test(mint): types package

[aljo242]

Part of #20

Add testing coverage to the types package of x/mint

[codecov]

Codecov Report

Merging #57 (15cf571) into main (50c8583) will increase coverage by 1.51%.
The diff coverage is 69.44%.

❗ Current head 15cf571 differs from pull request most recent head 5b48fef. Consider uploading reports for the commit 5b48fef to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##            main      #57      +/-   ##
=========================================
+ Coverage   9.21%   10.72%   +1.51%     
=========================================
  Files         50       50              
  Lines       8875     8836      -39     
=========================================
+ Hits         818      948     +130     
+ Misses      8034     7864     -170     
- Partials      23       24       +1     

Impacted Files	Coverage Δ
x/mint/genesis.go	0.00% <0.00%> (ø)
x/mint/types/params.go	86.89% <76.19%> (+78.78%)	⬆️
x/mint/simulation/genesis.go	97.72% <100.00%> (+0.08%)	⬆️
x/mint/types/genesis.go	100.00% <100.00%> (+100.00%)	⬆️
x/mint/types/minter.go	95.74% <100.00%> (+12.76%)	⬆️

[lumtis]

👍