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import datetime
from decimal import Decimal
from django.core.paginator import Paginator
from django.test import TestCase
from django.test.client import RequestFactory
from django.utils import unittest
from rest_framework import generics, status, pagination, filters
from rest_framework.compat import django_filters
from rest_framework.tests.models import BasicModel, FilterableItem
factory = RequestFactory()
class RootView(generics.ListCreateAPIView):
"""
Example description for OPTIONS.
"""
model = BasicModel
paginate_by = 10
if django_filters:
class DecimalFilter(django_filters.FilterSet):
decimal = django_filters.NumberFilter(lookup_type='lt')
class Meta:
model = FilterableItem
fields = ['text', 'decimal', 'date']
class FilterFieldsRootView(generics.ListCreateAPIView):
model = FilterableItem
paginate_by = 10
filter_class = DecimalFilter
filter_backend = filters.DjangoFilterBackend
class IntegrationTestPagination(TestCase):
"""
Integration tests for paginated list views.
"""
def setUp(self):
"""
Create 26 BasicModel instances.
"""
for char in 'abcdefghijklmnopqrstuvwxyz':
BasicModel(text=char * 3).save()
self.objects = BasicModel.objects
self.data = [
{'id': obj.id, 'text': obj.text}
for obj in self.objects.all()
]
self.view = RootView.as_view()
def test_get_paginated_root_view(self):
"""
GET requests to paginated ListCreateAPIView should return paginated results.
"""
request = factory.get('/')
response = self.view(request).render()
self.assertEquals(response.status_code, status.HTTP_200_OK)
self.assertEquals(response.data['count'], 26)
self.assertEquals(response.data['results'], self.data[:10])
self.assertNotEquals(response.data['next'], None)
self.assertEquals(response.data['previous'], None)
request = factory.get(response.data['next'])
response = self.view(request).render()
self.assertEquals(response.status_code, status.HTTP_200_OK)
self.assertEquals(response.data['count'], 26)
self.assertEquals(response.data['results'], self.data[10:20])
self.assertNotEquals(response.data['next'], None)
self.assertNotEquals(response.data['previous'], None)
request = factory.get(response.data['next'])
response = self.view(request).render()
self.assertEquals(response.status_code, status.HTTP_200_OK)
self.assertEquals(response.data['count'], 26)
self.assertEquals(response.data['results'], self.data[20:])
self.assertEquals(response.data['next'], None)
self.assertNotEquals(response.data['previous'], None)
class IntegrationTestPaginationAndFiltering(TestCase):
def setUp(self):
"""
Create 50 FilterableItem instances.
"""
base_data = ('a', Decimal('0.25'), datetime.date(2012, 10, 8))
for i in range(26):
text = chr(i + ord(base_data[0])) * 3 # Produces string 'aaa', 'bbb', etc.
decimal = base_data[1] + i
date = base_data[2] - datetime.timedelta(days=i * 2)
FilterableItem(text=text, decimal=decimal, date=date).save()
self.objects = FilterableItem.objects
self.data = [
{'id': obj.id, 'text': obj.text, 'decimal': obj.decimal, 'date': obj.date}
for obj in self.objects.all()
]
self.view = FilterFieldsRootView.as_view()
@unittest.skipUnless(django_filters, 'django-filters not installed')
def test_get_paginated_filtered_root_view(self):
"""
GET requests to paginated filtered ListCreateAPIView should return
paginated results. The next and previous links should preserve the
filtered parameters.
"""
request = factory.get('/?decimal=15.20')
response = self.view(request).render()
self.assertEquals(response.status_code, status.HTTP_200_OK)
self.assertEquals(response.data['count'], 15)
self.assertEquals(response.data['results'], self.data[:10])
self.assertNotEquals(response.data['next'], None)
self.assertEquals(response.data['previous'], None)
request = factory.get(response.data['next'])
response = self.view(request).render()
self.assertEquals(response.status_code, status.HTTP_200_OK)
self.assertEquals(response.data['count'], 15)
self.assertEquals(response.data['results'], self.data[10:15])
self.assertEquals(response.data['next'], None)
self.assertNotEquals(response.data['previous'], None)
request = factory.get(response.data['previous'])
response = self.view(request).render()
self.assertEquals(response.status_code, status.HTTP_200_OK)
self.assertEquals(response.data['count'], 15)
self.assertEquals(response.data['results'], self.data[:10])
self.assertNotEquals(response.data['next'], None)
self.assertEquals(response.data['previous'], None)
class UnitTestPagination(TestCase):
"""
Unit tests for pagination of primative objects.
"""
def setUp(self):
self.objects = [char * 3 for char in 'abcdefghijklmnopqrstuvwxyz']
paginator = Paginator(self.objects, 10)
self.first_page = paginator.page(1)
self.last_page = paginator.page(3)
def test_native_pagination(self):
serializer = pagination.PaginationSerializer(self.first_page)
self.assertEquals(serializer.data['count'], 26)
self.assertEquals(serializer.data['next'], '?page=2')
self.assertEquals(serializer.data['previous'], None)
self.assertEquals(serializer.data['results'], self.objects[:10])
serializer = pagination.PaginationSerializer(self.last_page)
self.assertEquals(serializer.data['count'], 26)
self.assertEquals(serializer.data['next'], None)
self.assertEquals(serializer.data['previous'], '?page=2')
self.assertEquals(serializer.data['results'], self.objects[20:])
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