test: unit tests for csv2cve.py

[yashugarg]

fixes #1736

[codecov-commenter]

Codecov Report

Merging #1737 (a44b22c) into main (82ce324) will increase coverage by 0.41%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1737      +/-   ##
==========================================
+ Coverage   80.20%   80.62%   +0.41%     
==========================================
  Files         300      301       +1     
  Lines        6427     6447      +20     
  Branches     1050     1052       +2     
==========================================
+ Hits         5155     5198      +43     
+ Misses       1054     1033      -21     
+ Partials      218      216       -2     

Flag	Coverage Δ
longtests	80.62% <100.00%> (+0.41%)	⬆️

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Impacted Files	Coverage Δ
test/test_csv2cve.py	100.00% <100.00%> (ø)
cve_bin_tool/nvd_api.py	75.20% <0.00%> (-8.80%)	⬇️
cve_bin_tool/cli.py	70.86% <0.00%> (+1.96%)	⬆️
cve_bin_tool/cve_scanner.py	86.48% <0.00%> (+2.02%)	⬆️
cve_bin_tool/error_handler.py	93.65% <0.00%> (+4.76%)	⬆️
cve_bin_tool/csv2cve.py	100.00% <0.00%> (+100.00%)	⬆️

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[BreadGenie]

LGTM

[terriko]

cve scan failure is related to aiohttp and is unrelated, so I'm going to go ahead and merge this.