Branch improve test and code

[wasjoe1]

• Add assertions into predicate classes, increases defensive programming & use of assertions
• Checked that testcases adhered to heuristics
• Defined better logging statements

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (36a9c1b) 89.86% compared to head (e6265d6) 89.13%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #269      +/-   ##
============================================
- Coverage     89.86%   89.13%   -0.74%     
- Complexity      797      813      +16     
============================================
  Files            97       97              
  Lines          2181     2199      +18     
  Branches        294      304      +10     
============================================
  Hits           1960     1960              
  Misses          162      162              
- Partials         59       77      +18     

Files	Coverage Δ
...edlog/address/logic/parser/GuestCommandParser.java	100.00% <100.00%> (ø)
...dlog/address/logic/parser/VendorCommandParser.java	100.00% <100.00%> (ø)
...log/address/logic/commands/GuestFilterCommand.java	90.00% <0.00%> (-10.00%)	⬇️
...og/address/logic/commands/VendorFilterCommand.java	90.00% <0.00%> (-10.00%)	⬇️
.../wedlog/address/model/person/AddressPredicate.java	87.50% <0.00%> (-12.50%)	⬇️
...va/wedlog/address/model/person/EmailPredicate.java	87.50% <0.00%> (-12.50%)	⬇️
...edlog/address/model/person/GuestRsvpPredicate.java	86.66% <0.00%> (-13.34%)	⬇️
...dlog/address/model/person/GuestTablePredicate.java	87.50% <0.00%> (-12.50%)	⬇️
...ava/wedlog/address/model/person/NamePredicate.java	86.66% <0.00%> (-13.34%)	⬇️
...va/wedlog/address/model/person/PhonePredicate.java	87.50% <0.00%> (-12.50%)	⬇️
... and 2 more

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[samuelim01]

LGTM! Not sure what CodeCov has against you 😭