diff --git a/tests/cache/tests.py b/tests/cache/tests.py
index 7a98fc4ba1..a6fbbe6e4b 100644
--- a/tests/cache/tests.py
+++ b/tests/cache/tests.py
@@ -157,17 +157,20 @@ class DummyCacheTests(SimpleTestCase):
 
     def test_data_types(self):
         "All data types are ignored equally by the dummy cache"
-        stuff = {
+        tests = {
             'string': 'this is a string',
             'int': 42,
+            'bool': True,
             'list': [1, 2, 3, 4],
             'tuple': (1, 2, 3, 4),
             'dict': {'A': 1, 'B': 2},
             'function': f,
             'class': C,
         }
-        cache.set("stuff", stuff)
-        self.assertIsNone(cache.get("stuff"))
+        for key, value in tests.items():
+            with self.subTest(key=key):
+                cache.set(key, value)
+                self.assertIsNone(cache.get(key))
 
     def test_expiration(self):
         "Expiration has no effect on the dummy cache"