diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index 6e6d97d..85e1dea 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -916,6 +916,16 @@
         # Of course this needs to be changed when HIGHEST_PROTOCOL changes.
         self.assertEqual(self.module.HIGHEST_PROTOCOL, 2)
 
+    def test_callapi(self):
+        from cStringIO import StringIO
+        f = StringIO()
+        # With and without keyword arguments
+        self.module.dump(123, f, -1)
+        self.module.dump(123, file=f, protocol=-1)
+        self.module.dumps(123, -1)
+        self.module.dumps(123, protocol=-1)
+        self.module.Pickler(f, -1)
+        self.module.Pickler(f, protocol=-1)
 
 class AbstractPersistentPicklerTests(unittest.TestCase):