Fix warnings in test code

[ccostin93]

This change is 

[codecov]

Codecov Report

Merging #361 (9b5b979) into master (823465b) will increase coverage by 0.49%.
The diff coverage is 78.72%.

@@             Coverage Diff              @@
##             master     #361      +/-   ##
============================================
+ Coverage     83.94%   84.43%   +0.49%     
- Complexity     1043     1050       +7     
============================================
  Files           176      177       +1     
  Lines          2572     2557      -15     
  Branches         20       16       -4     
============================================
  Hits           2159     2159              
+ Misses          395      385      -10     
+ Partials         18       13       -5     

Impacted Files	Coverage Δ	Complexity Δ
...finapi/bankconnection/out/FpTwoStepProcedures.java	100.00% <ø> (ø)	7.00 <0.00> (ø)
...n/java/org/proshin/finapi/mandator/FpMandator.java	92.00% <ø> (ø)	9.00 <0.00> (ø)
.../org/proshin/finapi/exception/FinapiException.java	50.00% <66.66%> (ø)	9.00 <1.00> (ø)
...n/java/org/proshin/finapi/endpoint/FpEndpoint.java	78.12% <79.31%> (+11.45%)	15.00 <8.00> (+3.00)
...inapi/exception/FinapiAuthenticationException.java	80.00% <80.00%> (ø)	3.00 <3.00> (?)
...n/java/org/proshin/finapi/mock/in/Transaction.java	100.00% <0.00%> (+6.25%)	12.00% <0.00%> (+1.00%)

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
3 Code Smells

No Coverage information
0.0% Duplication