Add test for optional fields to check if its there

[eliotlee68]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 93.4981%. Comparing base (be2de23) to head (2d833c6).
Report is 20 commits behind head on master.

❗ Current head 2d833c6 differs from pull request most recent head 42ce7ea. Consider uploading reports for the commit 42ce7ea to get more accurate results

Files	Patch %	Lines
...model/person/AddressContainsKeywordsPredicate.java	0.0000%	1 Missing and 1 partial ⚠️
...l/person/DescriptionContainsKeywordsPredicate.java	0.0000%	1 Missing and 1 partial ⚠️
...ess/model/person/KinContainsKeywordsPredicate.java	0.0000%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##               master       #218        +/-   ##
==================================================
- Coverage     93.8411%   93.4981%   -0.3431%     
- Complexity        716        717         +1     
==================================================
  Files              96         96                
  Lines            1851       1861        +10     
  Branches          182        183         +1     
==================================================
+ Hits             1737       1740         +3     
- Misses             65         68         +3     
- Partials           49         53         +4     

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[Rishit02]

LGTM