Add IT for GroupNode without partition by

[JackieTien97]

No description provided.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.03%. Comparing base (b6c13d7) to head (70b4375).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #16924      +/-   ##
============================================
- Coverage     39.04%   39.03%   -0.02%     
  Complexity      207      207              
============================================
  Files          5023     5023              
  Lines        333410   333410              
  Branches      42433    42433              
============================================
- Hits         130175   130137      -38     
- Misses       203235   203273      +38     

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