Add Tests for StringUtils

[shashankrnr32]

No description provided.

[codecov]

Codecov Report

Patch coverage: 63.63% and project coverage change: +35.19 🎉

Comparison is base (e2669cb) 20.26% compared to head (171b043) 55.45%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #16       +/-   ##
===========================================
+ Coverage   20.26%   55.45%   +35.19%     
===========================================
  Files           4        5        +1     
  Lines         306      339       +33     
  Branches       70       72        +2     
===========================================
+ Hits           62      188      +126     
+ Misses        244      150       -94     
- Partials        0        1        +1     

Impacted Files	Coverage Δ
pycommons/lang/arrayutils.py	90.90% <ø> (ø)
pycommons/lang/charutils.py	100.00% <ø> (ø)
pycommons/lang/stringutils.py	40.77% <ø> (ø)
pycommons/lang/exceptionutils.py	57.14% <57.14%> (ø)
pycommons/lang/__init__.py	100.00% <100.00%> (ø)

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