(instance,key))
# Define some data types. Each data type is
# actually a pair of functions; one to create
# and one to compare objects of that type
data_obj = (data_create, data_compare)
generic_obj = (generic_create, generic_compare)
fk_obj = (fk_create, fk_compare)
m2m_obj = (m2m_create, m2m_compare)
o2o_obj = (o2o_create, o2o_compare)
pk_obj = (pk_create, pk_compare)
inherited_obj = (inherited_create, inherited_compare)
test_data = [
# Format: (data type, PK value, Model Class, data)
(data_obj, 1, BooleanData, True),
(data_obj, 2, BooleanData, False),
(data_obj, 10, CharData, "Test Char Data"),
(data_obj, 11, CharData, ""),
(data_obj, 12, CharData, "None"),
(data_obj, 13, CharData, "null"),
(data_obj, 14, CharData, "NULL"),
(data_obj, 15, CharData, None),
# (We use something that will fit into a latin1 database encoding here,
# because that is still the default used on many system setups.)
(data_obj, 16, CharData, u'\xa5'),
(data_obj, 20, DateData, datetime.date(2006,6,16)),
(data_obj, 21, DateData, None),
(data_obj, 30, DateTimeData, datetime.datetime(2006,6,16,10,42,37)),
(data_obj, 31, DateTimeData, None),
(data_obj, 40, EmailData, "hovercraft@example.com"),
(data_obj, 41, EmailData, None),
(data_obj, 42, EmailData, ""),
(data_obj, 50, FileData, 'file:///foo/bar/whiz.txt'),
(data_obj, 51, FileData, None),
(data_obj, 52, FileData, ""),
(data_obj, 60, FilePathData, "/foo/bar/whiz.txt"),
(data_obj, 61, FilePathData, None),
(data_obj, 62, FilePathData, ""),
(data_obj, 70, DecimalData, decimal.Decimal('12.345')),
(data_obj, 71, DecimalData, decimal.Decimal('-12.345')),
(data_obj, 72, DecimalData, decimal.Decimal('0.0')),
(data_obj, 73, DecimalData, None),
(data_obj, 74, FloatData, 12.345),
(data_obj, 75, FloatData, -12.345),
(data_obj, 76, FloatData, 0.0),
(data_obj, 77, FloatData, None),
(data_obj, 80, IntegerData, 123456789),
(data_obj, 81, IntegerData, -123456789),
(data_obj, 82, IntegerData, 0),
(data_obj, 83, IntegerData, None),
#(XX, ImageData
(data_obj, 90, IPAddressData, "127.0.0.1"),
(data_obj, 91, IPAddressData, None),
(data_obj, 100, NullBooleanData, True),
(data_obj, 101, NullBooleanData, False),
(data_obj, 102, NullBooleanData, None),
(data_obj, 110, PhoneData, "212-634-5789"),
(data_obj, 111, PhoneData, None),
(data_obj, 120, PositiveIntegerData, 123456789),
(data_obj, 121, PositiveIntegerData, None),
(data_obj, 130, PositiveSmallIntegerData, 12),
(data_obj, 131, PositiveSmallIntegerData, None),
(data_obj, 140, SlugData, "this-is-a-slug"),
(data_obj, 141, SlugData, None),
(data_obj, 142, SlugData, ""),
(data_obj, 150, SmallData, 12),
(data_obj, 151, SmallData, -12),
(data_obj, 152, SmallData, 0),
(data_obj, 153, SmallData, None),
(data_obj, 160, TextData, """This is a long piece of text.
It contains line breaks.
Several of them.
The end."""),
(data_obj, 161, TextData, ""),
(data_obj, 162, TextData, None),
(data_obj, 170, TimeData, datetime.time(10,42,37)),
(data_obj, 171, TimeData, None),
(data_obj, 180, USStateData, "MA"),
(data_obj, 181, USStateData, None),
(data_obj, 182, USStateData, ""),
(data_obj, 190, XMLData, "<foo></foo>"),
(data_obj, 191, XMLData, None),
(data_obj, 192, XMLData, ""),
(generic_obj, 200, GenericData, ['Generic Object 1', 'tag1', 'tag2']),
(generic_obj, 201, GenericData, ['Generic Object 2', 'tag2', 'tag3']),
(data_obj, 300, Anchor, "Anchor 1"),
(data_obj, 301, Anchor, "Anchor 2"),
(data_obj, 302, UniqueAnchor, "UAnchor 1"),
(fk_obj, 400, FKData, 300), # Post reference
(fk_obj, 401, FKData, 500), # Pre reference
(fk_obj, 402, FKData, None), # Empty reference
(m2m_obj, 410, M2MData, []), # Empty set
(m2m_obj, 411, M2MData, [300,301]), # Post reference
(m2m_obj, 412, M2MData, [500,501]), # Pre reference
(m2m_obj, 413, M2MData, [300,301,500,501]), # Pre and Post reference
(o2o_obj, None, O2OData, 300), # Post reference
(o2o_obj, None, O2OData, 500), # Pre reference
(fk_obj, 430, FKSelfData, 431), # Pre reference
(fk_obj, 431, FKSelfData, 430), # Post reference
(fk_obj, 432, FKSelfData, None), # Empty reference
(m2m_obj, 440, M2MSelfData, []),
(m2m_obj, 441, M2MSelfData, []),
(m2m_obj, 442, M2MSelfData, [440, 441]),
(m2m_obj, 443, M2MSelfData, [445, 446]),
(m2m_obj, 444, M2MSelfData, [440, 441, 445, 446]),
(m2m_obj, 445, M2MSelfData, []),
(m2m_obj, 446, M2MSelfData, []),
(fk_obj, 450, FKDataToField, "UAnchor 1"),
(fk_obj, 451, FKDataToField, "UAnchor 2"),
(fk_obj, 452, FKDataToField, None),
(fk_obj, 460, FKDataToO2O, 300),
(data_obj, 500, Anchor, "Anchor 3"),
(data_obj, 501, Anchor, "Anchor 4"),
(data_obj, 502, UniqueAnchor, "UAnchor 2"),
(pk_obj, 601, BooleanPKData, True),
(pk_obj, 602, BooleanPKData, False),
(pk_obj, 610, CharPKData, "Test Char PKData"),
# (pk_obj, 620, DatePKData, datetime.date(2006,6,16)),
# (pk_obj, 630, DateTimePKData, datetime.datetime(2006,6,16,10,42,37)),
(pk_obj, 640, EmailPKData, "hovercraft@example.com"),
(pk_obj, 650, FilePKData, 'file:///foo/bar/whiz.txt'),
(pk_obj, 660, FilePathPKData, "/foo/bar/whiz.txt"),
(pk_obj, 670, DecimalPKData, decimal.Decimal('12.345')),
(pk_obj, 671, DecimalPKData, decimal.Decimal('-12.345')),
(pk_obj, 672, DecimalPKData, decimal.Decimal('0.0')),
(pk_obj, 673, FloatPKData, 12.345),
(pk_obj, 674, FloatPKData, -12.345),
(pk_obj, 675, FloatPKData, 0.0),
(pk_obj, 680, IntegerPKData, 123456789),
(pk_obj, 681, IntegerPKData, -123456789),
(pk_obj, 682, IntegerPKData, 0),
# (XX, ImagePKData
(pk_obj, 690, IPAddressPKData, "127.0.0.1"),
# (pk_obj, 700, NullBooleanPKData, True),
# (pk_obj, 701, NullBooleanPKData, False),
(pk_obj, 710, PhonePKData, "212-634-5789"),
(pk_obj, 720, PositiveIntegerPKData, 123456789),
(pk_obj, 730, PositiveSmallIntegerPKData, 12),
(pk_obj, 740, SlugPKData, "this-is-a-slug"),
(pk_obj, 750, SmallPKData, 12),
(pk_obj, 751, SmallPKData, -12),
(pk_obj, 752, SmallPKData, 0),
# (pk_obj, 760, TextPKData, """This is a long piece of text.
# It contains line breaks.
# Several of them.
# The end."""),
# (pk_obj, 770, TimePKData, datetime.time(10,42,37)),
(pk_obj, 780, USStatePKData, "MA"),
# (pk_obj, 790, XMLPKData, "<foo></foo>"),
(data_obj, 800, AutoNowDateTimeData, datetime.datetime(2006,6,16,10,42,37)),
(data_obj, 810, ModifyingSaveData, 42),
(inherited_obj, 900, InheritAbstractModel, {'child_data':37,'parent_data':42}),
(inherited_obj, 910, ExplicitInheritBaseModel, {'child_data':37,'parent_data':42}),
(inherited_obj, 920, InheritBaseModel, {'child_data':37,'parent_data':42}),
]
# Because Oracle treats the empty string as NULL, Oracle is expected to fail
# when field.empty_strings_allowed is True and the value is None; skip these
# tests.
if settings.DATABASE_ENGINE == 'oracle':
test_data = [data for data in test_data
if not (data[0] == data_obj and
data[2]._meta.get_field('data').empty_strings_allowed and
data[3] is None)]
# Dynamically create serializer tests to ensure that all
# registered serializers are automatically tested.
class SerializerTests(unittest.TestCase):
pass
def serializerTest(format, self):
# Clear the database first
management.call_command('flush', verbosity=0, interactive=False)
# Create all the objects defined in the test data
objects = []
instance_count = {}
transaction.enter_transaction_management()
transaction.managed(True)
for (func, pk, klass, datum) in test_data:
objects.extend(func[0](pk, klass, datum))
instance_count[klass] = 0
transaction.commit()
transaction.leave_transaction_management()
# Get a count of the number of objects created for each class
for klass in instance_count:
instance_count[klass] = klass.objects.count()
# Add the generic tagged objects to the object list
objects.extend(Tag.objects.all())
# Serialize the test database
serialized_data = serializers.serialize(format, objects, indent=2)
# Flush the database and recreate from the serialized data
management.call_command('flush', verbosity=0, interactive=False)
transaction.enter_transaction_management()
transaction.managed(True)
for obj in serializers.deserialize(format, serialized_data):
obj.save()
transaction.commit()
transaction.leave_transaction_management()
# Assert that the deserialized data is the same
# as the original source
for (func, pk, klass, datum) in test_data:
func[1](self, pk, klass, datum)
# Assert that the number of objects deserialized is the
# same as the number that was serialized.
for klass, count in instance_count.items():
self.assertEquals(count, klass.objects.count())
def fieldsTest(format, self):
# Clear the database first
management.call_command('flush', verbosity=0, interactive=False)
obj = ComplexModel(field1='first',field2='second',field3='third')
obj.save_base(raw=True)
# Serialize then deserialize the test database
serialized_data = serializers.serialize(format, [obj], indent=2, fields=('field1','field3'))
result = serializers.deserialize(format, serialized_data).next()
# Check that the deserialized object contains data in only the serialized fields.
self.assertEqual(result.object.field1, 'first')
self.assertEqual(result.object.field2, '')
self.assertEqual(result.object.field3, 'third')
def streamTest(format, self):
# Clear the database first
management.call_command('flush', verbosity=0, interactive=False)
obj = ComplexModel(field1='first',field2='second',field3='third')
obj.save_base(raw=True)
# Serialize the test database to a stream
stream = StringIO()
serializers.serialize(format, [obj], indent=2, stream=stream)
# Serialize normally for a comparison
string_data = serializers.serialize(format, [obj], indent=2)
# Check that the two are the same
self.assertEqual(string_data, stream.getvalue())
stream.close()
for format in serializers.get_serializer_formats():
setattr(SerializerTests, 'test_'+format+'_serializer', curry(serializerTest, format))
setattr(SerializerTests, 'test_'+format+'_serializer_fields', curry(fieldsTest, format))
if format != 'python':
setattr(SerializerTests, 'test_'+format+'_serializer_stream', curry(streamTest, format))
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