87 lines
2.8 KiB
Python
87 lines
2.8 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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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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import mock
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from twisted.internet import defer
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from synapse.util.caches import descriptors
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from tests import unittest
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class DescriptorTestCase(unittest.TestCase):
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@defer.inlineCallbacks
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def test_cache(self):
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class Cls(object):
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def __init__(self):
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self.mock = mock.Mock()
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@descriptors.cached()
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def fn(self, arg1, arg2):
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return self.mock(arg1, arg2)
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obj = Cls()
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obj.mock.return_value = 'fish'
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r = yield obj.fn(1, 2)
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self.assertEqual(r, 'fish')
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obj.mock.assert_called_once_with(1, 2)
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obj.mock.reset_mock()
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# a call with different params should call the mock again
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obj.mock.return_value = 'chips'
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r = yield obj.fn(1, 3)
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self.assertEqual(r, 'chips')
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obj.mock.assert_called_once_with(1, 3)
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obj.mock.reset_mock()
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# the two values should now be cached
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r = yield obj.fn(1, 2)
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self.assertEqual(r, 'fish')
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r = yield obj.fn(1, 3)
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self.assertEqual(r, 'chips')
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obj.mock.assert_not_called()
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@defer.inlineCallbacks
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def test_cache_num_args(self):
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"""Only the first num_args arguments should matter to the cache"""
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class Cls(object):
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def __init__(self):
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self.mock = mock.Mock()
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@descriptors.cached(num_args=1)
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def fn(self, arg1, arg2):
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return self.mock(arg1, arg2)
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obj = Cls()
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obj.mock.return_value = 'fish'
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r = yield obj.fn(1, 2)
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self.assertEqual(r, 'fish')
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obj.mock.assert_called_once_with(1, 2)
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obj.mock.reset_mock()
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# a call with different params should call the mock again
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obj.mock.return_value = 'chips'
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r = yield obj.fn(2, 3)
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self.assertEqual(r, 'chips')
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obj.mock.assert_called_once_with(2, 3)
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obj.mock.reset_mock()
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# the two values should now be cached; we should be able to vary
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# the second argument and still get the cached result.
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r = yield obj.fn(1, 4)
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self.assertEqual(r, 'fish')
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r = yield obj.fn(2, 5)
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self.assertEqual(r, 'chips')
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obj.mock.assert_not_called()
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