mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-12-18 14:16:17 +03:00
959085c145
* Update relations.py
Currently if you define the slug field as a nested relationship in a `SlugRelatedField` while many=False, it will cause an attribute error. For example:
For this code:
```
class SomeSerializer(serializers.ModelSerializer):
some_field= serializers.SlugRelatedField(queryset=SomeClass.objects.all(), slug_field="foo__bar")
```
The POST request (or save operation) should work just fine, but if you use GET, then it will fail with Attribute error:
> AttributeError: 'SomeClass' object has no attribute 'foo__bar'
Thus I am handling nested relation here. Reference: https://stackoverflow.com/questions/75878103/drf-attributeerror-when-trying-to-creating-a-instance-with-slugrelatedfield-and/75882424#75882424
* Fixed test cases
* code comment changes related to slugrelatedfield
* changes based on pre-commit and removed comma which was added accidentally
* fixed primary keys of the mock object
* added more test cases based on review
---------
Co-authored-by: Arnab Shil <arnab.shil@thermofisher.com>
521 lines
20 KiB
Python
521 lines
20 KiB
Python
import uuid
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import pytest
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from _pytest.monkeypatch import MonkeyPatch
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from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
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from django.test import override_settings
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from django.urls import re_path
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from django.utils.datastructures import MultiValueDict
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from rest_framework import relations, 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 MockApiSettings:
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def __init__(self, cutoff, cutoff_text):
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self.HTML_SELECT_CUTOFF = cutoff
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self.HTML_SELECT_CUTOFF_TEXT = cutoff_text
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class TestRelatedFieldHTMLCutoff(APISimpleTestCase):
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def setUp(self):
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self.queryset = MockQueryset([
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MockObject(pk=i, name=str(i)) for i in range(0, 1100)
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])
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self.monkeypatch = MonkeyPatch()
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def test_no_settings(self):
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# The default is 1,000, so sans settings it should be 1,000 plus one.
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for many in (False, True):
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field = serializers.PrimaryKeyRelatedField(queryset=self.queryset,
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many=many)
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options = list(field.iter_options())
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assert len(options) == 1001
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assert options[-1].display_text == "More than 1000 items..."
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def test_settings_cutoff(self):
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self.monkeypatch.setattr(relations, "api_settings",
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MockApiSettings(2, "Cut Off"))
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for many in (False, True):
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field = serializers.PrimaryKeyRelatedField(queryset=self.queryset,
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many=many)
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options = list(field.iter_options())
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assert len(options) == 3 # 2 real items plus the 'Cut Off' item.
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assert options[-1].display_text == "Cut Off"
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def test_settings_cutoff_none(self):
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# Setting it to None should mean no limit; the default limit is 1,000.
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self.monkeypatch.setattr(relations, "api_settings",
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MockApiSettings(None, "Cut Off"))
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for many in (False, True):
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field = serializers.PrimaryKeyRelatedField(queryset=self.queryset,
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many=many)
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options = list(field.iter_options())
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assert len(options) == 1100
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def test_settings_kwargs_cutoff(self):
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# The explicit argument should override the settings.
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self.monkeypatch.setattr(relations, "api_settings",
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MockApiSettings(2, "Cut Off"))
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for many in (False, True):
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field = serializers.PrimaryKeyRelatedField(queryset=self.queryset,
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many=many,
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html_cutoff=100)
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options = list(field.iter_options())
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assert len(options) == 101
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assert options[-1].display_text == "Cut Off"
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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_related_lookup_bool(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.field.to_internal_value(True)
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msg = excinfo.value.detail[0]
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assert msg == 'Incorrect type. Expected pk value, received bool.'
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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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urlpatterns = [
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re_path(r'^example/(?P<name>.+)/$', lambda: None, name='example'),
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]
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@override_settings(ROOT_URLCONF='tests.test_relations')
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class TestHyperlinkedRelatedField(APISimpleTestCase):
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def setUp(self):
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self.queryset = MockQueryset([
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MockObject(pk=1, name='foobar'),
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MockObject(pk=2, name='bazABCqux'),
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MockObject(pk=2, name='bazABC qux'),
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])
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self.field = serializers.HyperlinkedRelatedField(
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view_name='example',
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lookup_field='name',
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lookup_url_kwarg='name',
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queryset=self.queryset,
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)
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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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def test_serialize_empty_relationship_attribute(self):
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class TestSerializer(serializers.Serializer):
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via_unreachable = serializers.HyperlinkedRelatedField(
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source='does_not_exist.unreachable',
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view_name='example',
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read_only=True,
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)
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class TestSerializable:
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@property
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def does_not_exist(self):
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raise ObjectDoesNotExist
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serializer = TestSerializer(TestSerializable())
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assert serializer.data == {'via_unreachable': None}
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def test_hyperlinked_related_lookup_exists(self):
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instance = self.field.to_internal_value('http://example.org/example/foobar/')
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assert instance is self.queryset.items[0]
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def test_hyperlinked_related_lookup_url_encoded_exists(self):
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instance = self.field.to_internal_value('http://example.org/example/baz%41%42%43qux/')
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assert instance is self.queryset.items[1]
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def test_hyperlinked_related_lookup_url_space_encoded_exists(self):
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instance = self.field.to_internal_value('http://example.org/example/bazABC%20qux/')
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assert instance is self.queryset.items[2]
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def test_hyperlinked_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('http://example.org/example/doesnotexist/')
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msg = excinfo.value.detail[0]
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assert msg == 'Invalid hyperlink - Object does not exist.'
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def test_hyperlinked_related_internal_type_error(self):
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class Field(serializers.HyperlinkedRelatedField):
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def get_object(self, incorrect, signature):
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raise NotImplementedError()
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field = Field(view_name='example', queryset=self.queryset)
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with pytest.raises(TypeError):
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field.to_internal_value('http://example.org/example/doesnotexist/')
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def hyperlinked_related_queryset_error(self, exc_type):
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class QuerySet:
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def get(self, *args, **kwargs):
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raise exc_type
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field = serializers.HyperlinkedRelatedField(
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view_name='example',
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lookup_field='name',
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queryset=QuerySet(),
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)
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with pytest.raises(serializers.ValidationError) as excinfo:
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field.to_internal_value('http://example.org/example/doesnotexist/')
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msg = excinfo.value.detail[0]
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assert msg == 'Invalid hyperlink - Object does not exist.'
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def test_hyperlinked_related_queryset_type_error(self):
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self.hyperlinked_related_queryset_error(TypeError)
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def test_hyperlinked_related_queryset_value_error(self):
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self.hyperlinked_related_queryset_error(ValueError)
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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 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 TestNestedSlugRelatedField(APISimpleTestCase):
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def setUp(self):
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self.queryset = MockQueryset([
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MockObject(
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pk=1, name='foo', nested=MockObject(
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pk=2, name='bar', nested=MockObject(
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pk=7, name="foobar"
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)
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)
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),
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MockObject(
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pk=3, name='hello', nested=MockObject(
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pk=4, name='world', nested=MockObject(
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pk=8, name="helloworld"
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)
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)
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),
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MockObject(
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pk=5, name='harry', nested=MockObject(
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pk=6, name='potter', nested=MockObject(
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pk=9, name="harrypotter"
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)
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)
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)
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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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self.nested_field = serializers.SlugRelatedField(
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slug_field='nested__name', queryset=self.queryset
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)
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self.nested_nested_field = serializers.SlugRelatedField(
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slug_field='nested__nested__name', queryset=self.queryset
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)
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# testing nested inside nested relations
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def test_slug_related_nested_nested_lookup_exists(self):
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instance = self.nested_nested_field.to_internal_value(
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self.instance.nested.nested.name
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)
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assert instance is self.instance
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def test_slug_related_nested_nested_lookup_does_not_exist(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.nested_nested_field.to_internal_value('doesnotexist')
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msg = excinfo.value.detail[0]
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assert msg == \
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'Object with nested__nested__name=doesnotexist does not exist.'
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def test_slug_related_nested_nested_lookup_invalid_type(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.nested_nested_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_nested_nested_representation(self):
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representation =\
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self.nested_nested_field.to_representation(self.instance)
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assert representation == self.instance.nested.nested.name
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def test_nested_nested_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='nested__nested__name')
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field.to_internal_value(self.instance.nested.nested.name)
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# testing nested relations
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def test_slug_related_nested_lookup_exists(self):
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instance = \
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self.nested_field.to_internal_value(self.instance.nested.name)
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assert instance is self.instance
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def test_slug_related_nested_lookup_does_not_exist(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.nested_field.to_internal_value('doesnotexist')
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msg = excinfo.value.detail[0]
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assert msg == 'Object with nested__name=doesnotexist does not exist.'
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def test_slug_related_nested_lookup_invalid_type(self):
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with pytest.raises(serializers.ValidationError) as excinfo:
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self.nested_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_nested_representation(self):
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representation = self.nested_field.to_representation(self.instance)
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assert representation == self.instance.nested.name
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def test_nested_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='nested__name')
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field.to_internal_value(self.instance.nested.name)
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# testing non-nested relations
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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:
|
|
self.field.to_internal_value(BadType())
|
|
msg = excinfo.value.detail[0]
|
|
assert msg == 'Invalid value.'
|
|
|
|
def test_representation(self):
|
|
representation = self.field.to_representation(self.instance)
|
|
assert representation == self.instance.name
|
|
|
|
def test_overriding_get_queryset(self):
|
|
qs = self.queryset
|
|
|
|
class NoQuerySetSlugRelatedField(serializers.SlugRelatedField):
|
|
def get_queryset(self):
|
|
return qs
|
|
|
|
field = NoQuerySetSlugRelatedField(slug_field='name')
|
|
field.to_internal_value(self.instance.name)
|
|
|
|
|
|
class TestManyRelatedField(APISimpleTestCase):
|
|
def setUp(self):
|
|
self.instance = MockObject(pk=1, name='foo')
|
|
self.field = serializers.StringRelatedField(many=True)
|
|
self.field.field_name = 'foo'
|
|
|
|
def test_get_value_regular_dictionary_full(self):
|
|
assert 'bar' == self.field.get_value({'foo': 'bar'})
|
|
assert empty == self.field.get_value({'baz': 'bar'})
|
|
|
|
def test_get_value_regular_dictionary_partial(self):
|
|
setattr(self.field.root, 'partial', True)
|
|
assert 'bar' == self.field.get_value({'foo': 'bar'})
|
|
assert empty == self.field.get_value({'baz': 'bar'})
|
|
|
|
def test_get_value_multi_dictionary_full(self):
|
|
mvd = MultiValueDict({'foo': ['bar1', 'bar2']})
|
|
assert ['bar1', 'bar2'] == self.field.get_value(mvd)
|
|
|
|
mvd = MultiValueDict({'baz': ['bar1', 'bar2']})
|
|
assert [] == self.field.get_value(mvd)
|
|
|
|
def test_get_value_multi_dictionary_partial(self):
|
|
setattr(self.field.root, 'partial', True)
|
|
mvd = MultiValueDict({'foo': ['bar1', 'bar2']})
|
|
assert ['bar1', 'bar2'] == self.field.get_value(mvd)
|
|
|
|
mvd = MultiValueDict({'baz': ['bar1', 'bar2']})
|
|
assert empty == self.field.get_value(mvd)
|
|
|
|
|
|
class TestHyperlink:
|
|
def setup_method(self):
|
|
self.default_hyperlink = serializers.Hyperlink('http://example.com', 'test')
|
|
|
|
def test_can_be_pickled(self):
|
|
import pickle
|
|
upkled = pickle.loads(pickle.dumps(self.default_hyperlink))
|
|
assert upkled == self.default_hyperlink
|
|
assert upkled.name == self.default_hyperlink.name
|