134 lines
5.2 KiB
Python
134 lines
5.2 KiB
Python
from __future__ import absolute_import, unicode_literals
|
|
|
|
from datetime import datetime
|
|
|
|
from django.core.paginator import Paginator, InvalidPage, EmptyPage
|
|
from django.test import TestCase
|
|
|
|
from .models import Article
|
|
|
|
|
|
class CountContainer(object):
|
|
def count(self):
|
|
return 42
|
|
|
|
class LenContainer(object):
|
|
def __len__(self):
|
|
return 42
|
|
|
|
class PaginationTests(TestCase):
|
|
def setUp(self):
|
|
# Prepare a list of objects for pagination.
|
|
for x in range(1, 10):
|
|
a = Article(headline='Article %s' % x, pub_date=datetime(2005, 7, 29))
|
|
a.save()
|
|
|
|
def test_paginator(self):
|
|
paginator = Paginator(Article.objects.all(), 5)
|
|
self.assertEqual(9, paginator.count)
|
|
self.assertEqual(2, paginator.num_pages)
|
|
self.assertEqual([1, 2], paginator.page_range)
|
|
|
|
def test_first_page(self):
|
|
paginator = Paginator(Article.objects.all(), 5)
|
|
p = paginator.page(1)
|
|
self.assertEqual("<Page 1 of 2>", unicode(p))
|
|
self.assertQuerysetEqual(p.object_list, [
|
|
"<Article: Article 1>",
|
|
"<Article: Article 2>",
|
|
"<Article: Article 3>",
|
|
"<Article: Article 4>",
|
|
"<Article: Article 5>"
|
|
]
|
|
)
|
|
self.assertTrue(p.has_next())
|
|
self.assertFalse(p.has_previous())
|
|
self.assertTrue(p.has_other_pages())
|
|
self.assertEqual(2, p.next_page_number())
|
|
self.assertRaises(InvalidPage, p.previous_page_number)
|
|
self.assertEqual(1, p.start_index())
|
|
self.assertEqual(5, p.end_index())
|
|
|
|
def test_last_page(self):
|
|
paginator = Paginator(Article.objects.all(), 5)
|
|
p = paginator.page(2)
|
|
self.assertEqual("<Page 2 of 2>", unicode(p))
|
|
self.assertQuerysetEqual(p.object_list, [
|
|
"<Article: Article 6>",
|
|
"<Article: Article 7>",
|
|
"<Article: Article 8>",
|
|
"<Article: Article 9>"
|
|
]
|
|
)
|
|
self.assertFalse(p.has_next())
|
|
self.assertTrue(p.has_previous())
|
|
self.assertTrue(p.has_other_pages())
|
|
self.assertRaises(InvalidPage, p.next_page_number)
|
|
self.assertEqual(1, p.previous_page_number())
|
|
self.assertEqual(6, p.start_index())
|
|
self.assertEqual(9, p.end_index())
|
|
|
|
def test_empty_page(self):
|
|
paginator = Paginator(Article.objects.all(), 5)
|
|
self.assertRaises(EmptyPage, paginator.page, 0)
|
|
self.assertRaises(EmptyPage, paginator.page, 3)
|
|
|
|
# Empty paginators with allow_empty_first_page=True.
|
|
paginator = Paginator(Article.objects.filter(id=0), 5, allow_empty_first_page=True)
|
|
self.assertEqual(0, paginator.count)
|
|
self.assertEqual(1, paginator.num_pages)
|
|
self.assertEqual([1], paginator.page_range)
|
|
|
|
# Empty paginators with allow_empty_first_page=False.
|
|
paginator = Paginator(Article.objects.filter(id=0), 5, allow_empty_first_page=False)
|
|
self.assertEqual(0, paginator.count)
|
|
self.assertEqual(0, paginator.num_pages)
|
|
self.assertEqual([], paginator.page_range)
|
|
|
|
def test_invalid_page(self):
|
|
paginator = Paginator(Article.objects.all(), 5)
|
|
self.assertRaises(InvalidPage, paginator.page, 7)
|
|
|
|
def test_orphans(self):
|
|
# Add a few more records to test out the orphans feature.
|
|
for x in range(10, 13):
|
|
Article(headline="Article %s" % x, pub_date=datetime(2006, 10, 6)).save()
|
|
|
|
# With orphans set to 3 and 10 items per page, we should get all 12 items on a single page.
|
|
paginator = Paginator(Article.objects.all(), 10, orphans=3)
|
|
self.assertEqual(1, paginator.num_pages)
|
|
|
|
# With orphans only set to 1, we should get two pages.
|
|
paginator = Paginator(Article.objects.all(), 10, orphans=1)
|
|
self.assertEqual(2, paginator.num_pages)
|
|
|
|
def test_paginate_list(self):
|
|
# Paginators work with regular lists/tuples, too -- not just with QuerySets.
|
|
paginator = Paginator([1, 2, 3, 4, 5, 6, 7, 8, 9], 3)
|
|
self.assertEqual(9, paginator.count)
|
|
self.assertEqual(3, paginator.num_pages)
|
|
self.assertEqual([1, 2, 3], paginator.page_range)
|
|
p = paginator.page(2)
|
|
self.assertEqual("<Page 2 of 3>", unicode(p))
|
|
self.assertEqual([4, 5, 6], p.object_list)
|
|
self.assertTrue(p.has_next())
|
|
self.assertTrue(p.has_previous())
|
|
self.assertTrue(p.has_other_pages())
|
|
self.assertEqual(3, p.next_page_number())
|
|
self.assertEqual(1, p.previous_page_number())
|
|
self.assertEqual(4, p.start_index())
|
|
self.assertEqual(6, p.end_index())
|
|
|
|
def test_paginate_misc_classes(self):
|
|
# Paginator can be passed other objects with a count() method.
|
|
paginator = Paginator(CountContainer(), 10)
|
|
self.assertEqual(42, paginator.count)
|
|
self.assertEqual(5, paginator.num_pages)
|
|
self.assertEqual([1, 2, 3, 4, 5], paginator.page_range)
|
|
|
|
# Paginator can be passed other objects that implement __len__.
|
|
paginator = Paginator(LenContainer(), 10)
|
|
self.assertEqual(42, paginator.count)
|
|
self.assertEqual(5, paginator.num_pages)
|
|
self.assertEqual([1, 2, 3, 4, 5], paginator.page_range)
|