fix/test: NotNull check for a type param in DeplomentsResource + test expansion

[mkralik3]

• Add more tests for Deployments resources + native tests

[codecov]

Codecov Report

Merging #688 (7a1bbd3) into main (682f465) will increase coverage by 0.87%.
The diff coverage is 100.00%.

❗ Current head 7a1bbd3 differs from pull request most recent head 205c630. Consider uploading reports for the commit 205c630 to get more accurate results

@@             Coverage Diff              @@
##               main     #688      +/-   ##
============================================
+ Coverage     79.47%   80.35%   +0.87%     
- Complexity      153      157       +4     
============================================
  Files            53       53              
  Lines          2709     2713       +4     
  Branches        432      432              
============================================
+ Hits           2153     2180      +27     
+ Misses          373      355      -18     
+ Partials        183      178       -5     

Impacted Files	Coverage Δ
...o/backend/api/resource/v1/DeploymentsResource.java	84.90% <100.00%> (+19.59%)	⬆️

... and 3 files with indirect coverage changes

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication