190 lines
7.9 KiB
Python
190 lines
7.9 KiB
Python
# Copyright 2013-2017 DataStax, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from cassandra.query import named_tuple_factory, dict_factory, tuple_factory
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try:
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import unittest2 as unittest
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except ImportError:
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import unittest # noqa
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from mock import Mock, PropertyMock
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from cassandra.cluster import ResultSet
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class ResultSetTests(unittest.TestCase):
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def test_iter_non_paged(self):
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expected = list(range(10))
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rs = ResultSet(Mock(has_more_pages=False), expected)
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itr = iter(rs)
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self.assertListEqual(list(itr), expected)
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def test_iter_paged(self):
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expected = list(range(10))
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response_future = Mock(has_more_pages=True)
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response_future.result.side_effect = (ResultSet(Mock(), expected[-5:]), ) # ResultSet is iterable, so it must be protected in order to be returned whole by the Mock
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rs = ResultSet(response_future, expected[:5])
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itr = iter(rs)
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# this is brittle, depends on internal impl details. Would like to find a better way
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type(response_future).has_more_pages = PropertyMock(side_effect=(True, True, False)) # after init to avoid side effects being consumed by init
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self.assertListEqual(list(itr), expected)
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def test_list_non_paged(self):
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# list access on RS for backwards-compatibility
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expected = list(range(10))
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rs = ResultSet(Mock(has_more_pages=False), expected)
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for i in range(10):
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self.assertEqual(rs[i], expected[i])
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self.assertEqual(list(rs), expected)
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def test_list_paged(self):
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# list access on RS for backwards-compatibility
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expected = list(range(10))
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response_future = Mock(has_more_pages=True)
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response_future.result.side_effect = (ResultSet(Mock(), expected[-5:]), ) # ResultSet is iterable, so it must be protected in order to be returned whole by the Mock
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rs = ResultSet(response_future, expected[:5])
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# this is brittle, depends on internal impl details. Would like to find a better way
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type(response_future).has_more_pages = PropertyMock(side_effect=(True, True, True, False)) # First two True are consumed on check entering list mode
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self.assertEqual(rs[9], expected[9])
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self.assertEqual(list(rs), expected)
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def test_has_more_pages(self):
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response_future = Mock()
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response_future.has_more_pages.side_effect = PropertyMock(side_effect=(True, False))
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rs = ResultSet(response_future, [])
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type(response_future).has_more_pages = PropertyMock(side_effect=(True, False)) # after init to avoid side effects being consumed by init
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self.assertTrue(rs.has_more_pages)
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self.assertFalse(rs.has_more_pages)
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def test_iterate_then_index(self):
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# RuntimeError if indexing with no pages
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expected = list(range(10))
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rs = ResultSet(Mock(has_more_pages=False), expected)
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itr = iter(rs)
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# before consuming
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with self.assertRaises(RuntimeError):
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rs[0]
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list(itr)
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# after consuming
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with self.assertRaises(RuntimeError):
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rs[0]
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self.assertFalse(rs)
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self.assertFalse(list(rs))
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# RuntimeError if indexing during or after pages
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response_future = Mock(has_more_pages=True)
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response_future.result.side_effect = (ResultSet(Mock(), expected[-5:]), ) # ResultSet is iterable, so it must be protected in order to be returned whole by the Mock
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rs = ResultSet(response_future, expected[:5])
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type(response_future).has_more_pages = PropertyMock(side_effect=(True, False))
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itr = iter(rs)
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# before consuming
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with self.assertRaises(RuntimeError):
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rs[0]
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for row in itr:
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# while consuming
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with self.assertRaises(RuntimeError):
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rs[0]
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# after consuming
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with self.assertRaises(RuntimeError):
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rs[0]
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self.assertFalse(rs)
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self.assertFalse(list(rs))
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def test_index_list_mode(self):
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# no pages
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expected = list(range(10))
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rs = ResultSet(Mock(has_more_pages=False), expected)
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# index access before iteration causes list to be materialized
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self.assertEqual(rs[0], expected[0])
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# resusable iteration
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self.assertListEqual(list(rs), expected)
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self.assertListEqual(list(rs), expected)
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self.assertTrue(rs)
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# pages
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response_future = Mock(has_more_pages=True)
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response_future.result.side_effect = (ResultSet(Mock(), expected[-5:]), ) # ResultSet is iterable, so it must be protected in order to be returned whole by the Mock
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rs = ResultSet(response_future, expected[:5])
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# this is brittle, depends on internal impl details. Would like to find a better way
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type(response_future).has_more_pages = PropertyMock(side_effect=(True, True, True, False)) # First two True are consumed on check entering list mode
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# index access before iteration causes list to be materialized
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self.assertEqual(rs[0], expected[0])
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self.assertEqual(rs[9], expected[9])
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# resusable iteration
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self.assertListEqual(list(rs), expected)
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self.assertListEqual(list(rs), expected)
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self.assertTrue(rs)
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def test_eq(self):
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# no pages
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expected = list(range(10))
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rs = ResultSet(Mock(has_more_pages=False), expected)
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# eq before iteration causes list to be materialized
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self.assertEqual(rs, expected)
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# results can be iterated or indexed once we're materialized
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self.assertListEqual(list(rs), expected)
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self.assertEqual(rs[9], expected[9])
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self.assertTrue(rs)
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# pages
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response_future = Mock(has_more_pages=True)
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response_future.result.side_effect = (ResultSet(Mock(), expected[-5:]), ) # ResultSet is iterable, so it must be protected in order to be returned whole by the Mock
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rs = ResultSet(response_future, expected[:5])
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type(response_future).has_more_pages = PropertyMock(side_effect=(True, True, True, False))
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# eq before iteration causes list to be materialized
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self.assertEqual(rs, expected)
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# results can be iterated or indexed once we're materialized
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self.assertListEqual(list(rs), expected)
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self.assertEqual(rs[9], expected[9])
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self.assertTrue(rs)
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def test_bool(self):
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self.assertFalse(ResultSet(Mock(has_more_pages=False), []))
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self.assertTrue(ResultSet(Mock(has_more_pages=False), [1]))
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def test_was_applied(self):
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# unknown row factory raises
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with self.assertRaises(RuntimeError):
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ResultSet(Mock(), []).was_applied
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response_future = Mock(row_factory=named_tuple_factory)
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# no row
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with self.assertRaises(RuntimeError):
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ResultSet(response_future, []).was_applied
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# too many rows
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with self.assertRaises(RuntimeError):
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ResultSet(response_future, [tuple(), tuple()]).was_applied
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# various internal row factories
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for row_factory in (named_tuple_factory, tuple_factory):
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for applied in (True, False):
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rs = ResultSet(Mock(row_factory=row_factory), [(applied,)])
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self.assertEqual(rs.was_applied, applied)
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row_factory = dict_factory
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for applied in (True, False):
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rs = ResultSet(Mock(row_factory=row_factory), [{'[applied]': applied}])
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self.assertEqual(rs.was_applied, applied)
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