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# Copyright (C) 2013-2016 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""paginate helper tests."""
import unittest
from falcon import HTTPInvalidParam, Request
from mailman.app.lifecycle import create_list
from mailman.database.transaction import transaction
from mailman.rest.helpers import CollectionMixin
from mailman.testing.layers import RESTLayer
class _FakeRequest(Request):
def __init__(self, count=None, page=None):
self._params = {}
if count is not None:
self._params['count'] = count
if page is not None:
self._params['page'] = page
class TestPaginateHelper(unittest.TestCase):
"""Test the @paginate decorator."""
layer = RESTLayer
def setUp(self):
with transaction():
self._mlist = create_list('test@example.com')
def _get_resource(self):
class Resource(CollectionMixin):
def _get_collection(self, request):
return ['one', 'two', 'three', 'four', 'five']
def _resource_as_dict(self, res): # noqa
return {'value': res}
return Resource()
def test_no_pagination(self):
# When there is no pagination params in the request, all 5 items in
# the collection are returned.
resource = self._get_resource()
# Expect 5 items
page = resource._make_collection(_FakeRequest())
self.assertEqual(page['start'], 0)
self.assertEqual(page['total_size'], 5)
self.assertEqual(
[entry['value'] for entry in page['entries']],
['one', 'two', 'three', 'four', 'five'])
def test_valid_pagination_request_page_one(self):
# ?count=2&page=1 returns the first page, with two items in it.
resource = self._get_resource()
page = resource._make_collection(_FakeRequest(2, 1))
self.assertEqual(page['start'], 0)
self.assertEqual(page['total_size'], 5)
self.assertEqual(
[entry['value'] for entry in page['entries']], ['one', 'two'])
def test_valid_pagination_request_page_two(self):
# ?count=2&page=2 returns the second page, where a page has two items
# in it.
resource = self._get_resource()
page = resource._make_collection(_FakeRequest(2, 2))
self.assertEqual(page['start'], 2)
self.assertEqual(page['total_size'], 5)
self.assertEqual(
[entry['value'] for entry in page['entries']], ['three', 'four'])
def test_2nd_index_larger_than_total(self):
# ?count=2&page=3 returns the third page with page size 2, but the
# last page only has one item in it.
resource = self._get_resource()
page = resource._make_collection(_FakeRequest(2, 3))
self.assertEqual(page['start'], 4)
self.assertEqual(page['total_size'], 5)
self.assertEqual(
[entry['value'] for entry in page['entries']], ['five'])
def test_out_of_range_returns_empty_list(self):
# ?count=2&page=4 returns the fourth page, which doesn't exist, so an
# empty collection is returned.
resource = self._get_resource()
page = resource._make_collection(_FakeRequest(2, 4))
self.assertEqual(page['start'], 6)
self.assertEqual(page['total_size'], 5)
self.assertNotIn('entries', page)
def test_count_as_string_returns_bad_request(self):
# ?count=two&page=2 are not valid values, so a bad request occurs.
resource = self._get_resource()
self.assertRaises(HTTPInvalidParam, resource._make_collection,
_FakeRequest('two', 1))
def test_negative_count(self):
# ?count=-1&page=1
resource = self._get_resource()
self.assertRaises(HTTPInvalidParam, resource._make_collection,
_FakeRequest(-1, 1))
def test_negative_page(self):
# ?count=1&page=-1
resource = self._get_resource()
self.assertRaises(HTTPInvalidParam, resource._make_collection,
_FakeRequest(1, -1))
def test_negative_page_and_count(self):
# ?count=1&page=-1
resource = self._get_resource()
self.assertRaises(HTTPInvalidParam, resource._make_collection,
_FakeRequest(-1, -1))
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