Service exception test

[Han-Xinlong]

Fixes #1397

Changes proposed in this pull request:

• Service exception test

Check mailbox configuration when submitting. Contributor Guide

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.15% 🎉

Comparison is base (10bc5c3) 35.47% compared to head (d467008) 35.63%.
Report is 4 commits behind head on develop.

❗ Current head d467008 differs from pull request most recent head e17a2c5. Consider uploading reports for the commit e17a2c5 to get more accurate results

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #1410      +/-   ##
=============================================
+ Coverage      35.47%   35.63%   +0.15%     
- Complexity       844      848       +4     
=============================================
  Files            258      258              
  Lines           5722     5722              
  Branches         530      530              
=============================================
+ Hits            2030     2039       +9     
+ Misses          3499     3490       -9     
  Partials         193      193              

see 2 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.