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| # Licensed to the Apache Software Foundation (ASF) under one | |
| # or more contributor license agreements. See the NOTICE file | |
| # distributed with this work for additional information | |
| # regarding copyright ownership. The ASF licenses this file | |
| # to you 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 unittest.mock import MagicMock, patch | |
| from superset.common.utils.query_cache_manager import QueryCacheManager | |
| from superset.constants import CacheRegion | |
| class TestQueryCacheManagerGet: | |
| def test_get_cache_miss(self): | |
| """A regular cache miss returns an empty, non-loaded QueryCacheManager.""" | |
| mock_cache = MagicMock() | |
| mock_cache.get.return_value = None | |
| with patch( | |
| "superset.common.utils.query_cache_manager._cache", | |
| {CacheRegion.DEFAULT: mock_cache}, | |
| ): | |
| result = QueryCacheManager.get(key="some-key") | |
| assert result.is_loaded is False | |
| assert result.cache_value is None | |
| def test_get_cache_backend_error_fails_open(self): | |
| """ | |
| If the cache backend raises on read (e.g. a Redis connection or | |
| timeout error), QueryCacheManager.get() should not propagate the | |
| exception. It should behave exactly like a cache miss so callers | |
| fall back to querying live data. | |
| """ | |
| mock_cache = MagicMock() | |
| mock_cache.get.side_effect = ConnectionError("connection refused") | |
| with patch( | |
| "superset.common.utils.query_cache_manager._cache", | |
| {CacheRegion.DEFAULT: mock_cache}, | |
| ): | |
| result = QueryCacheManager.get(key="some-key") | |
| miss_result = QueryCacheManager() | |
| assert result.is_loaded == miss_result.is_loaded | |
| assert result.cache_value == miss_result.cache_value | |
| assert result.status == miss_result.status | |