Issue #9410: Various optimizations to the pickle module, leading to
speedups up to 4x (depending on the benchmark).  Mostly ported from
Unladen Swallow; initial patch by Alexandre Vassalotti.
diff --git a/Lib/test/test_pickle.py b/Lib/test/test_pickle.py
index bb681bf..7f642c8 100644
--- a/Lib/test/test_pickle.py
+++ b/Lib/test/test_pickle.py
@@ -37,6 +37,18 @@
         return u.load()
 
 
+class InMemoryPickleTests(AbstractPickleTests):
+
+    pickler = pickle._Pickler
+    unpickler = pickle._Unpickler
+
+    def dumps(self, arg, proto=None):
+        return pickle.dumps(arg, proto)
+
+    def loads(self, buf):
+        return pickle.loads(buf)
+
+
 class PyPersPicklerTests(AbstractPersistentPicklerTests):
 
     pickler = pickle._Pickler
@@ -95,7 +107,8 @@
         tests.extend([CPicklerTests, CPersPicklerTests,
                       CDumpPickle_LoadPickle, DumpPickle_CLoadPickle,
                       PyPicklerUnpicklerObjectTests,
-                      CPicklerUnpicklerObjectTests])
+                      CPicklerUnpicklerObjectTests,
+                      InMemoryPickleTests])
     support.run_unittest(*tests)
     support.run_doctest(pickle)