Work around missing sys.getrefcount in PyPy.

src/AccessControl/tests/testZopeGuards.py

@@ -91,14 +91,22 @@ def tearDown(self):
     def test_unauthorized(self):
         from AccessControl import Unauthorized
         from AccessControl.ZopeGuards import guarded_getattr
+
+        try:
+            # PyPy
+            from sys import getrefcount
+        except ImportError:
+            def getrefcount(obj):
+                return 1
+
         obj, name = Method(), 'args'
         value = getattr(obj, name)
-        rc = sys.getrefcount(value)
+        rc = getrefcount(value)
         self.__sm.reject = True
         self.assertRaises(Unauthorized, guarded_getattr, obj, name)
         self.assert_(self.__sm.calls)
         del self.__sm.calls[:]
-        self.assertEqual(rc, sys.getrefcount(value))
+        self.assertEqual(rc, getrefcount(value))
 
     def test_calls_validate_for_unknown_type(self):
         from AccessControl.ZopeGuards import guarded_getattr

src/AccessControl/tests/testZopeSecurityPolicy.py

@@ -233,15 +233,22 @@ def testProxyAccess(self):
         self.assertPolicyAllows(item, 'dangerous_m')
 
     def testIdentityProxy(self):
+        try:
+            # PyPy
+            from sys import getrefcount
+        except ImportError:
+            def getrefcount(obj):
+                return 1
+
         eo = ImplictAcqObject()
         eo.getOwner = lambda: None
         self.context.stack.append(eo)
-        rc = sys.getrefcount(eo)
+        rc = getrefcount(eo)
         self.testUserAccess()
-        self.assertEqual(rc, sys.getrefcount(eo))
+        self.assertEqual(rc, getrefcount(eo))
         eo._proxy_roles = ()
         self.testUserAccess()
-        self.assertEqual(rc, sys.getrefcount(eo))
+        self.assertEqual(rc, getrefcount(eo))
 
     def testAccessToUnprotectedSubobjects(self):
         item = self.item