""" 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. """ from __future__ import absolute_import import datetime import decimal from io import BytesIO try: import yaml except ImportError: yaml = None from django.core import serializers from django.core.serializers import SerializerDoesNotExist from django.core.serializers.base import DeserializationError from django.db import connection, models from django.test import TestCase from django.utils.functional import curry from django.utils.unittest import skipUnless from .models import (BooleanData, CharData, DateData, DateTimeData, EmailData, FileData, FilePathData, DecimalData, FloatData, IntegerData, IPAddressData, GenericIPAddressData, NullBooleanData, PhoneData, PositiveIntegerData, PositiveSmallIntegerData, SlugData, SmallData, TextData, TimeData, USStateData, GenericData, Anchor, UniqueAnchor, FKData, M2MData, O2OData, FKSelfData, M2MSelfData, FKDataToField, FKDataToO2O, M2MIntermediateData, Intermediate, BooleanPKData, CharPKData, EmailPKData, FilePathPKData, DecimalPKData, FloatPKData, IntegerPKData, IPAddressPKData, GenericIPAddressPKData, PhonePKData, PositiveIntegerPKData, PositiveSmallIntegerPKData, SlugPKData, SmallPKData, USStatePKData, AutoNowDateTimeData, ModifyingSaveData, InheritAbstractModel, BaseModel, ExplicitInheritBaseModel, InheritBaseModel, ProxyBaseModel, ProxyProxyBaseModel, BigIntegerData, LengthModel, Tag, ComplexModel, NaturalKeyAnchor, FKDataNaturalKey) # 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 im2m_create(pk, klass, data): instance = klass(id=pk) models.Model.save_base(instance, raw=True) return [instance] def im_create(pk, klass, data): instance = klass(id=pk) instance.right_id = data['right'] instance.left_id = data['left'] if 'extra' in data: instance.extra = data['extra'] models.Model.save_base(instance, raw=True) 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 behavior, 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.order_by('id')]) 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.order_by('id')]) def im2m_compare(testcase, pk, klass, data): instance = klass.objects.get(id=pk) #actually nothing else to check, the instance just should exist def im_compare(testcase, pk, klass, data): instance = klass.objects.get(id=pk) testcase.assertEqual(data['left'], instance.left_id) testcase.assertEqual(data['right'], instance.right_id) if 'extra' in data: testcase.assertEqual(data['extra'], instance.extra) else: testcase.assertEqual("doesn't matter", instance.extra) 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) im2m_obj = (im2m_create, im2m_compare) im_obj = (im_create, im_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, 95, GenericIPAddressData, "fe80:1424:2223:6cff:fe8a:2e8a:2151:abcd"), (data_obj, 96, GenericIPAddressData, 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, ""), (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), (im2m_obj, 470, M2MIntermediateData, None), #testing post- and prereferences and extra fields (im_obj, 480, Intermediate, {'right': 300, 'left': 470}), (im_obj, 481, Intermediate, {'right': 300, 'left': 490}), (im_obj, 482, Intermediate, {'right': 500, 'left': 470}), (im_obj, 483, Intermediate, {'right': 500, 'left': 490}), (im_obj, 484, Intermediate, {'right': 300, 'left': 470, 'extra': "extra"}), (im_obj, 485, Intermediate, {'right': 300, 'left': 490, 'extra': "extra"}), (im_obj, 486, Intermediate, {'right': 500, 'left': 470, 'extra': "extra"}), (im_obj, 487, Intermediate, {'right': 500, 'left': 490, 'extra': "extra"}), (im2m_obj, 490, M2MIntermediateData, []), (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, 695, GenericIPAddressPKData, "fe80:1424:2223:6cff:fe8a:2e8a:2151:abcd"), # (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, ""), (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}), (data_obj, 1000, BigIntegerData, 9223372036854775807), (data_obj, 1001, BigIntegerData, -9223372036854775808), (data_obj, 1002, BigIntegerData, 0), (data_obj, 1003, BigIntegerData, None), (data_obj, 1004, LengthModel, 0), (data_obj, 1005, LengthModel, 1), ] natural_key_test_data = [ (data_obj, 1100, NaturalKeyAnchor, "Natural Key Anghor"), (fk_obj, 1101, FKDataNaturalKey, 1100), (fk_obj, 1102, FKDataNaturalKey, None), ] # 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 connection.features.interprets_empty_strings_as_nulls: 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)] # Regression test for #8651 -- a FK to an object iwth PK of 0 # This won't work on MySQL since it won't let you create an object # with a primary key of 0, if connection.features.allows_primary_key_0: test_data.extend([ (data_obj, 0, Anchor, "Anchor 0"), (fk_obj, 465, FKData, 0), ]) # Dynamically create serializer tests to ensure that all # registered serializers are automatically tested. class SerializerTests(TestCase): def test_get_unknown_serializer(self): """ #15889: get_serializer('nonsense') raises a SerializerDoesNotExist """ with self.assertRaises(SerializerDoesNotExist): serializers.get_serializer("nonsense") with self.assertRaises(KeyError): serializers.get_serializer("nonsense") # SerializerDoesNotExist is instantiated with the nonexistent format with self.assertRaises(SerializerDoesNotExist) as cm: serializers.get_serializer("nonsense") self.assertEqual(cm.exception.args, ("nonsense",)) def test_unregister_unkown_serializer(self): with self.assertRaises(SerializerDoesNotExist): serializers.unregister_serializer("nonsense") def test_get_unkown_deserializer(self): with self.assertRaises(SerializerDoesNotExist): serializers.get_deserializer("nonsense") def test_json_deserializer_exception(self): with self.assertRaises(DeserializationError): for obj in serializers.deserialize("json", """[{"pk":1}"""): pass @skipUnless(yaml, "PyYAML not installed") def test_yaml_deserializer_exception(self): with self.assertRaises(DeserializationError): for obj in serializers.deserialize("yaml", "{"): pass def test_serialize_proxy_model(self): BaseModel.objects.create(parent_data=1) base_objects = BaseModel.objects.all() proxy_objects = ProxyBaseModel.objects.all() proxy_proxy_objects = ProxyProxyBaseModel.objects.all() base_data = serializers.serialize("json", base_objects) proxy_data = serializers.serialize("json", proxy_objects) proxy_proxy_data = serializers.serialize("json", proxy_proxy_objects) self.assertEqual(base_data, proxy_data.replace('proxy', '')) self.assertEqual(base_data, proxy_proxy_data.replace('proxy', '')) def serializerTest(format, self): # Create all the objects defined in the test data objects = [] instance_count = {} for (func, pk, klass, datum) in test_data: with connection.constraint_checks_disabled(): objects.extend(func[0](pk, klass, datum)) # 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) for obj in serializers.deserialize(format, serialized_data): obj.save() # 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.assertEqual(count, klass.objects.count()) def naturalKeySerializerTest(format, self): # Create all the objects defined in the test data objects = [] instance_count = {} for (func, pk, klass, datum) in natural_key_test_data: with connection.constraint_checks_disabled(): objects.extend(func[0](pk, klass, datum)) # Get a count of the number of objects created for each class for klass in instance_count: instance_count[klass] = klass.objects.count() # Serialize the test database serialized_data = serializers.serialize(format, objects, indent=2, use_natural_keys=True) for obj in serializers.deserialize(format, serialized_data): obj.save() # Assert that the deserialized data is the same # as the original source for (func, pk, klass, datum) in natural_key_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.assertEqual(count, klass.objects.count()) def fieldsTest(format, self): 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 = next(serializers.deserialize(format, serialized_data)) # 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): obj = ComplexModel(field1='first',field2='second',field3='third') obj.save_base(raw=True) # Serialize the test database to a stream stream = BytesIO() 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 + '_natural_key_serializer', curry(naturalKeySerializerTest, format)) setattr(SerializerTests, 'test_' + format + '_serializer_fields', curry(fieldsTest, format)) if format != 'python': setattr(SerializerTests, 'test_' + format + '_serializer_stream', curry(streamTest, format))