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-rw-r--r--tests/util/test_lrucache.py7
-rw-r--r--tests/util/test_treecache.py12
2 files changed, 19 insertions, 0 deletions
diff --git a/tests/util/test_lrucache.py b/tests/util/test_lrucache.py
index 2cd3d26454..bab366fb7f 100644
--- a/tests/util/test_lrucache.py
+++ b/tests/util/test_lrucache.py
@@ -19,6 +19,7 @@ from .. import unittest
 from synapse.util.caches.lrucache import LruCache
 from synapse.util.caches.treecache import TreeCache
 
+
 class LruCacheTestCase(unittest.TestCase):
 
     def test_get_set(self):
@@ -72,3 +73,9 @@ class LruCacheTestCase(unittest.TestCase):
         self.assertEquals(cache.get(("vehicles", "car")), "vroom")
         self.assertEquals(cache.get(("vehicles", "train")), "chuff")
         # Man from del_multi say "Yes".
+
+    def test_clear(self):
+        cache = LruCache(1)
+        cache["key"] = 1
+        cache.clear()
+        self.assertEquals(len(cache), 0)
diff --git a/tests/util/test_treecache.py b/tests/util/test_treecache.py
index 9946ceb3f1..1efbeb6b33 100644
--- a/tests/util/test_treecache.py
+++ b/tests/util/test_treecache.py
@@ -25,6 +25,7 @@ class TreeCacheTestCase(unittest.TestCase):
         cache[("b",)] = "B"
         self.assertEquals(cache.get(("a",)), "A")
         self.assertEquals(cache.get(("b",)), "B")
+        self.assertEquals(len(cache), 2)
 
     def test_pop_onelevel(self):
         cache = TreeCache()
@@ -33,6 +34,7 @@ class TreeCacheTestCase(unittest.TestCase):
         self.assertEquals(cache.pop(("a",)), "A")
         self.assertEquals(cache.pop(("a",)), None)
         self.assertEquals(cache.get(("b",)), "B")
+        self.assertEquals(len(cache), 1)
 
     def test_get_set_twolevel(self):
         cache = TreeCache()
@@ -42,6 +44,7 @@ class TreeCacheTestCase(unittest.TestCase):
         self.assertEquals(cache.get(("a", "a")), "AA")
         self.assertEquals(cache.get(("a", "b")), "AB")
         self.assertEquals(cache.get(("b", "a")), "BA")
+        self.assertEquals(len(cache), 3)
 
     def test_pop_twolevel(self):
         cache = TreeCache()
@@ -53,6 +56,7 @@ class TreeCacheTestCase(unittest.TestCase):
         self.assertEquals(cache.get(("a", "b")), "AB")
         self.assertEquals(cache.pop(("b", "a")), "BA")
         self.assertEquals(cache.pop(("b", "a")), None)
+        self.assertEquals(len(cache), 1)
 
     def test_pop_mixedlevel(self):
         cache = TreeCache()
@@ -64,3 +68,11 @@ class TreeCacheTestCase(unittest.TestCase):
         self.assertEquals(cache.get(("a", "a")), None)
         self.assertEquals(cache.get(("a", "b")), None)
         self.assertEquals(cache.get(("b", "a")), "BA")
+        self.assertEquals(len(cache), 1)
+
+    def test_clear(self):
+        cache = TreeCache()
+        cache[("a",)] = "A"
+        cache[("b",)] = "B"
+        cache.clear()
+        self.assertEquals(len(cache), 0)