OpenStack Database As A Service (Trove)
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trove/trove/tests/unittests/common/test_pagination.py

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# Copyright 2013 OpenStack Foundation
# Copyright 2013 Rackspace Hosting
# Copyright 2013 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
from trove.common import pagination
from trove.tests.unittests import trove_testtools
class TestPaginatedDataView(trove_testtools.TestCase):
def test_creation_with_string_marker(self):
view = pagination.PaginatedDataView("TestType", [],
"http://current_page",
next_page_marker="marker")
self.assertEqual("marker", view.next_page_marker)
def test_creation_with_none_marker(self):
view = pagination.PaginatedDataView("TestType", [],
"http://current_page",
next_page_marker=None)
self.assertIsNone(view.next_page_marker)
def test_creation_with_none_string_marker(self):
view = pagination.PaginatedDataView("TestType", [],
"http://current_page",
next_page_marker=52)
self.assertEqual("52", view.next_page_marker)
def _do_paginate_list(self, limit=None, marker=None, include_marker=False):
li = ['a', 'b', 'c', 'd', 'e']
return pagination.paginate_list(li, limit, marker, include_marker)
def test_paginate_list(self):
# start list
li_1, marker_1 = self._do_paginate_list(limit=2)
self.assertEqual(['a', 'b'], li_1)
self.assertEqual('c', marker_1)
# continue list, do not include marker in result
li_2, marker_2 = self._do_paginate_list(limit=2, marker=marker_1)
self.assertEqual(['d', 'e'], li_2)
self.assertIsNone(marker_2)
# alternate continue list, include marker in result
li_3, marker_3 = self._do_paginate_list(limit=2, marker=marker_1,
include_marker=True)
self.assertEqual(['c', 'd'], li_3)
self.assertEqual('e', marker_3)
# bad marker
li_4, marker_4 = self._do_paginate_list(marker='f')
self.assertEqual([], li_4)
self.assertIsNone(marker_4)