Add tests for --error and --output as sbatch_args in test_submitter

[adi611]

Types of changes

• New feature (non-breaking change which adds functionality)

Summary

Added tests for valid --error and --output as sbatch_args.

Checklist

I am getting error for test_slurm_args_3 while testing (which checks for --error) - AttributeError: 'NoneType' object has no attribute 'replace'

Possible reason for this could be in workers.py here. In this, we are assigning error_file to None when --error flag is indeed detected. And later we are using .replace() function on error_file which is None in our case.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +43.44 🎉

Comparison is base (5ada4ca) 38.27% compared to head (7bc7013) 81.72%.

❗ Current head 7bc7013 differs from pull request most recent head 0acb8a7. Consider uploading reports for the commit 0acb8a7 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #638       +/-   ##
===========================================
+ Coverage   38.27%   81.72%   +43.44%     
===========================================
  Files          20       20               
  Lines        4394     4394               
  Branches     1202        0     -1202     
===========================================
+ Hits         1682     3591     +1909     
+ Misses       2417      803     -1614     
+ Partials      295        0      -295     

Flag	Coverage Δ
unittests	81.72% <ø> (+43.46%)	⬆️

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see 18 files with indirect coverage changes

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[tclose]

This should be ported across

[tclose]

PR looking to address #630