added exception catch and test for bad prefix

1 files changed, 7 insertions, 0 deletions

diff --git a/nova/tests/test_ipv6.py b/nova/tests/test_ipv6.py
index 891d52358..6e72b7330 100644
--- a/nova/tests/test_ipv6.py
+++ b/nova/tests/test_ipv6.py
@@ -45,6 +45,13 @@ class IPv6RFC2462TestCase(test.TestCase):
         self.assertRaises(TypeError, ipv6.to_global,
                                     '2001:db8::', bad_mac, 'test')
 
+    def test_to_global_with_bad_prefix(self):
+        bad_prefix = '82'
+        self.assertRaises(TypeError, ipv6.to_global,
+                                    bad_prefix, 
+                                    '2001:db8::216:3eff:fe33:4455',
+                                    'test')
+
 
 class IPv6AccountIdentiferTestCase(test.TestCase):
     """Unit tests for IPv6 account_identifier backend operations."""