[#258] make a test rule for totalrows fix

genquery.py

@@ -183,14 +183,14 @@ def __repr__(self, **kw):
     @property
     def parameters(self): return dict((name,getattr(self,name)) for name in self.__parameter_names)
 
-    def copy(self,**options):
-        incorrect = list(k for k in options if k not in self.__parameter_names)
+    def copy(self,**parameter_changes):
+        incorrect = list(k for k in parameter_changes if k not in self.__parameter_names)
         if incorrect:
             raise GenQuery_Options_Spec_Error('Incorrect option(s) to Query: '+', '.join(incorrect))
-        # let `options' override but not duplicate `self.parameters' in the keyword argument list
-        keyword_items_list = list(self.parameters.items())  + list(options.items())
+        # let `parameter_changes' override but not duplicate `self.parameters' in the keyword argument list
+        keyword_items_list = list(self.parameters.items())  + list(parameter_changes.items())
         return Query(self.callback, **dict(keyword_items_list))
-        #return Query(self.callback, **{**self.parameters, **options})
+        #return Query(self.callback, **{**self.parameters, **parameter_changes})
 
     def exec_if_not_yet_execed(self):
         """Query execution is delayed until the first result or total row count is requested."""
@@ -267,8 +267,7 @@ def total_rows(self):
                     # So instead, we run the query twice manually. This should
                     # perform only slightly worse.
                     # [1]: https://github.com/irods/irods/blob/4.2.6/plugins/database/src/general_query.cpp#L2393
-                    self._total = Query(self.callback, self.columns, self.conditions, limit=0,
-                                        options=self.options|Option.RETURN_TOTAL_ROW_COUNT).total_rows()
+                    self._total = self.copy(limit=0, options=self.options|Option.RETURN_TOTAL_ROW_COUNT).total_rows()
 
         return self._total