Added unit test to test for bug in indexing objects with no keywords,

which generated spurious log entry about unindexing a non-existent
object.

lib/python/SearchIndex/tests/testUnKeywordIndex.py

@@ -151,6 +151,24 @@ class TestCase( unittest.TestCase ):
         for k, v in expectedValues:
             assert k in result
 
+    def testAddObjectWOKeywords(self):
+
+
+        import zLOG
+
+        def log_write(subsystem, severity, summary, detail, error,
+                      PROBLEM=zLOG.PROBLEM):
+            if severity >= PROBLEM:
+                assert 0, "%s(%s): %s" % (subsystem, severity, summary)
+
+        old_log_write=zLOG.log_write
+        zLOG.log_write=log_write
+        try:
+            self._populateIndex()
+            self._index.index_object(999, None)
+        finally:
+            zLOG.log_write=old_log_write
+    
     def testEmpty( self ):
         assert len( self._index ) == 0
         assert len( self._index.referencedObjects() ) == 0