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56946fac8f
* Preserve messages for wrapped Django exceptions * Fix the test * Update test_generics.py * Update test_generics.py Co-authored-by: Tom Christie <tom@tomchristie.com>
701 lines
25 KiB
Python
701 lines
25 KiB
Python
import pytest
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from django.db import models
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from django.http import Http404
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from django.shortcuts import get_object_or_404
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from django.test import TestCase
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from rest_framework import generics, renderers, serializers, status
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from rest_framework.exceptions import ErrorDetail
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from rest_framework.response import Response
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from rest_framework.test import APIRequestFactory
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from tests.models import (
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BasicModel, ForeignKeySource, ForeignKeyTarget, RESTFrameworkModel,
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UUIDForeignKeyTarget
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)
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factory = APIRequestFactory()
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# Models
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class SlugBasedModel(RESTFrameworkModel):
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text = models.CharField(max_length=100)
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slug = models.SlugField(max_length=32)
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# Model for regression test for #285
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class Comment(RESTFrameworkModel):
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email = models.EmailField()
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content = models.CharField(max_length=200)
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created = models.DateTimeField(auto_now_add=True)
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# Serializers
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class BasicSerializer(serializers.ModelSerializer):
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class Meta:
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model = BasicModel
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fields = '__all__'
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class ForeignKeySerializer(serializers.ModelSerializer):
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class Meta:
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model = ForeignKeySource
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fields = '__all__'
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class SlugSerializer(serializers.ModelSerializer):
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slug = serializers.ReadOnlyField()
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class Meta:
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model = SlugBasedModel
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fields = ('text', 'slug')
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# Views
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class RootView(generics.ListCreateAPIView):
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queryset = BasicModel.objects.all()
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serializer_class = BasicSerializer
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class InstanceView(generics.RetrieveUpdateDestroyAPIView):
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queryset = BasicModel.objects.exclude(text='filtered out')
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serializer_class = BasicSerializer
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class FKInstanceView(generics.RetrieveUpdateDestroyAPIView):
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queryset = ForeignKeySource.objects.all()
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serializer_class = ForeignKeySerializer
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class SlugBasedInstanceView(InstanceView):
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"""
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A model with a slug-field.
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"""
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queryset = SlugBasedModel.objects.all()
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serializer_class = SlugSerializer
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lookup_field = 'slug'
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# Tests
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class TestRootView(TestCase):
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def setUp(self):
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"""
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Create 3 BasicModel instances.
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"""
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items = ['foo', 'bar', 'baz']
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for item in items:
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BasicModel(text=item).save()
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self.objects = BasicModel.objects
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self.data = [
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{'id': obj.id, 'text': obj.text}
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for obj in self.objects.all()
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]
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self.view = RootView.as_view()
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def test_get_root_view(self):
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"""
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GET requests to ListCreateAPIView should return list of objects.
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"""
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request = factory.get('/')
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with self.assertNumQueries(1):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_200_OK
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assert response.data == self.data
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def test_head_root_view(self):
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"""
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HEAD requests to ListCreateAPIView should return 200.
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"""
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request = factory.head('/')
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with self.assertNumQueries(1):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_200_OK
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def test_post_root_view(self):
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"""
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POST requests to ListCreateAPIView should create a new object.
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"""
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data = {'text': 'foobar'}
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request = factory.post('/', data, format='json')
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with self.assertNumQueries(1):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_201_CREATED
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assert response.data == {'id': 4, 'text': 'foobar'}
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created = self.objects.get(id=4)
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assert created.text == 'foobar'
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def test_put_root_view(self):
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"""
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PUT requests to ListCreateAPIView should not be allowed
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"""
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data = {'text': 'foobar'}
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request = factory.put('/', data, format='json')
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with self.assertNumQueries(0):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
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assert response.data == {"detail": 'Method "PUT" not allowed.'}
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def test_delete_root_view(self):
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"""
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DELETE requests to ListCreateAPIView should not be allowed
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"""
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request = factory.delete('/')
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with self.assertNumQueries(0):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
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assert response.data == {"detail": 'Method "DELETE" not allowed.'}
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def test_post_cannot_set_id(self):
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"""
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POST requests to create a new object should not be able to set the id.
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"""
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data = {'id': 999, 'text': 'foobar'}
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request = factory.post('/', data, format='json')
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with self.assertNumQueries(1):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_201_CREATED
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assert response.data == {'id': 4, 'text': 'foobar'}
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created = self.objects.get(id=4)
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assert created.text == 'foobar'
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def test_post_error_root_view(self):
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"""
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POST requests to ListCreateAPIView in HTML should include a form error.
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"""
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data = {'text': 'foobar' * 100}
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request = factory.post('/', data, HTTP_ACCEPT='text/html')
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response = self.view(request).render()
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expected_error = '<span class="help-block">Ensure this field has no more than 100 characters.</span>'
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assert expected_error in response.rendered_content.decode()
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EXPECTED_QUERIES_FOR_PUT = 2
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class TestInstanceView(TestCase):
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def setUp(self):
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"""
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Create 3 BasicModel instances.
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"""
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items = ['foo', 'bar', 'baz', 'filtered out']
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for item in items:
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BasicModel(text=item).save()
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self.objects = BasicModel.objects.exclude(text='filtered out')
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self.data = [
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{'id': obj.id, 'text': obj.text}
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for obj in self.objects.all()
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]
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self.view = InstanceView.as_view()
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self.slug_based_view = SlugBasedInstanceView.as_view()
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def test_get_instance_view(self):
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"""
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GET requests to RetrieveUpdateDestroyAPIView should return a single object.
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"""
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request = factory.get('/1')
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with self.assertNumQueries(1):
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response = self.view(request, pk=1).render()
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assert response.status_code == status.HTTP_200_OK
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assert response.data == self.data[0]
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def test_post_instance_view(self):
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"""
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POST requests to RetrieveUpdateDestroyAPIView should not be allowed
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"""
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data = {'text': 'foobar'}
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request = factory.post('/', data, format='json')
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with self.assertNumQueries(0):
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response = self.view(request).render()
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assert response.status_code == status.HTTP_405_METHOD_NOT_ALLOWED
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assert response.data == {"detail": 'Method "POST" not allowed.'}
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def test_put_instance_view(self):
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"""
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PUT requests to RetrieveUpdateDestroyAPIView should update an object.
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"""
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data = {'text': 'foobar'}
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request = factory.put('/1', data, format='json')
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with self.assertNumQueries(EXPECTED_QUERIES_FOR_PUT):
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response = self.view(request, pk='1').render()
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assert response.status_code == status.HTTP_200_OK
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assert dict(response.data) == {'id': 1, 'text': 'foobar'}
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updated = self.objects.get(id=1)
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assert updated.text == 'foobar'
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def test_patch_instance_view(self):
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"""
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PATCH requests to RetrieveUpdateDestroyAPIView should update an object.
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"""
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data = {'text': 'foobar'}
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request = factory.patch('/1', data, format='json')
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with self.assertNumQueries(EXPECTED_QUERIES_FOR_PUT):
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response = self.view(request, pk=1).render()
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assert response.status_code == status.HTTP_200_OK
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assert response.data == {'id': 1, 'text': 'foobar'}
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updated = self.objects.get(id=1)
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assert updated.text == 'foobar'
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def test_delete_instance_view(self):
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"""
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DELETE requests to RetrieveUpdateDestroyAPIView should delete an object.
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"""
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request = factory.delete('/1')
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with self.assertNumQueries(2):
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response = self.view(request, pk=1).render()
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assert response.status_code == status.HTTP_204_NO_CONTENT
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assert response.content == b''
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ids = [obj.id for obj in self.objects.all()]
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assert ids == [2, 3]
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def test_get_instance_view_incorrect_arg(self):
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"""
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GET requests with an incorrect pk type, should raise 404, not 500.
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Regression test for #890.
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"""
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request = factory.get('/a')
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with self.assertNumQueries(0):
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response = self.view(request, pk='a').render()
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assert response.status_code == status.HTTP_404_NOT_FOUND
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def test_put_cannot_set_id(self):
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"""
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PUT requests to create a new object should not be able to set the id.
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"""
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data = {'id': 999, 'text': 'foobar'}
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request = factory.put('/1', data, format='json')
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with self.assertNumQueries(EXPECTED_QUERIES_FOR_PUT):
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response = self.view(request, pk=1).render()
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assert response.status_code == status.HTTP_200_OK
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assert response.data == {'id': 1, 'text': 'foobar'}
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updated = self.objects.get(id=1)
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assert updated.text == 'foobar'
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def test_put_to_deleted_instance(self):
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"""
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PUT requests to RetrieveUpdateDestroyAPIView should return 404 if
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an object does not currently exist.
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"""
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self.objects.get(id=1).delete()
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data = {'text': 'foobar'}
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request = factory.put('/1', data, format='json')
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with self.assertNumQueries(1):
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response = self.view(request, pk=1).render()
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assert response.status_code == status.HTTP_404_NOT_FOUND
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def test_put_to_filtered_out_instance(self):
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"""
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PUT requests to an URL of instance which is filtered out should not be
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able to create new objects.
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"""
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data = {'text': 'foo'}
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filtered_out_pk = BasicModel.objects.filter(text='filtered out')[0].pk
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request = factory.put('/{}'.format(filtered_out_pk), data, format='json')
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response = self.view(request, pk=filtered_out_pk).render()
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assert response.status_code == status.HTTP_404_NOT_FOUND
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def test_patch_cannot_create_an_object(self):
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"""
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PATCH requests should not be able to create objects.
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"""
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data = {'text': 'foobar'}
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request = factory.patch('/999', data, format='json')
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with self.assertNumQueries(1):
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response = self.view(request, pk=999).render()
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assert response.status_code == status.HTTP_404_NOT_FOUND
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assert not self.objects.filter(id=999).exists()
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def test_put_error_instance_view(self):
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"""
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Incorrect PUT requests in HTML should include a form error.
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"""
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data = {'text': 'foobar' * 100}
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request = factory.put('/', data, HTTP_ACCEPT='text/html')
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response = self.view(request, pk=1).render()
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expected_error = '<span class="help-block">Ensure this field has no more than 100 characters.</span>'
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assert expected_error in response.rendered_content.decode()
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class TestFKInstanceView(TestCase):
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def setUp(self):
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"""
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Create 3 BasicModel instances.
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"""
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items = ['foo', 'bar', 'baz']
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for item in items:
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t = ForeignKeyTarget(name=item)
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t.save()
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ForeignKeySource(name='source_' + item, target=t).save()
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self.objects = ForeignKeySource.objects
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self.data = [
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{'id': obj.id, 'name': obj.name}
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for obj in self.objects.all()
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]
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self.view = FKInstanceView.as_view()
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class TestOverriddenGetObject(TestCase):
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"""
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Test cases for a RetrieveUpdateDestroyAPIView that does NOT use the
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queryset/model mechanism but instead overrides get_object()
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"""
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def setUp(self):
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"""
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Create 3 BasicModel instances.
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"""
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items = ['foo', 'bar', 'baz']
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for item in items:
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BasicModel(text=item).save()
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self.objects = BasicModel.objects
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self.data = [
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{'id': obj.id, 'text': obj.text}
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for obj in self.objects.all()
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]
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class OverriddenGetObjectView(generics.RetrieveUpdateDestroyAPIView):
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"""
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Example detail view for override of get_object().
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"""
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serializer_class = BasicSerializer
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def get_object(self):
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pk = int(self.kwargs['pk'])
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return get_object_or_404(BasicModel.objects.all(), id=pk)
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self.view = OverriddenGetObjectView.as_view()
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def test_overridden_get_object_view(self):
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"""
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GET requests to RetrieveUpdateDestroyAPIView should return a single object.
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"""
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request = factory.get('/1')
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with self.assertNumQueries(1):
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response = self.view(request, pk=1).render()
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assert response.status_code == status.HTTP_200_OK
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assert response.data == self.data[0]
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# Regression test for #285
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class CommentSerializer(serializers.ModelSerializer):
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class Meta:
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model = Comment
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exclude = ('created',)
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class CommentView(generics.ListCreateAPIView):
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serializer_class = CommentSerializer
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model = Comment
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class TestCreateModelWithAutoNowAddField(TestCase):
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def setUp(self):
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self.objects = Comment.objects
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self.view = CommentView.as_view()
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def test_create_model_with_auto_now_add_field(self):
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"""
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Regression test for #285
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https://github.com/encode/django-rest-framework/issues/285
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"""
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data = {'email': 'foobar@example.com', 'content': 'foobar'}
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request = factory.post('/', data, format='json')
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response = self.view(request).render()
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assert response.status_code == status.HTTP_201_CREATED
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created = self.objects.get(id=1)
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assert created.content == 'foobar'
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# Test for particularly ugly regression with m2m in browsable API
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class ClassB(models.Model):
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name = models.CharField(max_length=255)
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class ClassA(models.Model):
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name = models.CharField(max_length=255)
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children = models.ManyToManyField(ClassB, blank=True, null=True)
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class ClassASerializer(serializers.ModelSerializer):
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children = serializers.PrimaryKeyRelatedField(
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many=True, queryset=ClassB.objects.all()
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)
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class Meta:
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model = ClassA
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fields = '__all__'
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class ExampleView(generics.ListCreateAPIView):
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serializer_class = ClassASerializer
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queryset = ClassA.objects.all()
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class TestM2MBrowsableAPI(TestCase):
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def test_m2m_in_browsable_api(self):
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"""
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Test for particularly ugly regression with m2m in browsable API
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"""
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request = factory.get('/', HTTP_ACCEPT='text/html')
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view = ExampleView().as_view()
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response = view(request).render()
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assert response.status_code == status.HTTP_200_OK
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class InclusiveFilterBackend:
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def filter_queryset(self, request, queryset, view):
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return queryset.filter(text='foo')
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class ExclusiveFilterBackend:
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def filter_queryset(self, request, queryset, view):
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return queryset.filter(text='other')
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class TwoFieldModel(models.Model):
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field_a = models.CharField(max_length=100)
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field_b = models.CharField(max_length=100)
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class DynamicSerializerView(generics.ListCreateAPIView):
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queryset = TwoFieldModel.objects.all()
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renderer_classes = (renderers.BrowsableAPIRenderer, renderers.JSONRenderer)
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def get_serializer_class(self):
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if self.request.method == 'POST':
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class DynamicSerializer(serializers.ModelSerializer):
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class Meta:
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model = TwoFieldModel
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fields = ('field_b',)
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else:
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class DynamicSerializer(serializers.ModelSerializer):
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class Meta:
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model = TwoFieldModel
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fields = '__all__'
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return DynamicSerializer
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class TestFilterBackendAppliedToViews(TestCase):
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def setUp(self):
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"""
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Create 3 BasicModel instances to filter on.
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"""
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items = ['foo', 'bar', 'baz']
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for item in items:
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BasicModel(text=item).save()
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self.objects = BasicModel.objects
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self.data = [
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{'id': obj.id, 'text': obj.text}
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for obj in self.objects.all()
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]
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def test_get_root_view_filters_by_name_with_filter_backend(self):
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"""
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GET requests to ListCreateAPIView should return filtered list.
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"""
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root_view = RootView.as_view(filter_backends=(InclusiveFilterBackend,))
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request = factory.get('/')
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response = root_view(request).render()
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assert response.status_code == status.HTTP_200_OK
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assert len(response.data) == 1
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assert response.data == [{'id': 1, 'text': 'foo'}]
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def test_get_root_view_filters_out_all_models_with_exclusive_filter_backend(self):
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"""
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GET requests to ListCreateAPIView should return empty list when all models are filtered out.
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"""
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root_view = RootView.as_view(filter_backends=(ExclusiveFilterBackend,))
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request = factory.get('/')
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response = root_view(request).render()
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assert response.status_code == status.HTTP_200_OK
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assert response.data == []
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def test_get_instance_view_filters_out_name_with_filter_backend(self):
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"""
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GET requests to RetrieveUpdateDestroyAPIView should raise 404 when model filtered out.
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"""
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instance_view = InstanceView.as_view(filter_backends=(ExclusiveFilterBackend,))
|
|
request = factory.get('/1')
|
|
response = instance_view(request, pk=1).render()
|
|
assert response.status_code == status.HTTP_404_NOT_FOUND
|
|
assert response.data == {
|
|
'detail': ErrorDetail(
|
|
string='No BasicModel matches the given query.',
|
|
code='not_found'
|
|
)
|
|
}
|
|
|
|
def test_get_instance_view_will_return_single_object_when_filter_does_not_exclude_it(self):
|
|
"""
|
|
GET requests to RetrieveUpdateDestroyAPIView should return a single object when not excluded
|
|
"""
|
|
instance_view = InstanceView.as_view(filter_backends=(InclusiveFilterBackend,))
|
|
request = factory.get('/1')
|
|
response = instance_view(request, pk=1).render()
|
|
assert response.status_code == status.HTTP_200_OK
|
|
assert response.data == {'id': 1, 'text': 'foo'}
|
|
|
|
def test_dynamic_serializer_form_in_browsable_api(self):
|
|
"""
|
|
GET requests to ListCreateAPIView should return filtered list.
|
|
"""
|
|
view = DynamicSerializerView.as_view()
|
|
request = factory.get('/')
|
|
response = view(request).render()
|
|
content = response.content.decode()
|
|
assert 'field_b' in content
|
|
assert 'field_a' not in content
|
|
|
|
|
|
class TestGuardedQueryset(TestCase):
|
|
def test_guarded_queryset(self):
|
|
class QuerysetAccessError(generics.ListAPIView):
|
|
queryset = BasicModel.objects.all()
|
|
|
|
def get(self, request):
|
|
return Response(list(self.queryset))
|
|
|
|
view = QuerysetAccessError.as_view()
|
|
request = factory.get('/')
|
|
with pytest.raises(RuntimeError):
|
|
view(request).render()
|
|
|
|
|
|
class ApiViewsTests(TestCase):
|
|
|
|
def test_create_api_view_post(self):
|
|
class MockCreateApiView(generics.CreateAPIView):
|
|
def create(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockCreateApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.post('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_destroy_api_view_delete(self):
|
|
class MockDestroyApiView(generics.DestroyAPIView):
|
|
def destroy(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockDestroyApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.delete('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_update_api_view_partial_update(self):
|
|
class MockUpdateApiView(generics.UpdateAPIView):
|
|
def partial_update(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockUpdateApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.patch('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_retrieve_update_api_view_get(self):
|
|
class MockRetrieveUpdateApiView(generics.RetrieveUpdateAPIView):
|
|
def retrieve(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockRetrieveUpdateApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.get('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_retrieve_update_api_view_put(self):
|
|
class MockRetrieveUpdateApiView(generics.RetrieveUpdateAPIView):
|
|
def update(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockRetrieveUpdateApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.put('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_retrieve_update_api_view_patch(self):
|
|
class MockRetrieveUpdateApiView(generics.RetrieveUpdateAPIView):
|
|
def partial_update(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockRetrieveUpdateApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.patch('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_retrieve_destroy_api_view_get(self):
|
|
class MockRetrieveDestroyUApiView(generics.RetrieveDestroyAPIView):
|
|
def retrieve(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockRetrieveDestroyUApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.get('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
def test_retrieve_destroy_api_view_delete(self):
|
|
class MockRetrieveDestroyUApiView(generics.RetrieveDestroyAPIView):
|
|
def destroy(self, request, *args, **kwargs):
|
|
self.called = True
|
|
self.call_args = (request, args, kwargs)
|
|
view = MockRetrieveDestroyUApiView()
|
|
data = ('test request', ('test arg',), {'test_kwarg': 'test'})
|
|
view.delete('test request', 'test arg', test_kwarg='test')
|
|
assert view.called is True
|
|
assert view.call_args == data
|
|
|
|
|
|
class GetObjectOr404Tests(TestCase):
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.uuid_object = UUIDForeignKeyTarget.objects.create(name='bar')
|
|
|
|
def test_get_object_or_404_with_valid_uuid(self):
|
|
obj = generics.get_object_or_404(
|
|
UUIDForeignKeyTarget, pk=self.uuid_object.pk
|
|
)
|
|
assert obj == self.uuid_object
|
|
|
|
def test_get_object_or_404_with_invalid_string_for_uuid(self):
|
|
with pytest.raises(Http404):
|
|
generics.get_object_or_404(UUIDForeignKeyTarget, pk='not-a-uuid')
|
|
|
|
|
|
class TestSerializer(TestCase):
|
|
|
|
def test_serializer_class_not_provided(self):
|
|
class NoSerializerClass(generics.GenericAPIView):
|
|
pass
|
|
|
|
with pytest.raises(AssertionError) as excinfo:
|
|
NoSerializerClass().get_serializer_class()
|
|
|
|
assert str(excinfo.value) == (
|
|
"'NoSerializerClass' should either include a `serializer_class` "
|
|
"attribute, or override the `get_serializer_class()` method.")
|
|
|
|
def test_given_context_not_overridden(self):
|
|
context = object()
|
|
|
|
class View(generics.ListAPIView):
|
|
serializer_class = serializers.Serializer
|
|
|
|
def list(self, request):
|
|
response = Response()
|
|
response.serializer = self.get_serializer(context=context)
|
|
return response
|
|
|
|
response = View.as_view()(factory.get('/'))
|
|
serializer = response.serializer
|
|
|
|
assert serializer.context is context
|