added back test mistakedly removed.

We have to check both TypeError and OverflowError. On Python3 32-bit,
we'll get an OverflowError, otherwise, we get type error.

BTrees/tests/testBTrees.py

@@ -453,13 +453,13 @@ class FamilyTest(unittest.TestCase):
         # this next bit illustrates an, um, "interesting feature".  If
         # the characteristics change to match the 64 bit version, please
         # feel free to change.
-        big = BTrees.family32.maxint + 1
-        if python3:
-            expected_exception = OverflowError
-        else:
-            expected_exception = TypeError
-        self.assertRaises(expected_exception, s.insert,
-                          BTrees.family32.minint - 1)
+        try: s.insert(BTrees.family32.maxint + 1)
+        except (TypeError, OverflowError): pass
+        else: self.assert_(False)
+
+        try: s.insert(BTrees.family32.minint - 1)
+        except (TypeError, OverflowError): pass
+        else: self.assert_(False)
         self.check_pickling(BTrees.family32)
 
     def test64(self):