Add basic dictionary cache

tests/util/test_dict_cache.py

@@ -0,0 +1,101 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015 OpenMarket Ltd
+#
+# 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 twisted.internet import defer
+from tests import unittest
+
+from synapse.storage.util.caches import DictionaryCache
+
+
+class DictCacheTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.cache = DictionaryCache("foobar")
+
+    def test_simple_cache_hit_full(self):
+        key = "test_simple_cache_hit_full"
+
+        v = self.cache.get(key)
+        self.assertEqual((False, {}), v)
+
+        seq = self.cache.sequence
+        test_value = {"test": "test_simple_cache_hit_full"}
+        self.cache.update(seq, key, test_value, full=True)
+
+        c = self.cache.get(key)
+        self.assertEqual(test_value, c.value)
+
+    def test_simple_cache_hit_partial(self):
+        key = "test_simple_cache_hit_partial"
+
+        seq = self.cache.sequence
+        test_value = {
+            "test": "test_simple_cache_hit_partial"
+        }
+        self.cache.update(seq, key, test_value, full=True)
+
+        c = self.cache.get(key, ["test"])
+        self.assertEqual(test_value, c.value)
+
+    def test_simple_cache_miss_partial(self):
+        key = "test_simple_cache_miss_partial"
+
+        seq = self.cache.sequence
+        test_value = {
+            "test": "test_simple_cache_miss_partial"
+        }
+        self.cache.update(seq, key, test_value, full=True)
+
+        c = self.cache.get(key, ["test2"])
+        self.assertEqual({}, c.value)
+
+    def test_simple_cache_hit_miss_partial(self):
+        key = "test_simple_cache_hit_miss_partial"
+
+        seq = self.cache.sequence
+        test_value = {
+            "test": "test_simple_cache_hit_miss_partial",
+            "test2": "test_simple_cache_hit_miss_partial2",
+            "test3": "test_simple_cache_hit_miss_partial3",
+        }
+        self.cache.update(seq, key, test_value, full=True)
+
+        c = self.cache.get(key, ["test2"])
+        self.assertEqual({"test2": "test_simple_cache_hit_miss_partial2"}, c.value)
+
+    def test_multi_insert(self):
+        key = "test_simple_cache_hit_miss_partial"
+
+        seq = self.cache.sequence
+        test_value_1 = {
+            "test": "test_simple_cache_hit_miss_partial",
+        }
+        self.cache.update(seq, key, test_value_1, full=False)
+
+        seq = self.cache.sequence
+        test_value_2 = {
+            "test2": "test_simple_cache_hit_miss_partial2",
+        }
+        self.cache.update(seq, key, test_value_2, full=False)
+
+        c = self.cache.get(key)
+        self.assertEqual(
+            {
+                "test": "test_simple_cache_hit_miss_partial",
+                "test2": "test_simple_cache_hit_miss_partial2",
+            },
+            c.value
+        )