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https://github.com/encode/django-rest-framework.git
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340 lines
12 KiB
Python
340 lines
12 KiB
Python
from __future__ import unicode_literals
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import datetime
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from decimal import Decimal
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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 generics, serializers, status, filters
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from rest_framework.compat import django_filters
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from rest_framework.test import APIRequestFactory
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from .models import BasicModel, FilterableItem
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factory = APIRequestFactory()
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# Helper function to split arguments out of an url
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def split_arguments_from_url(url):
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if '?' not in url:
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return url
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path, args = url.split('?')
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args = dict(r.split('=') for r in args.split('&'))
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return path, args
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class BasicSerializer(serializers.ModelSerializer):
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class Meta:
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model = BasicModel
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class FilterableItemSerializer(serializers.ModelSerializer):
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class Meta:
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model = FilterableItem
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class RootView(generics.ListCreateAPIView):
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"""
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Example description for OPTIONS.
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"""
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queryset = BasicModel.objects.all()
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serializer_class = BasicSerializer
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paginate_by = 10
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class DefaultPageSizeKwargView(generics.ListAPIView):
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"""
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View for testing default paginate_by_param usage
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"""
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queryset = BasicModel.objects.all()
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serializer_class = BasicSerializer
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class PaginateByParamView(generics.ListAPIView):
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"""
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View for testing custom paginate_by_param usage
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"""
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queryset = BasicModel.objects.all()
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serializer_class = BasicSerializer
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paginate_by_param = 'page_size'
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class MaxPaginateByView(generics.ListAPIView):
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"""
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View for testing custom max_paginate_by usage
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"""
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queryset = BasicModel.objects.all()
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serializer_class = BasicSerializer
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paginate_by = 3
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max_paginate_by = 5
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paginate_by_param = 'page_size'
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class IntegrationTestPagination(TestCase):
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"""
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Integration tests for paginated list views.
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"""
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def setUp(self):
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"""
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Create 26 BasicModel instances.
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"""
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for char in 'abcdefghijklmnopqrstuvwxyz':
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BasicModel(text=char * 3).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_paginated_root_view(self):
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"""
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GET requests to paginated ListCreateAPIView should return paginated results.
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"""
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request = factory.get('/')
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# Note: Database queries are a `SELECT COUNT`, and `SELECT <fields>`
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with self.assertNumQueries(2):
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response = self.view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 26)
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self.assertEqual(response.data['results'], self.data[:10])
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self.assertNotEqual(response.data['next'], None)
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self.assertEqual(response.data['previous'], None)
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request = factory.get(*split_arguments_from_url(response.data['next']))
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with self.assertNumQueries(2):
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response = self.view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 26)
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self.assertEqual(response.data['results'], self.data[10:20])
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self.assertNotEqual(response.data['next'], None)
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self.assertNotEqual(response.data['previous'], None)
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request = factory.get(*split_arguments_from_url(response.data['next']))
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with self.assertNumQueries(2):
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response = self.view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 26)
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self.assertEqual(response.data['results'], self.data[20:])
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self.assertEqual(response.data['next'], None)
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self.assertNotEqual(response.data['previous'], None)
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class IntegrationTestPaginationAndFiltering(TestCase):
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def setUp(self):
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"""
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Create 50 FilterableItem instances.
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"""
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base_data = ('a', Decimal('0.25'), datetime.date(2012, 10, 8))
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for i in range(26):
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text = chr(i + ord(base_data[0])) * 3 # Produces string 'aaa', 'bbb', etc.
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decimal = base_data[1] + i
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date = base_data[2] - datetime.timedelta(days=i * 2)
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FilterableItem(text=text, decimal=decimal, date=date).save()
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self.objects = FilterableItem.objects
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self.data = [
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{'id': obj.id, 'text': obj.text, 'decimal': str(obj.decimal), 'date': obj.date.isoformat()}
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for obj in self.objects.all()
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]
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@unittest.skipUnless(django_filters, 'django-filter not installed')
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def test_get_django_filter_paginated_filtered_root_view(self):
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"""
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GET requests to paginated filtered ListCreateAPIView should return
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paginated results. The next and previous links should preserve the
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filtered parameters.
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"""
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class DecimalFilter(django_filters.FilterSet):
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decimal = django_filters.NumberFilter(lookup_type='lt')
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class Meta:
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model = FilterableItem
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fields = ['text', 'decimal', 'date']
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class FilterFieldsRootView(generics.ListCreateAPIView):
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queryset = FilterableItem.objects.all()
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serializer_class = FilterableItemSerializer
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paginate_by = 10
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filter_class = DecimalFilter
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filter_backends = (filters.DjangoFilterBackend,)
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view = FilterFieldsRootView.as_view()
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EXPECTED_NUM_QUERIES = 2
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request = factory.get('/', {'decimal': '15.20'})
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with self.assertNumQueries(EXPECTED_NUM_QUERIES):
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response = view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 15)
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self.assertEqual(response.data['results'], self.data[:10])
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self.assertNotEqual(response.data['next'], None)
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self.assertEqual(response.data['previous'], None)
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request = factory.get(*split_arguments_from_url(response.data['next']))
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with self.assertNumQueries(EXPECTED_NUM_QUERIES):
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response = view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 15)
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self.assertEqual(response.data['results'], self.data[10:15])
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self.assertEqual(response.data['next'], None)
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self.assertNotEqual(response.data['previous'], None)
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request = factory.get(*split_arguments_from_url(response.data['previous']))
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with self.assertNumQueries(EXPECTED_NUM_QUERIES):
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response = view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 15)
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self.assertEqual(response.data['results'], self.data[:10])
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self.assertNotEqual(response.data['next'], None)
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self.assertEqual(response.data['previous'], None)
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def test_get_basic_paginated_filtered_root_view(self):
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"""
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Same as `test_get_django_filter_paginated_filtered_root_view`,
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except using a custom filter backend instead of the django-filter
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backend,
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"""
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class DecimalFilterBackend(filters.BaseFilterBackend):
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def filter_queryset(self, request, queryset, view):
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return queryset.filter(decimal__lt=Decimal(request.GET['decimal']))
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class BasicFilterFieldsRootView(generics.ListCreateAPIView):
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queryset = FilterableItem.objects.all()
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serializer_class = FilterableItemSerializer
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paginate_by = 10
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filter_backends = (DecimalFilterBackend,)
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view = BasicFilterFieldsRootView.as_view()
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request = factory.get('/', {'decimal': '15.20'})
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with self.assertNumQueries(2):
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response = view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 15)
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self.assertEqual(response.data['results'], self.data[:10])
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self.assertNotEqual(response.data['next'], None)
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self.assertEqual(response.data['previous'], None)
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request = factory.get(*split_arguments_from_url(response.data['next']))
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with self.assertNumQueries(2):
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response = view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 15)
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self.assertEqual(response.data['results'], self.data[10:15])
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self.assertEqual(response.data['next'], None)
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self.assertNotEqual(response.data['previous'], None)
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request = factory.get(*split_arguments_from_url(response.data['previous']))
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with self.assertNumQueries(2):
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response = view(request).render()
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self.assertEqual(response.status_code, status.HTTP_200_OK)
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self.assertEqual(response.data['count'], 15)
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self.assertEqual(response.data['results'], self.data[:10])
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self.assertNotEqual(response.data['next'], None)
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self.assertEqual(response.data['previous'], None)
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class TestUnpaginated(TestCase):
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"""
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Tests for list views without pagination.
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"""
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def setUp(self):
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"""
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Create 13 BasicModel instances.
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"""
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for i in range(13):
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BasicModel(text=i).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 = DefaultPageSizeKwargView.as_view()
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def test_unpaginated(self):
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"""
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Tests the default page size for this view.
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no page size --> no limit --> no meta data
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"""
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request = factory.get('/')
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response = self.view(request)
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self.assertEqual(response.data, self.data)
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class TestCustomPaginateByParam(TestCase):
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"""
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Tests for list views with default page size kwarg
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"""
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def setUp(self):
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"""
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Create 13 BasicModel instances.
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"""
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for i in range(13):
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BasicModel(text=i).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 = PaginateByParamView.as_view()
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def test_default_page_size(self):
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"""
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Tests the default page size for this view.
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no page size --> no limit --> no meta data
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"""
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request = factory.get('/')
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response = self.view(request).render()
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self.assertEqual(response.data, self.data)
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def test_paginate_by_param(self):
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"""
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If paginate_by_param is set, the new kwarg should limit per view requests.
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"""
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request = factory.get('/', {'page_size': 5})
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response = self.view(request).render()
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self.assertEqual(response.data['count'], 13)
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self.assertEqual(response.data['results'], self.data[:5])
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class TestMaxPaginateByParam(TestCase):
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"""
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Tests for list views with max_paginate_by kwarg
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"""
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def setUp(self):
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"""
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Create 13 BasicModel instances.
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"""
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for i in range(13):
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BasicModel(text=i).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 = MaxPaginateByView.as_view()
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def test_max_paginate_by(self):
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"""
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If max_paginate_by is set, it should limit page size for the view.
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"""
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request = factory.get('/', data={'page_size': 10})
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response = self.view(request).render()
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self.assertEqual(response.data['count'], 13)
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self.assertEqual(response.data['results'], self.data[:5])
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def test_max_paginate_by_without_page_size_param(self):
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"""
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If max_paginate_by is set, but client does not specifiy page_size,
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standard `paginate_by` behavior should be used.
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"""
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request = factory.get('/')
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response = self.view(request).render()
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self.assertEqual(response.data['results'], self.data[:3])
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