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-rw-r--r--tests/storage/test__base.py2
-rw-r--r--tests/util/caches/test_descriptors.py38
-rw-r--r--tests/util/test_snapshot_cache.py4
3 files changed, 42 insertions, 2 deletions
diff --git a/tests/storage/test__base.py b/tests/storage/test__base.py
index 8361dd8cee..281eb16254 100644
--- a/tests/storage/test__base.py
+++ b/tests/storage/test__base.py
@@ -199,7 +199,7 @@ class CacheDecoratorTestCase(unittest.TestCase):
 
         a.func.prefill(("foo",), ObservableDeferred(d))
 
-        self.assertEquals(a.func("foo").result, d.result)
+        self.assertEquals(a.func("foo"), d.result)
         self.assertEquals(callcount[0], 0)
 
     @defer.inlineCallbacks
diff --git a/tests/util/caches/test_descriptors.py b/tests/util/caches/test_descriptors.py
index 4414e86771..3f14ab503f 100644
--- a/tests/util/caches/test_descriptors.py
+++ b/tests/util/caches/test_descriptors.py
@@ -175,3 +175,41 @@ class DescriptorTestCase(unittest.TestCase):
                          logcontext.LoggingContext.sentinel)
 
         return d1
+
+    @defer.inlineCallbacks
+    def test_cache_default_args(self):
+        class Cls(object):
+            def __init__(self):
+                self.mock = mock.Mock()
+
+            @descriptors.cached()
+            def fn(self, arg1, arg2=2, arg3=3):
+                return self.mock(arg1, arg2, arg3)
+
+        obj = Cls()
+
+        obj.mock.return_value = 'fish'
+        r = yield obj.fn(1, 2, 3)
+        self.assertEqual(r, 'fish')
+        obj.mock.assert_called_once_with(1, 2, 3)
+        obj.mock.reset_mock()
+
+        # a call with same params shouldn't call the mock again
+        r = yield obj.fn(1, 2)
+        self.assertEqual(r, 'fish')
+        obj.mock.assert_not_called()
+        obj.mock.reset_mock()
+
+        # a call with different params should call the mock again
+        obj.mock.return_value = 'chips'
+        r = yield obj.fn(2, 3)
+        self.assertEqual(r, 'chips')
+        obj.mock.assert_called_once_with(2, 3, 3)
+        obj.mock.reset_mock()
+
+        # the two values should now be cached
+        r = yield obj.fn(1, 2)
+        self.assertEqual(r, 'fish')
+        r = yield obj.fn(2, 3)
+        self.assertEqual(r, 'chips')
+        obj.mock.assert_not_called()
diff --git a/tests/util/test_snapshot_cache.py b/tests/util/test_snapshot_cache.py
index 7e289715ba..d3a8630c2f 100644
--- a/tests/util/test_snapshot_cache.py
+++ b/tests/util/test_snapshot_cache.py
@@ -53,7 +53,9 @@ class SnapshotCacheTestCase(unittest.TestCase):
         # before the cache expires returns a resolved deferred.
         get_result_at_11 = self.cache.get(11, "key")
         self.assertIsNotNone(get_result_at_11)
-        self.assertTrue(get_result_at_11.called)
+        if isinstance(get_result_at_11, Deferred):
+            # The cache may return the actual result rather than a deferred
+            self.assertTrue(get_result_at_11.called)
 
         # Check that getting the key after the deferred has resolved
         # after the cache expires returns None