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https://github.com/encode/django-rest-framework.git
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e34a34e90b
This implementation allows detection of empty values that are non-nullable, allowing the field to return None values for such cases
242 lines
9.1 KiB
Python
242 lines
9.1 KiB
Python
import uuid
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import pytest
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from django.core.exceptions import ImproperlyConfigured
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from django.utils.datastructures import MultiValueDict
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from rest_framework import serializers
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from rest_framework.fields import empty
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from rest_framework.test import APISimpleTestCase
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from .utils import (
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BadType, MockObject, MockQueryset, fail_reverse, mock_reverse
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)
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class TestStringRelatedField(APISimpleTestCase):
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def setUp(self):
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self.instance = MockObject(pk=1, name='foo')
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self.field = serializers.StringRelatedField()
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def test_string_related_representation(self):
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representation = self.field.to_representation(self.instance)
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assert representation == '<MockObject name=foo, pk=1>'
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class TestPrimaryKeyRelatedField(APISimpleTestCase):
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def setUp(self):
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self.queryset = MockQueryset([
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MockObject(pk=1, name='foo'),
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MockObject(pk=2, name='bar'),
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MockObject(pk=3, name='baz')
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])
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self.instance = self.queryset.items[2]
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self.field = serializers.PrimaryKeyRelatedField(queryset=self.queryset)
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def test_pk_related_lookup_exists(self):
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instance = self.field.to_internal_value(self.instance.pk)
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assert instance is self.instance
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def test_pk_related_lookup_does_not_exist(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.field.to_internal_value(4)
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msg = excinfo.value.detail[0]
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assert msg == 'Invalid pk "4" - object does not exist.'
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def test_pk_related_lookup_invalid_type(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.field.to_internal_value(BadType())
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msg = excinfo.value.detail[0]
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assert msg == 'Incorrect type. Expected pk value, received BadType.'
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def test_pk_representation(self):
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representation = self.field.to_representation(self.instance)
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assert representation == self.instance.pk
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def test_explicit_many_false(self):
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field = serializers.PrimaryKeyRelatedField(queryset=self.queryset, many=False)
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instance = field.to_internal_value(self.instance.pk)
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assert instance is self.instance
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class TestProxiedPrimaryKeyRelatedField(APISimpleTestCase):
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def setUp(self):
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self.queryset = MockQueryset([
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MockObject(pk=uuid.UUID(int=0), name='foo'),
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MockObject(pk=uuid.UUID(int=1), name='bar'),
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MockObject(pk=uuid.UUID(int=2), name='baz')
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])
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self.instance = self.queryset.items[2]
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self.field = serializers.PrimaryKeyRelatedField(
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queryset=self.queryset,
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pk_field=serializers.UUIDField(format='int')
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)
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def test_pk_related_lookup_exists(self):
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instance = self.field.to_internal_value(self.instance.pk.int)
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assert instance is self.instance
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def test_pk_related_lookup_does_not_exist(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.field.to_internal_value(4)
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msg = excinfo.value.detail[0]
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assert msg == 'Invalid pk "00000000-0000-0000-0000-000000000004" - object does not exist.'
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def test_pk_representation(self):
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representation = self.field.to_representation(self.instance)
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assert representation == self.instance.pk.int
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class TestHyperlinkedRelatedField(APISimpleTestCase):
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def setUp(self):
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self.field = serializers.HyperlinkedRelatedField(
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view_name='example', read_only=True)
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self.field.reverse = mock_reverse
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self.field._context = {'request': True}
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def test_representation_unsaved_object_with_non_nullable_pk(self):
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representation = self.field.to_representation(MockObject(pk=''))
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assert representation is None
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class TestHyperlinkedIdentityField(APISimpleTestCase):
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def setUp(self):
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self.instance = MockObject(pk=1, name='foo')
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self.field = serializers.HyperlinkedIdentityField(view_name='example')
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self.field.reverse = mock_reverse
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self.field._context = {'request': True}
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def test_representation(self):
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representation = self.field.to_representation(self.instance)
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assert representation == 'http://example.org/example/1/'
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def test_representation_unsaved_object(self):
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representation = self.field.to_representation(MockObject(pk=None))
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assert representation is None
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def test_representation_with_format(self):
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self.field._context['format'] = 'xml'
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representation = self.field.to_representation(self.instance)
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assert representation == 'http://example.org/example/1.xml/'
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def test_improperly_configured(self):
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"""
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If a matching view cannot be reversed with the given instance,
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the the user has misconfigured something, as the URL conf and the
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hyperlinked field do not match.
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"""
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self.field.reverse = fail_reverse
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with pytest.raises(ImproperlyConfigured):
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self.field.to_representation(self.instance)
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class TestHyperlinkedIdentityFieldWithFormat(APISimpleTestCase):
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"""
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Tests for a hyperlinked identity field that has a `format` set,
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which enforces that alternate formats are never linked too.
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Eg. If your API includes some endpoints that accept both `.xml` and `.json`,
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but other endpoints that only accept `.json`, we allow for hyperlinked
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relationships that enforce only a single suffix type.
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"""
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def setUp(self):
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self.instance = MockObject(pk=1, name='foo')
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self.field = serializers.HyperlinkedIdentityField(view_name='example', format='json')
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self.field.reverse = mock_reverse
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self.field._context = {'request': True}
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def test_representation(self):
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representation = self.field.to_representation(self.instance)
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assert representation == 'http://example.org/example/1/'
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def test_representation_with_format(self):
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self.field._context['format'] = 'xml'
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representation = self.field.to_representation(self.instance)
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assert representation == 'http://example.org/example/1.json/'
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class TestSlugRelatedField(APISimpleTestCase):
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def setUp(self):
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self.queryset = MockQueryset([
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MockObject(pk=1, name='foo'),
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MockObject(pk=2, name='bar'),
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MockObject(pk=3, name='baz')
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])
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self.instance = self.queryset.items[2]
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self.field = serializers.SlugRelatedField(
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slug_field='name', queryset=self.queryset
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)
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def test_slug_related_lookup_exists(self):
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instance = self.field.to_internal_value(self.instance.name)
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assert instance is self.instance
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def test_slug_related_lookup_does_not_exist(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.field.to_internal_value('doesnotexist')
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msg = excinfo.value.detail[0]
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assert msg == 'Object with name=doesnotexist does not exist.'
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def test_slug_related_lookup_invalid_type(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.field.to_internal_value(BadType())
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msg = excinfo.value.detail[0]
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assert msg == 'Invalid value.'
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def test_representation(self):
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representation = self.field.to_representation(self.instance)
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assert representation == self.instance.name
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def test_overriding_get_queryset(self):
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qs = self.queryset
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class NoQuerySetSlugRelatedField(serializers.SlugRelatedField):
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def get_queryset(self):
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return qs
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field = NoQuerySetSlugRelatedField(slug_field='name')
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field.to_internal_value(self.instance.name)
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class TestManyRelatedField(APISimpleTestCase):
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def setUp(self):
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self.instance = MockObject(pk=1, name='foo')
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self.field = serializers.StringRelatedField(many=True)
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self.field.field_name = 'foo'
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def test_get_value_regular_dictionary_full(self):
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assert 'bar' == self.field.get_value({'foo': 'bar'})
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assert empty == self.field.get_value({'baz': 'bar'})
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def test_get_value_regular_dictionary_partial(self):
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setattr(self.field.root, 'partial', True)
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assert 'bar' == self.field.get_value({'foo': 'bar'})
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assert empty == self.field.get_value({'baz': 'bar'})
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def test_get_value_multi_dictionary_full(self):
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mvd = MultiValueDict({'foo': ['bar1', 'bar2']})
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assert ['bar1', 'bar2'] == self.field.get_value(mvd)
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mvd = MultiValueDict({'baz': ['bar1', 'bar2']})
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assert [] == self.field.get_value(mvd)
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def test_get_value_multi_dictionary_partial(self):
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setattr(self.field.root, 'partial', True)
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mvd = MultiValueDict({'foo': ['bar1', 'bar2']})
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assert ['bar1', 'bar2'] == self.field.get_value(mvd)
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mvd = MultiValueDict({'baz': ['bar1', 'bar2']})
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assert empty == self.field.get_value(mvd)
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class TestHyperlink:
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def setup(self):
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self.default_hyperlink = serializers.Hyperlink('http://example.com', 'test')
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def test_can_be_pickled(self):
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import pickle
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upkled = pickle.loads(pickle.dumps(self.default_hyperlink))
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assert upkled == self.default_hyperlink
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assert upkled.name == self.default_hyperlink.name
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