disable test if credentials not found

tests/testDbLocal.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 # LSST Data Management System
-# Copyright 2013-2014 LSST Corporation.
+# Copyright 2013-2015 LSST Corporation.
 # 
 # This product includes software developed by the
 # LSST Project (http://www.lsst.org/).
@@ -49,6 +49,7 @@
 import tempfile
 import time
 import unittest
+import os.path
 
 # local
 from lsst.db.db import Db, DbException
@@ -476,6 +477,10 @@ def main():
         datefmt='%m/%d/%Y %I:%M:%S', 
         level=logging.DEBUG)
 
+    if not os.path.isfile(TestDbLocal.CREDFILE):
+        logging.warning("Can't test, %s not found" % TestDbLocal.CREDFILE)
+        return
+
     if TestDbLocal.CREDFILE.startswith('~'): 
         credFile = os.path.expanduser(TestDbLocal.CREDFILE)
     if not os.path.isfile(credFile):