# -*- coding: utf-8 -*- from __future__ import unicode_literals from django.db import models from django.db.models.fields import BLANK_CHOICE_DASH from django.test import TestCase from django.utils.datastructures import MultiValueDict from django.utils.translation import ugettext_lazy as _ from rest_framework import serializers, fields, relations from rest_framework.tests.models import (HasPositiveIntegerAsChoice, Album, ActionItem, Anchor, BasicModel, BlankFieldModel, BlogPost, BlogPostComment, Book, CallableDefaultValueModel, DefaultValueModel, ManyToManyModel, Person, ReadOnlyManyToManyModel, Photo, RESTFrameworkModel) from rest_framework.tests.models import BasicModelSerializer import datetime import pickle class SubComment(object): def __init__(self, sub_comment): self.sub_comment = sub_comment 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')]) def get_sub_comment(self): sub_comment = SubComment('And Merry Christmas!') return sub_comment class CommentSerializer(serializers.Serializer): email = serializers.EmailField() content = serializers.CharField(max_length=1000) created = serializers.DateTimeField() sub_comment = serializers.Field(source='get_sub_comment.sub_comment') 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 NamesSerializer(serializers.Serializer): first = serializers.CharField() last = serializers.CharField(required=False, default='') initials = serializers.CharField(required=False, default='') class PersonIdentifierSerializer(serializers.Serializer): ssn = serializers.CharField() names = NamesSerializer(source='names', required=False) class BookSerializer(serializers.ModelSerializer): isbn = serializers.RegexField(regex=r'^[0-9]{13}$', error_messages={'invalid': 'isbn has to be exact 13 numbers'}) class Meta: model = Book class ActionItemSerializer(serializers.ModelSerializer): class Meta: model = ActionItem class ActionItemSerializerCustomRestore(serializers.ModelSerializer): class Meta: model = ActionItem def restore_object(self, data, instance=None): if instance is None: return ActionItem(**data) for key, val in data.items(): setattr(instance, key, val) return instance class PersonSerializer(serializers.ModelSerializer): info = serializers.Field(source='info') class Meta: model = Person fields = ('name', 'age', 'info') read_only_fields = ('age',) class NestedSerializer(serializers.Serializer): info = serializers.Field() class ModelSerializerWithNestedSerializer(serializers.ModelSerializer): nested = NestedSerializer(source='*') class Meta: model = Person class PersonSerializerInvalidReadOnly(serializers.ModelSerializer): """ Testing for #652. """ info = serializers.Field(source='info') class Meta: model = Person fields = ('name', 'age', 'info') read_only_fields = ('age', 'info') class AlbumsSerializer(serializers.ModelSerializer): class Meta: model = Album fields = ['title'] # lists are also valid options class PositiveIntegerAsChoiceSerializer(serializers.ModelSerializer): class Meta: model = HasPositiveIntegerAsChoice fields = ['some_integer'] class BasicTests(TestCase): def setUp(self): self.comment = Comment( 'tom@example.com', 'Happy new year!', datetime.datetime(2012, 1, 1) ) self.actionitem = ActionItem(title='Some to do item',) self.data = { 'email': 'tom@example.com', 'content': 'Happy new year!', 'created': datetime.datetime(2012, 1, 1), 'sub_comment': 'This wont change' } self.expected = { 'email': 'tom@example.com', 'content': 'Happy new year!', 'created': datetime.datetime(2012, 1, 1), 'sub_comment': 'And Merry Christmas!' } self.person_data = {'name': 'dwight', 'age': 35} self.person = Person(**self.person_data) self.person.save() def test_empty(self): serializer = CommentSerializer() expected = { 'email': '', 'content': '', 'created': None } self.assertEqual(serializer.data, expected) def test_retrieve(self): serializer = CommentSerializer(self.comment) self.assertEqual(serializer.data, self.expected) def test_create(self): serializer = CommentSerializer(data=self.data) expected = self.comment self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.object, expected) self.assertFalse(serializer.object is expected) self.assertEqual(serializer.data['sub_comment'], 'And Merry Christmas!') def test_create_nested(self): """Test a serializer with nested data.""" names = {'first': 'John', 'last': 'Doe', 'initials': 'jd'} data = {'ssn': '1234567890', 'names': names} serializer = PersonIdentifierSerializer(data=data) self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.object, data) self.assertFalse(serializer.object is data) self.assertEqual(serializer.data['names'], names) def test_create_partial_nested(self): """Test a serializer with nested data which has missing fields.""" names = {'first': 'John'} data = {'ssn': '1234567890', 'names': names} serializer = PersonIdentifierSerializer(data=data) expected_names = {'first': 'John', 'last': '', 'initials': ''} data['names'] = expected_names self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.object, data) self.assertFalse(serializer.object is expected_names) self.assertEqual(serializer.data['names'], expected_names) def test_null_nested(self): """Test a serializer with a nonexistent nested field""" data = {'ssn': '1234567890'} serializer = PersonIdentifierSerializer(data=data) self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.object, data) self.assertFalse(serializer.object is data) expected = {'ssn': '1234567890', 'names': None} self.assertEqual(serializer.data, expected) def test_update(self): serializer = CommentSerializer(self.comment, data=self.data) expected = self.comment self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.object, expected) self.assertTrue(serializer.object is expected) self.assertEqual(serializer.data['sub_comment'], 'And Merry Christmas!') def test_partial_update(self): msg = 'Merry New Year!' partial_data = {'content': msg} serializer = CommentSerializer(self.comment, data=partial_data) self.assertEqual(serializer.is_valid(), False) serializer = CommentSerializer(self.comment, data=partial_data, partial=True) expected = self.comment self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.object, expected) self.assertTrue(serializer.object is expected) self.assertEqual(serializer.data['content'], msg) def test_model_fields_as_expected(self): """ Make sure that the fields returned are the same as defined in the Meta data """ serializer = PersonSerializer(self.person) self.assertEqual(set(serializer.data.keys()), set(['name', 'age', 'info'])) def test_field_with_dictionary(self): """ Make sure that dictionaries from fields are left intact """ serializer = PersonSerializer(self.person) expected = self.person_data self.assertEqual(serializer.data['info'], expected) def test_read_only_fields(self): """ Attempting to update fields set as read_only should have no effect. """ serializer = PersonSerializer(self.person, data={'name': 'dwight', 'age': 99}) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(serializer.errors, {}) # Assert age is unchanged (35) self.assertEqual(instance.age, self.person_data['age']) def test_invalid_read_only_fields(self): """ Regression test for #652. """ self.assertRaises(AssertionError, PersonSerializerInvalidReadOnly, []) def test_serializer_data_is_cleared_on_save(self): """ Check _data attribute is cleared on `save()` Regression test for #1116 — id field is not populated if `data` is accessed prior to `save()` """ serializer = ActionItemSerializer(self.actionitem) self.assertIsNone(serializer.data.get('id',None), 'New instance. `id` should not be set.') serializer.save() self.assertIsNotNone(serializer.data.get('id',None), 'Model is saved. `id` should be set.') class DictStyleSerializer(serializers.Serializer): """ Note that we don't have any `restore_object` method, so the default case of simply returning a dict will apply. """ email = serializers.EmailField() class DictStyleSerializerTests(TestCase): def test_dict_style_deserialize(self): """ Ensure serializers can deserialize into a dict. """ data = {'email': 'foo@example.com'} serializer = DictStyleSerializer(data=data) self.assertTrue(serializer.is_valid()) self.assertEqual(serializer.data, data) def test_dict_style_serialize(self): """ Ensure serializers can serialize dict objects. """ data = {'email': 'foo@example.com'} serializer = DictStyleSerializer(data) self.assertEqual(serializer.data, data) 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) } self.actionitem = ActionItem(title='Some to do item',) def test_create(self): serializer = CommentSerializer(data=self.data) self.assertEqual(serializer.is_valid(), False) self.assertEqual(serializer.errors, {'content': ['Ensure this value has at most 1000 characters (it has 1001).']}) def test_update(self): serializer = CommentSerializer(self.comment, data=self.data) self.assertEqual(serializer.is_valid(), False) self.assertEqual(serializer.errors, {'content': ['Ensure this value has at most 1000 characters (it has 1001).']}) def test_update_missing_field(self): data = { 'content': 'xxx', 'created': datetime.datetime(2012, 1, 1) } serializer = CommentSerializer(self.comment, data=data) self.assertEqual(serializer.is_valid(), False) self.assertEqual(serializer.errors, {'email': ['This field is required.']}) def test_missing_bool_with_default(self): """Make sure that a boolean value with a 'False' value is not mistaken for not having a default.""" data = { 'title': 'Some action item', #No 'done' value. } serializer = ActionItemSerializer(self.actionitem, data=data) self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.errors, {}) def test_cross_field_validation(self): class CommentSerializerWithCrossFieldValidator(CommentSerializer): def validate(self, attrs): if attrs["email"] not in attrs["content"]: raise serializers.ValidationError("Email address not in content") return attrs data = { 'email': 'tom@example.com', 'content': 'A comment from tom@example.com', 'created': datetime.datetime(2012, 1, 1) } serializer = CommentSerializerWithCrossFieldValidator(data=data) self.assertTrue(serializer.is_valid()) data['content'] = 'A comment from foo@bar.com' serializer = CommentSerializerWithCrossFieldValidator(data=data) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'non_field_errors': ['Email address not in content']}) def test_null_is_true_fields(self): """ Omitting a value for null-field should validate. """ serializer = PersonSerializer(data={'name': 'marko'}) self.assertEqual(serializer.is_valid(), True) self.assertEqual(serializer.errors, {}) def test_modelserializer_max_length_exceeded(self): data = { 'title': 'x' * 201, } serializer = ActionItemSerializer(data=data) self.assertEqual(serializer.is_valid(), False) self.assertEqual(serializer.errors, {'title': ['Ensure this value has at most 200 characters (it has 201).']}) def test_modelserializer_max_length_exceeded_with_custom_restore(self): """ When overriding ModelSerializer.restore_object, validation tests should still apply. Regression test for #623. https://github.com/tomchristie/django-rest-framework/pull/623 """ data = { 'title': 'x' * 201, } serializer = ActionItemSerializerCustomRestore(data=data) self.assertEqual(serializer.is_valid(), False) self.assertEqual(serializer.errors, {'title': ['Ensure this value has at most 200 characters (it has 201).']}) def test_default_modelfield_max_length_exceeded(self): data = { 'title': 'Testing "info" field...', 'info': 'x' * 13, } serializer = ActionItemSerializer(data=data) self.assertEqual(serializer.is_valid(), False) self.assertEqual(serializer.errors, {'info': ['Ensure this value has at most 12 characters (it has 13).']}) def test_datetime_validation_failure(self): """ Test DateTimeField validation errors on non-str values. Regression test for #669. https://github.com/tomchristie/django-rest-framework/issues/669 """ data = self.data data['created'] = 0 serializer = CommentSerializer(data=data) self.assertEqual(serializer.is_valid(), False) self.assertIn('created', serializer.errors) def test_missing_model_field_exception_msg(self): """ Assert that a meaningful exception message is outputted when the model field is missing (e.g. when mistyping ``model``). """ class BrokenModelSerializer(serializers.ModelSerializer): class Meta: fields = ['some_field'] try: BrokenModelSerializer() except AssertionError as e: self.assertEqual(e.args[0], "Serializer class 'BrokenModelSerializer' is missing 'model' Meta option") except: self.fail('Wrong exception type thrown.') def test_writable_star_source_on_nested_serializer(self): """ Assert that a nested serializer instantiated with source='*' correctly expands the data into the outer serializer. """ serializer = ModelSerializerWithNestedSerializer(data={ 'name': 'marko', 'nested': {'info': 'hi'}}, ) self.assertEqual(serializer.is_valid(), True) class CustomValidationTests(TestCase): class CommentSerializerWithFieldValidator(CommentSerializer): def validate_email(self, attrs, source): attrs[source] return attrs def validate_content(self, attrs, source): value = attrs[source] if "test" not in value: raise serializers.ValidationError("Test not in value") return attrs def test_field_validation(self): data = { 'email': 'tom@example.com', 'content': 'A test comment', 'created': datetime.datetime(2012, 1, 1) } serializer = self.CommentSerializerWithFieldValidator(data=data) self.assertTrue(serializer.is_valid()) data['content'] = 'This should not validate' serializer = self.CommentSerializerWithFieldValidator(data=data) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'content': ['Test not in value']}) def test_missing_data(self): """ Make sure that validate_content isn't called if the field is missing """ incomplete_data = { 'email': 'tom@example.com', 'created': datetime.datetime(2012, 1, 1) } serializer = self.CommentSerializerWithFieldValidator(data=incomplete_data) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'content': ['This field is required.']}) def test_wrong_data(self): """ Make sure that validate_content isn't called if the field input is wrong """ wrong_data = { 'email': 'not an email', 'content': 'A test comment', 'created': datetime.datetime(2012, 1, 1) } serializer = self.CommentSerializerWithFieldValidator(data=wrong_data) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'email': ['Enter a valid email address.']}) def test_partial_update(self): """ Make sure that validate_email isn't called when partial=True and email isn't found in data. """ initial_data = { 'email': 'tom@example.com', 'content': 'A test comment', 'created': datetime.datetime(2012, 1, 1) } serializer = self.CommentSerializerWithFieldValidator(data=initial_data) self.assertEqual(serializer.is_valid(), True) instance = serializer.object new_content = 'An *updated* test comment' partial_data = { 'content': new_content } serializer = self.CommentSerializerWithFieldValidator(instance=instance, data=partial_data, partial=True) self.assertEqual(serializer.is_valid(), True) instance = serializer.object self.assertEqual(instance.content, new_content) class PositiveIntegerAsChoiceTests(TestCase): def test_positive_integer_in_json_is_correctly_parsed(self): data = {'some_integer': 1} serializer = PositiveIntegerAsChoiceSerializer(data=data) self.assertEqual(serializer.is_valid(), True) class ModelValidationTests(TestCase): def test_validate_unique(self): """ Just check if serializers.ModelSerializer handles unique checks via .full_clean() """ serializer = AlbumsSerializer(data={'title': 'a'}) serializer.is_valid() serializer.save() second_serializer = AlbumsSerializer(data={'title': 'a'}) self.assertFalse(second_serializer.is_valid()) self.assertEqual(second_serializer.errors, {'title': ['Album with this Title already exists.']}) def test_foreign_key_is_null_with_partial(self): """ Test ModelSerializer validation with partial=True Specifically test that a null foreign key does not pass validation """ album = Album(title='test') album.save() class PhotoSerializer(serializers.ModelSerializer): class Meta: model = Photo photo_serializer = PhotoSerializer(data={'description': 'test', 'album': album.pk}) self.assertTrue(photo_serializer.is_valid()) photo = photo_serializer.save() # Updating only the album (foreign key) photo_serializer = PhotoSerializer(instance=photo, data={'album': ''}, partial=True) self.assertFalse(photo_serializer.is_valid()) self.assertTrue('album' in photo_serializer.errors) self.assertEqual(photo_serializer.errors['album'], photo_serializer.error_messages['required']) def test_foreign_key_with_partial(self): """ Test ModelSerializer validation with partial=True Specifically test foreign key validation. """ album = Album(title='test') album.save() class PhotoSerializer(serializers.ModelSerializer): class Meta: model = Photo photo_serializer = PhotoSerializer(data={'description': 'test', 'album': album.pk}) self.assertTrue(photo_serializer.is_valid()) photo = photo_serializer.save() # Updating only the album (foreign key) photo_serializer = PhotoSerializer(instance=photo, data={'album': album.pk}, partial=True) self.assertTrue(photo_serializer.is_valid()) self.assertTrue(photo_serializer.save()) # Updating only the description photo_serializer = PhotoSerializer(instance=photo, data={'description': 'new'}, partial=True) self.assertTrue(photo_serializer.is_valid()) self.assertTrue(photo_serializer.save()) class RegexValidationTest(TestCase): def test_create_failed(self): serializer = BookSerializer(data={'isbn': '1234567890'}) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'isbn': ['isbn has to be exact 13 numbers']}) serializer = BookSerializer(data={'isbn': '12345678901234'}) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'isbn': ['isbn has to be exact 13 numbers']}) serializer = BookSerializer(data={'isbn': 'abcdefghijklm'}) self.assertFalse(serializer.is_valid()) self.assertEqual(serializer.errors, {'isbn': ['isbn has to be exact 13 numbers']}) def test_create_success(self): serializer = BookSerializer(data={'isbn': '1234567890123'}) self.assertTrue(serializer.is_valid()) class MetadataTests(TestCase): 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)) class ManyToManyTests(TestCase): def setUp(self): class ManyToManySerializer(serializers.ModelSerializer): class Meta: model = ManyToManyModel self.serializer_class = ManyToManySerializer # An anchor instance to use for the relationship self.anchor = Anchor() self.anchor.save() # A model instance with a many to many relationship to the anchor self.instance = ManyToManyModel() self.instance.save() self.instance.rel.add(self.anchor) # A serialized representation of the model instance self.data = {'id': 1, 'rel': [self.anchor.id]} def test_retrieve(self): """ Serialize an instance of a model with a ManyToMany relationship. """ serializer = self.serializer_class(instance=self.instance) expected = self.data self.assertEqual(serializer.data, expected) def test_create(self): """ Create an instance of a model with a ManyToMany relationship. """ data = {'rel': [self.anchor.id]} serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ManyToManyModel.objects.all()), 2) self.assertEqual(instance.pk, 2) self.assertEqual(list(instance.rel.all()), [self.anchor]) def test_update(self): """ Update an instance of a model with a ManyToMany relationship. """ new_anchor = Anchor() new_anchor.save() data = {'rel': [self.anchor.id, new_anchor.id]} serializer = self.serializer_class(self.instance, data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ManyToManyModel.objects.all()), 1) self.assertEqual(instance.pk, 1) self.assertEqual(list(instance.rel.all()), [self.anchor, new_anchor]) def test_create_empty_relationship(self): """ Create an instance of a model with a ManyToMany relationship, containing no items. """ data = {'rel': []} serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ManyToManyModel.objects.all()), 2) self.assertEqual(instance.pk, 2) self.assertEqual(list(instance.rel.all()), []) def test_update_empty_relationship(self): """ Update an instance of a model with a ManyToMany relationship, containing no items. """ new_anchor = Anchor() new_anchor.save() data = {'rel': []} serializer = self.serializer_class(self.instance, data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ManyToManyModel.objects.all()), 1) self.assertEqual(instance.pk, 1) self.assertEqual(list(instance.rel.all()), []) def test_create_empty_relationship_flat_data(self): """ Create an instance of a model with a ManyToMany relationship, containing no items, using a representation that does not support lists (eg form data). """ data = MultiValueDict() data.setlist('rel', ['']) serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ManyToManyModel.objects.all()), 2) self.assertEqual(instance.pk, 2) self.assertEqual(list(instance.rel.all()), []) class ReadOnlyManyToManyTests(TestCase): def setUp(self): class ReadOnlyManyToManySerializer(serializers.ModelSerializer): rel = serializers.RelatedField(many=True, read_only=True) class Meta: model = ReadOnlyManyToManyModel self.serializer_class = ReadOnlyManyToManySerializer # An anchor instance to use for the relationship self.anchor = Anchor() self.anchor.save() # A model instance with a many to many relationship to the anchor self.instance = ReadOnlyManyToManyModel() self.instance.save() self.instance.rel.add(self.anchor) # A serialized representation of the model instance self.data = {'rel': [self.anchor.id], 'id': 1, 'text': 'anchor'} def test_update(self): """ Attempt to update an instance of a model with a ManyToMany relationship. Not updated due to read_only=True """ new_anchor = Anchor() new_anchor.save() data = {'rel': [self.anchor.id, new_anchor.id]} serializer = self.serializer_class(self.instance, data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ReadOnlyManyToManyModel.objects.all()), 1) self.assertEqual(instance.pk, 1) # rel is still as original (1 entry) self.assertEqual(list(instance.rel.all()), [self.anchor]) def test_update_without_relationship(self): """ Attempt to update an instance of a model where many to ManyToMany relationship is not supplied. Not updated due to read_only=True """ new_anchor = Anchor() new_anchor.save() data = {} serializer = self.serializer_class(self.instance, data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(ReadOnlyManyToManyModel.objects.all()), 1) self.assertEqual(instance.pk, 1) # rel is still as original (1 entry) self.assertEqual(list(instance.rel.all()), [self.anchor]) class DefaultValueTests(TestCase): def setUp(self): class DefaultValueSerializer(serializers.ModelSerializer): class Meta: model = DefaultValueModel self.serializer_class = DefaultValueSerializer self.objects = DefaultValueModel.objects def test_create_using_default(self): data = {} serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(self.objects.all()), 1) self.assertEqual(instance.pk, 1) self.assertEqual(instance.text, 'foobar') def test_create_overriding_default(self): data = {'text': 'overridden'} serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(self.objects.all()), 1) self.assertEqual(instance.pk, 1) self.assertEqual(instance.text, 'overridden') def test_partial_update_default(self): """ Regression test for issue #532 """ data = {'text': 'overridden'} serializer = self.serializer_class(data=data, partial=True) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() data = {'extra': 'extra_value'} serializer = self.serializer_class(instance=instance, data=data, partial=True) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(instance.extra, 'extra_value') self.assertEqual(instance.text, 'overridden') class CallableDefaultValueTests(TestCase): def setUp(self): class CallableDefaultValueSerializer(serializers.ModelSerializer): class Meta: model = CallableDefaultValueModel self.serializer_class = CallableDefaultValueSerializer self.objects = CallableDefaultValueModel.objects def test_create_using_default(self): data = {} serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(self.objects.all()), 1) self.assertEqual(instance.pk, 1) self.assertEqual(instance.text, 'foobar') def test_create_overriding_default(self): data = {'text': 'overridden'} serializer = self.serializer_class(data=data) self.assertEqual(serializer.is_valid(), True) instance = serializer.save() self.assertEqual(len(self.objects.all()), 1) self.assertEqual(instance.pk, 1) self.assertEqual(instance.text, 'overridden') class ManyRelatedTests(TestCase): def test_reverse_relations(self): post = BlogPost.objects.create(title="Test blog post") post.blogpostcomment_set.create(text="I hate this blog post") post.blogpostcomment_set.create(text="I love this blog post") class BlogPostCommentSerializer(serializers.Serializer): text = serializers.CharField() class BlogPostSerializer(serializers.Serializer): title = serializers.CharField() comments = BlogPostCommentSerializer(source='blogpostcomment_set') serializer = BlogPostSerializer(instance=post) expected = { 'title': 'Test blog post', 'comments': [ {'text': 'I hate this blog post'}, {'text': 'I love this blog post'} ] } self.assertEqual(serializer.data, expected) def test_include_reverse_relations(self): post = BlogPost.objects.create(title="Test blog post") post.blogpostcomment_set.create(text="I hate this blog post") post.blogpostcomment_set.create(text="I love this blog post") class BlogPostSerializer(serializers.ModelSerializer): class Meta: model = BlogPost fields = ('id', 'title', 'blogpostcomment_set') serializer = BlogPostSerializer(instance=post) expected = { 'id': 1, 'title': 'Test blog post', 'blogpostcomment_set': [1, 2] } self.assertEqual(serializer.data, expected) def test_depth_include_reverse_relations(self): post = BlogPost.objects.create(title="Test blog post") post.blogpostcomment_set.create(text="I hate this blog post") post.blogpostcomment_set.create(text="I love this blog post") class BlogPostSerializer(serializers.ModelSerializer): class Meta: model = BlogPost fields = ('id', 'title', 'blogpostcomment_set') depth = 1 serializer = BlogPostSerializer(instance=post) expected = { 'id': 1, 'title': 'Test blog post', 'blogpostcomment_set': [ {'id': 1, 'text': 'I hate this blog post', 'blog_post': 1}, {'id': 2, 'text': 'I love this blog post', 'blog_post': 1} ] } self.assertEqual(serializer.data, expected) def test_callable_source(self): post = BlogPost.objects.create(title="Test blog post") post.blogpostcomment_set.create(text="I love this blog post") class BlogPostCommentSerializer(serializers.Serializer): text = serializers.CharField() class BlogPostSerializer(serializers.Serializer): title = serializers.CharField() first_comment = BlogPostCommentSerializer(source='get_first_comment') serializer = BlogPostSerializer(post) expected = { 'title': 'Test blog post', 'first_comment': {'text': 'I love this blog post'} } self.assertEqual(serializer.data, expected) class RelatedTraversalTest(TestCase): def test_nested_traversal(self): """ Source argument should support dotted.source notation. """ user = Person.objects.create(name="django") post = BlogPost.objects.create(title="Test blog post", writer=user) post.blogpostcomment_set.create(text="I love this blog post") class PersonSerializer(serializers.ModelSerializer): class Meta: model = Person fields = ("name", "age") class BlogPostCommentSerializer(serializers.ModelSerializer): class Meta: model = BlogPostComment fields = ("text", "post_owner") text = serializers.CharField() post_owner = PersonSerializer(source='blog_post.writer') class BlogPostSerializer(serializers.Serializer): title = serializers.CharField() comments = BlogPostCommentSerializer(source='blogpostcomment_set') serializer = BlogPostSerializer(instance=post) expected = { 'title': 'Test blog post', 'comments': [{ 'text': 'I love this blog post', 'post_owner': { "name": "django", "age": None } }] } self.assertEqual(serializer.data, expected) def test_nested_traversal_with_none(self): """ If a component of the dotted.source is None, return None for the field. """ from rest_framework.tests.models import NullableForeignKeySource instance = NullableForeignKeySource.objects.create(name='Source with null FK') class NullableSourceSerializer(serializers.Serializer): target_name = serializers.Field(source='target.name') serializer = NullableSourceSerializer(instance=instance) expected = { 'target_name': None, } self.assertEqual(serializer.data, expected) class SerializerMethodFieldTests(TestCase): def setUp(self): class BoopSerializer(serializers.Serializer): beep = serializers.SerializerMethodField('get_beep') boop = serializers.Field() boop_count = serializers.SerializerMethodField('get_boop_count') def get_beep(self, obj): return 'hello!' def get_boop_count(self, obj): return len(obj.boop) self.serializer_class = BoopSerializer def test_serializer_method_field(self): class MyModel(object): boop = ['a', 'b', 'c'] source_data = MyModel() serializer = self.serializer_class(source_data) expected = { 'beep': 'hello!', 'boop': ['a', 'b', 'c'], 'boop_count': 3, } self.assertEqual(serializer.data, expected) # Test for issue #324 class BlankFieldTests(TestCase): def setUp(self): class BlankFieldModelSerializer(serializers.ModelSerializer): class Meta: model = BlankFieldModel class BlankFieldSerializer(serializers.Serializer): title = serializers.CharField(required=False) class NotBlankFieldModelSerializer(serializers.ModelSerializer): class Meta: model = BasicModel class NotBlankFieldSerializer(serializers.Serializer): title = serializers.CharField() self.model_serializer_class = BlankFieldModelSerializer self.serializer_class = BlankFieldSerializer self.not_blank_model_serializer_class = NotBlankFieldModelSerializer self.not_blank_serializer_class = NotBlankFieldSerializer self.data = {'title': ''} def test_create_blank_field(self): serializer = self.serializer_class(data=self.data) self.assertEqual(serializer.is_valid(), True) def test_create_model_blank_field(self): serializer = self.model_serializer_class(data=self.data) self.assertEqual(serializer.is_valid(), True) def test_create_model_null_field(self): serializer = self.model_serializer_class(data={'title': None}) self.assertEqual(serializer.is_valid(), True) def test_create_not_blank_field(self): """ Test to ensure blank data in a field not marked as blank=True is considered invalid in a non-model serializer """ serializer = self.not_blank_serializer_class(data=self.data) self.assertEqual(serializer.is_valid(), False) def test_create_model_not_blank_field(self): """ Test to ensure blank data in a field not marked as blank=True is considered invalid in a model serializer """ serializer = self.not_blank_model_serializer_class(data=self.data) self.assertEqual(serializer.is_valid(), False) def test_create_model_empty_field(self): serializer = self.model_serializer_class(data={}) self.assertEqual(serializer.is_valid(), True) #test for issue #460 class SerializerPickleTests(TestCase): """ Test pickleability of the output of Serializers """ def test_pickle_simple_model_serializer_data(self): """ Test simple serializer """ pickle.dumps(PersonSerializer(Person(name="Methusela", age=969)).data) def test_pickle_inner_serializer(self): """ Test pickling a serializer whose resulting .data (a SortedDictWithMetadata) will have unpickleable meta data--in order to make sure metadata doesn't get pulled into the pickle. See DictWithMetadata.__getstate__ """ class InnerPersonSerializer(serializers.ModelSerializer): class Meta: model = Person fields = ('name', 'age') pickle.dumps(InnerPersonSerializer(Person(name="Noah", age=950)).data, 0) def test_getstate_method_should_not_return_none(self): """ Regression test for #645. """ data = serializers.DictWithMetadata({1: 1}) self.assertEqual(data.__getstate__(), serializers.SortedDict({1: 1})) def test_serializer_data_is_pickleable(self): """ Another regression test for #645. """ data = serializers.SortedDictWithMetadata({1: 1}) repr(pickle.loads(pickle.dumps(data, 0))) # test for issue #725 class SeveralChoicesModel(models.Model): color = models.CharField( max_length=10, choices=[('red', 'Red'), ('green', 'Green'), ('blue', 'Blue')], blank=False ) drink = models.CharField( max_length=10, choices=[('beer', 'Beer'), ('wine', 'Wine'), ('cider', 'Cider')], blank=False, default='beer' ) os = models.CharField( max_length=10, choices=[('linux', 'Linux'), ('osx', 'OSX'), ('windows', 'Windows')], blank=True ) music_genre = models.CharField( max_length=10, choices=[('rock', 'Rock'), ('metal', 'Metal'), ('grunge', 'Grunge')], blank=True, default='metal' ) class SerializerChoiceFields(TestCase): def setUp(self): super(SerializerChoiceFields, self).setUp() class SeveralChoicesSerializer(serializers.ModelSerializer): class Meta: model = SeveralChoicesModel fields = ('color', 'drink', 'os', 'music_genre') self.several_choices_serializer = SeveralChoicesSerializer def test_choices_blank_false_not_default(self): serializer = self.several_choices_serializer() self.assertEqual( serializer.fields['color'].choices, [('red', 'Red'), ('green', 'Green'), ('blue', 'Blue')] ) def test_choices_blank_false_with_default(self): serializer = self.several_choices_serializer() self.assertEqual( serializer.fields['drink'].choices, [('beer', 'Beer'), ('wine', 'Wine'), ('cider', 'Cider')] ) def test_choices_blank_true_not_default(self): serializer = self.several_choices_serializer() self.assertEqual( serializer.fields['os'].choices, BLANK_CHOICE_DASH + [('linux', 'Linux'), ('osx', 'OSX'), ('windows', 'Windows')] ) def test_choices_blank_true_with_default(self): serializer = self.several_choices_serializer() self.assertEqual( serializer.fields['music_genre'].choices, BLANK_CHOICE_DASH + [('rock', 'Rock'), ('metal', 'Metal'), ('grunge', 'Grunge')] ) # Regression tests for #675 class Ticket(models.Model): assigned = models.ForeignKey( Person, related_name='assigned_tickets') reviewer = models.ForeignKey( Person, blank=True, null=True, related_name='reviewed_tickets') class SerializerRelatedChoicesTest(TestCase): def setUp(self): super(SerializerRelatedChoicesTest, self).setUp() class RelatedChoicesSerializer(serializers.ModelSerializer): class Meta: model = Ticket fields = ('assigned', 'reviewer') self.related_fields_serializer = RelatedChoicesSerializer def test_empty_queryset_required(self): serializer = self.related_fields_serializer() self.assertEqual(serializer.fields['assigned'].queryset.count(), 0) self.assertEqual( [x for x in serializer.fields['assigned'].widget.choices], [] ) def test_empty_queryset_not_required(self): serializer = self.related_fields_serializer() self.assertEqual(serializer.fields['reviewer'].queryset.count(), 0) self.assertEqual( [x for x in serializer.fields['reviewer'].widget.choices], [('', '---------')] ) def test_with_some_persons_required(self): Person.objects.create(name="Lionel Messi") Person.objects.create(name="Xavi Hernandez") serializer = self.related_fields_serializer() self.assertEqual(serializer.fields['assigned'].queryset.count(), 2) self.assertEqual( [x for x in serializer.fields['assigned'].widget.choices], [(1, 'Person object - 1'), (2, 'Person object - 2')] ) def test_with_some_persons_not_required(self): Person.objects.create(name="Lionel Messi") Person.objects.create(name="Xavi Hernandez") serializer = self.related_fields_serializer() self.assertEqual(serializer.fields['reviewer'].queryset.count(), 2) self.assertEqual( [x for x in serializer.fields['reviewer'].widget.choices], [('', '---------'), (1, 'Person object - 1'), (2, 'Person object - 2')] ) class DepthTest(TestCase): def test_implicit_nesting(self): writer = Person.objects.create(name="django", age=1) post = BlogPost.objects.create(title="Test blog post", writer=writer) comment = BlogPostComment.objects.create(text="Test blog post comment", blog_post=post) class BlogPostCommentSerializer(serializers.ModelSerializer): class Meta: model = BlogPostComment depth = 2 serializer = BlogPostCommentSerializer(instance=comment) expected = {'id': 1, 'text': 'Test blog post comment', 'blog_post': {'id': 1, 'title': 'Test blog post', 'writer': {'id': 1, 'name': 'django', 'age': 1}}} self.assertEqual(serializer.data, expected) def test_explicit_nesting(self): writer = Person.objects.create(name="django", age=1) post = BlogPost.objects.create(title="Test blog post", writer=writer) comment = BlogPostComment.objects.create(text="Test blog post comment", blog_post=post) class PersonSerializer(serializers.ModelSerializer): class Meta: model = Person class BlogPostSerializer(serializers.ModelSerializer): writer = PersonSerializer() class Meta: model = BlogPost class BlogPostCommentSerializer(serializers.ModelSerializer): blog_post = BlogPostSerializer() class Meta: model = BlogPostComment serializer = BlogPostCommentSerializer(instance=comment) expected = {'id': 1, 'text': 'Test blog post comment', 'blog_post': {'id': 1, 'title': 'Test blog post', 'writer': {'id': 1, 'name': 'django', 'age': 1}}} self.assertEqual(serializer.data, expected) class NestedSerializerContextTests(TestCase): def test_nested_serializer_context(self): """ Regression for #497 https://github.com/tomchristie/django-rest-framework/issues/497 """ class PhotoSerializer(serializers.ModelSerializer): class Meta: model = Photo fields = ("description", "callable") callable = serializers.SerializerMethodField('_callable') def _callable(self, instance): if not 'context_item' in self.context: raise RuntimeError("context isn't getting passed into 2nd level nested serializer") return "success" class AlbumSerializer(serializers.ModelSerializer): class Meta: model = Album fields = ("photo_set", "callable") photo_set = PhotoSerializer(source="photo_set") callable = serializers.SerializerMethodField("_callable") def _callable(self, instance): if not 'context_item' in self.context: raise RuntimeError("context isn't getting passed into 1st level nested serializer") return "success" class AlbumCollection(object): albums = None class AlbumCollectionSerializer(serializers.Serializer): albums = AlbumSerializer(source="albums") album1 = Album.objects.create(title="album 1") album2 = Album.objects.create(title="album 2") Photo.objects.create(description="Bigfoot", album=album1) Photo.objects.create(description="Unicorn", album=album1) Photo.objects.create(description="Yeti", album=album2) Photo.objects.create(description="Sasquatch", album=album2) album_collection = AlbumCollection() album_collection.albums = [album1, album2] # This will raise RuntimeError if context doesn't get passed correctly to the nested Serializers AlbumCollectionSerializer(album_collection, context={'context_item': 'album context'}).data class DeserializeListTestCase(TestCase): def setUp(self): self.data = { 'email': 'nobody@nowhere.com', 'content': 'This is some test content', 'created': datetime.datetime(2013, 3, 7), } def test_no_errors(self): data = [self.data.copy() for x in range(0, 3)] serializer = CommentSerializer(data=data, many=True) self.assertTrue(serializer.is_valid()) self.assertTrue(isinstance(serializer.object, list)) self.assertTrue( all((isinstance(item, Comment) for item in serializer.object)) ) def test_errors_return_as_list(self): invalid_item = self.data.copy() invalid_item['email'] = '' data = [self.data.copy(), invalid_item, self.data.copy()] serializer = CommentSerializer(data=data, many=True) self.assertFalse(serializer.is_valid()) expected = [{}, {'email': ['This field is required.']}, {}] self.assertEqual(serializer.errors, expected) # Test for issue 747 class LazyStringModel(object): def __init__(self, lazystring): self.lazystring = lazystring class LazyStringSerializer(serializers.Serializer): lazystring = serializers.Field() def restore_object(self, attrs, instance=None): if instance is not None: instance.lazystring = attrs.get('lazystring', instance.lazystring) return instance return LazyStringModel(**attrs) class LazyStringsTestCase(TestCase): def setUp(self): self.model = LazyStringModel(lazystring=_('lazystring')) def test_lazy_strings_are_translated(self): serializer = LazyStringSerializer(self.model) self.assertEqual(type(serializer.data['lazystring']), type('lazystring')) # Test for issue #467 class FieldLabelTest(TestCase): def setUp(self): self.serializer_class = BasicModelSerializer def test_label_from_model(self): """ Validates that label and help_text are correctly copied from the model class. """ serializer = self.serializer_class() text_field = serializer.fields['text'] self.assertEqual('Text comes here', text_field.label) self.assertEqual('Text description.', text_field.help_text) def test_field_ctor(self): """ This is check that ctor supports both label and help_text. """ self.assertEqual('Label', fields.Field(label='Label', help_text='Help').label) self.assertEqual('Help', fields.CharField(label='Label', help_text='Help').help_text) self.assertEqual('Label', relations.HyperlinkedRelatedField(view_name='fake', label='Label', help_text='Help', many=True).label) # Test for issue #961 class ManyFieldHelpTextTest(TestCase): def test_help_text_no_hold_down_control_msg(self): """ Validate that help_text doesn't contain the 'Hold down "Control" ...' message that Django appends to choice fields. """ rel_field = fields.Field(help_text=ManyToManyModel._meta.get_field('rel').help_text) self.assertEqual('Some help text.', rel_field.help_text) class AttributeMappingOnAutogeneratedFieldsTests(TestCase): def setUp(self): class AMOAFModel(RESTFrameworkModel): char_field = models.CharField(max_length=1024, blank=True) comma_separated_integer_field = models.CommaSeparatedIntegerField(max_length=1024, blank=True) decimal_field = models.DecimalField(max_digits=64, decimal_places=32, blank=True) email_field = models.EmailField(max_length=1024, blank=True) file_field = models.FileField(max_length=1024, blank=True) image_field = models.ImageField(max_length=1024, blank=True) slug_field = models.SlugField(max_length=1024, blank=True) url_field = models.URLField(max_length=1024, blank=True) class AMOAFSerializer(serializers.ModelSerializer): class Meta: model = AMOAFModel self.serializer_class = AMOAFSerializer self.fields_attributes = { 'char_field': [ ('max_length', 1024), ], 'comma_separated_integer_field': [ ('max_length', 1024), ], 'decimal_field': [ ('max_digits', 64), ('decimal_places', 32), ], 'email_field': [ ('max_length', 1024), ], 'file_field': [ ('max_length', 1024), ], 'image_field': [ ('max_length', 1024), ], 'slug_field': [ ('max_length', 1024), ], 'url_field': [ ('max_length', 1024), ], } def field_test(self, field): serializer = self.serializer_class(data={}) self.assertEqual(serializer.is_valid(), True) for attribute in self.fields_attributes[field]: self.assertEqual( getattr(serializer.fields[field], attribute[0]), attribute[1] ) def test_char_field(self): self.field_test('char_field') def test_comma_separated_integer_field(self): self.field_test('comma_separated_integer_field') def test_decimal_field(self): self.field_test('decimal_field') def test_email_field(self): self.field_test('email_field') def test_file_field(self): self.field_test('file_field') def test_image_field(self): self.field_test('image_field') def test_slug_field(self): self.field_test('slug_field') def test_url_field(self): self.field_test('url_field') class DefaultValuesOnAutogeneratedFieldsTests(TestCase): def setUp(self): class DVOAFModel(RESTFrameworkModel): positive_integer_field = models.PositiveIntegerField(blank=True) positive_small_integer_field = models.PositiveSmallIntegerField(blank=True) email_field = models.EmailField(blank=True) file_field = models.FileField(blank=True) image_field = models.ImageField(blank=True) slug_field = models.SlugField(blank=True) url_field = models.URLField(blank=True) class DVOAFSerializer(serializers.ModelSerializer): class Meta: model = DVOAFModel self.serializer_class = DVOAFSerializer self.fields_attributes = { 'positive_integer_field': [ ('min_value', 0), ], 'positive_small_integer_field': [ ('min_value', 0), ], 'email_field': [ ('max_length', 75), ], 'file_field': [ ('max_length', 100), ], 'image_field': [ ('max_length', 100), ], 'slug_field': [ ('max_length', 50), ], 'url_field': [ ('max_length', 200), ], } def field_test(self, field): serializer = self.serializer_class(data={}) self.assertEqual(serializer.is_valid(), True) for attribute in self.fields_attributes[field]: self.assertEqual( getattr(serializer.fields[field], attribute[0]), attribute[1] ) def test_positive_integer_field(self): self.field_test('positive_integer_field') def test_positive_small_integer_field(self): self.field_test('positive_small_integer_field') def test_email_field(self): self.field_test('email_field') def test_file_field(self): self.field_test('file_field') def test_image_field(self): self.field_test('image_field') def test_slug_field(self): self.field_test('slug_field') def test_url_field(self): self.field_test('url_field') class MetadataSerializer(serializers.Serializer): field1 = serializers.CharField(3, required=True) field2 = serializers.CharField(10, required=False) class MetadataSerializerTestCase(TestCase): def setUp(self): self.serializer = MetadataSerializer() def test_serializer_metadata(self): metadata = self.serializer.metadata() expected = { 'field1': { 'required': True, 'max_length': 3, 'type': 'string', 'read_only': False }, 'field2': { 'required': False, 'max_length': 10, 'type': 'string', 'read_only': False } } self.assertEqual(expected, metadata) ### Regression test for #840 class SimpleModel(models.Model): text = models.CharField(max_length=100) class SimpleModelSerializer(serializers.ModelSerializer): text = serializers.CharField() other = serializers.CharField() class Meta: model = SimpleModel def validate_other(self, attrs, source): del attrs['other'] return attrs class FieldValidationRemovingAttr(TestCase): def test_removing_non_model_field_in_validation(self): """ Removing an attr during field valiation should ensure that it is not passed through when restoring the object. This allows additional non-model fields to be supported. Regression test for #840. """ serializer = SimpleModelSerializer(data={'text': 'foo', 'other': 'bar'}) self.assertTrue(serializer.is_valid()) serializer.save() self.assertEqual(serializer.object.text, 'foo') ### Regression test for #878 class SimpleTargetModel(models.Model): text = models.CharField(max_length=100) class SimplePKSourceModelSerializer(serializers.Serializer): targets = serializers.PrimaryKeyRelatedField(queryset=SimpleTargetModel.objects.all(), many=True) text = serializers.CharField() class SimpleSlugSourceModelSerializer(serializers.Serializer): targets = serializers.SlugRelatedField(queryset=SimpleTargetModel.objects.all(), many=True, slug_field='pk') text = serializers.CharField() class SerializerSupportsManyRelationships(TestCase): def setUp(self): SimpleTargetModel.objects.create(text='foo') SimpleTargetModel.objects.create(text='bar') def test_serializer_supports_pk_many_relationships(self): """ Regression test for #878. Note that pk behavior has a different code path to usual cases, for performance reasons. """ serializer = SimplePKSourceModelSerializer(data={'text': 'foo', 'targets': [1, 2]}) self.assertTrue(serializer.is_valid()) self.assertEqual(serializer.data, {'text': 'foo', 'targets': [1, 2]}) def test_serializer_supports_slug_many_relationships(self): """ Regression test for #878. """ serializer = SimpleSlugSourceModelSerializer(data={'text': 'foo', 'targets': [1, 2]}) self.assertTrue(serializer.is_valid()) self.assertEqual(serializer.data, {'text': 'foo', 'targets': [1, 2]}) class TransformMethodsSerializer(serializers.Serializer): a = serializers.CharField() b_renamed = serializers.CharField(source='b') def transform_a(self, obj, value): return value.lower() def transform_b_renamed(self, obj, value): if value is not None: return 'and ' + value class TestSerializerTransformMethods(TestCase): def setUp(self): self.s = TransformMethodsSerializer() def test_transform_methods(self): self.assertEqual( self.s.to_native({'a': 'GREEN EGGS', 'b': 'HAM'}), { 'a': 'green eggs', 'b_renamed': 'and HAM', } ) def test_missing_fields(self): self.assertEqual( self.s.to_native({'a': 'GREEN EGGS'}), { 'a': 'green eggs', 'b_renamed': None, } )