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289 lines
11 KiB
Python
289 lines
11 KiB
Python
from .utils import mock_reverse, fail_reverse, BadType, MockObject, MockQueryset
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from django.core.exceptions import ImproperlyConfigured
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from rest_framework import serializers
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from rest_framework.test import APISimpleTestCase
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import pytest
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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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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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# Older tests, for review...
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# """
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# General tests for relational fields.
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# """
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# from __future__ import unicode_literals
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# from django import get_version
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# from django.db import models
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# from django.test import TestCase
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# from django.utils import unittest
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# from rest_framework import serializers
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# from tests.models import BlogPost
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# class NullModel(models.Model):
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# pass
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# class FieldTests(TestCase):
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# def test_pk_related_field_with_empty_string(self):
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# """
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# Regression test for #446
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# https://github.com/tomchristie/django-rest-framework/issues/446
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# """
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# field = serializers.PrimaryKeyRelatedField(queryset=NullModel.objects.all())
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# self.assertRaises(serializers.ValidationError, field.to_primitive, '')
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# self.assertRaises(serializers.ValidationError, field.to_primitive, [])
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# def test_hyperlinked_related_field_with_empty_string(self):
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# field = serializers.HyperlinkedRelatedField(queryset=NullModel.objects.all(), view_name='')
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# self.assertRaises(serializers.ValidationError, field.to_primitive, '')
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# self.assertRaises(serializers.ValidationError, field.to_primitive, [])
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# def test_slug_related_field_with_empty_string(self):
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# field = serializers.SlugRelatedField(queryset=NullModel.objects.all(), slug_field='pk')
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# self.assertRaises(serializers.ValidationError, field.to_primitive, '')
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# self.assertRaises(serializers.ValidationError, field.to_primitive, [])
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# class TestManyRelatedMixin(TestCase):
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# def test_missing_many_to_many_related_field(self):
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# '''
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# Regression test for #632
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# https://github.com/tomchristie/django-rest-framework/pull/632
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# '''
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# field = serializers.RelatedField(many=True, read_only=False)
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# into = {}
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# field.field_from_native({}, None, 'field_name', into)
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# self.assertEqual(into['field_name'], [])
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# # Regression tests for #694 (`source` attribute on related fields)
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# class RelatedFieldSourceTests(TestCase):
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# def test_related_manager_source(self):
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# """
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# Relational fields should be able to use manager-returning methods as their source.
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# """
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# BlogPost.objects.create(title='blah')
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# field = serializers.RelatedField(many=True, source='get_blogposts_manager')
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# class ClassWithManagerMethod(object):
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# def get_blogposts_manager(self):
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# return BlogPost.objects
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# obj = ClassWithManagerMethod()
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# value = field.field_to_native(obj, 'field_name')
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# self.assertEqual(value, ['BlogPost object'])
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# def test_related_queryset_source(self):
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# """
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# Relational fields should be able to use queryset-returning methods as their source.
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# """
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# BlogPost.objects.create(title='blah')
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# field = serializers.RelatedField(many=True, source='get_blogposts_queryset')
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# class ClassWithQuerysetMethod(object):
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# def get_blogposts_queryset(self):
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# return BlogPost.objects.all()
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# obj = ClassWithQuerysetMethod()
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# value = field.field_to_native(obj, 'field_name')
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# self.assertEqual(value, ['BlogPost object'])
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# def test_dotted_source(self):
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# """
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# Source argument should support dotted.source notation.
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# """
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# BlogPost.objects.create(title='blah')
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# field = serializers.RelatedField(many=True, source='a.b.c')
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# class ClassWithQuerysetMethod(object):
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# a = {
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# 'b': {
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# 'c': BlogPost.objects.all()
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# }
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# }
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# obj = ClassWithQuerysetMethod()
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# value = field.field_to_native(obj, 'field_name')
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# self.assertEqual(value, ['BlogPost object'])
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# # Regression for #1129
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# def test_exception_for_incorect_fk(self):
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# """
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# Check that the exception message are correct if the source field
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# doesn't exist.
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# """
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# from tests.models import ManyToManySource
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# class Meta:
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# model = ManyToManySource
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# attrs = {
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# 'name': serializers.SlugRelatedField(
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# slug_field='name', source='banzai'),
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# 'Meta': Meta,
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# }
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# TestSerializer = type(
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# str('TestSerializer'),
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# (serializers.ModelSerializer,),
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# attrs
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# )
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# with self.assertRaises(AttributeError):
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# TestSerializer(data={'name': 'foo'})
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# @unittest.skipIf(get_version() < '1.6.0', 'Upstream behaviour changed in v1.6')
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# class RelatedFieldChoicesTests(TestCase):
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# """
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# Tests for #1408 "Web browseable API doesn't have blank option on drop down list box"
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# https://github.com/tomchristie/django-rest-framework/issues/1408
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# """
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# def test_blank_option_is_added_to_choice_if_required_equals_false(self):
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# """
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# """
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# post = BlogPost(title="Checking blank option is added")
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# post.save()
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# queryset = BlogPost.objects.all()
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# field = serializers.RelatedField(required=False, queryset=queryset)
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# choice_count = BlogPost.objects.count()
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# widget_count = len(field.widget.choices)
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# self.assertEqual(widget_count, choice_count + 1, 'BLANK_CHOICE_DASH option should have been added')
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