add _ function in tests

Change-Id: I7e95f062f5eec57a76bbea66feaead17d3a18c6f

melange/client/tests/__init__.py

@@ -16,9 +16,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+
 import unittest
 
-# TODO(jkoelker) Convert this to mock
+# See http://code.google.com/p/python-nose/issues/detail?id=373
+# The code below enables nosetests to work with i18n _() blocks
+import __builtin__
+setattr(__builtin__, '_', lambda x: x)
+
 import mox