Add unittest to improve code coverage

Former-commit-id: f7137a968e9cea7ff13ef186902d323856f25607

CHANGELOG.md

@@ -26,6 +26,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-653 - When config check fail, Milvus close without message
 - MS-654 - Describe index timeout when building index
 - MS-658 - Fix SQ8 Hybrid can't search
+- \#23 - Add unittest to improve code coverage
 
 ## Improvement
 - MS-552 - Add and change the easylogging library
@@ -190,7 +191,8 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-570 - Add prometheus docker-compose file
 - MS-576 - Scheduler refactor
 - MS-592 - Change showtables stream transport to unary
-#23 Add unittest to improve code coverage
+- /#23 - Add unittest to improve code coverage
+sfasdas
 
 ## New Feature
 - MS-343 - Implement ResourceMgr