bugfix: Exception when the results is empty

list operation crash when limit is not provided, error message:
OperationFailure: the limit must be positive

JIRA: RELENG-265

Change-Id: Id8db93b594010d054a71d301d9c42eed113c12e1
Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/testapi/opnfv_testapi/resources/handlers.py b/testapi/opnfv_testapi/resources/handlers.py
index 0234c8a..5c98c48 100644 (file)
--- a/testapi/opnfv_testapi/resources/handlers.py
+++ b/testapi/opnfv_testapi/resources/handlers.py
@@ -127,8 +127,8 @@ class GenericApiHandler(web.RequestHandler):
                 total_pages += 1
             pipelines.append({'$skip': (page - 1) * per_page})
             pipelines.append({'$limit': per_page})
-        else:
-            pipelines.append({'$limit': records_nr})
+        elif last > 0:
+            pipelines.append({'$limit': last})
 
         cursor = self._eval_db(self.table,
                                'aggregate',