[test] Add unit test for genesis

[envestcc]

Description

Fixes #4122

Type of change

Please delete options that are not relevant.

• Code refactor or improvement

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [] make test
• [] fullsync
• [] Other test (please specify)

Test Configuration:

• Firmware version:
• Hardware:
• Toolchain:
• SDK:

Checklist:

• [] My code follows the style guidelines of this project
• [] I have performed a self-review of my code
• [] I have commented my code, particularly in hard-to-understand areas
• [] I have made corresponding changes to the documentation
• [] My changes generate no new warnings
• [] I have added tests that prove my fix is effective or that my feature works
• [] New and existing unit tests pass locally with my changes
• [] Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Attention: 552 lines in your changes are missing coverage. Please review.

Comparison is base (e1f0636) 75.38% compared to head (a11da80) 76.30%.
Report is 170 commits behind head on master.

Files	Patch %	Lines
action/protocol/staking/staking_statereader.go	69.76%	35 Missing and 17 partials ⚠️
action/protocol/execution/evm/evm.go	48.38%	47 Missing and 1 partial ⚠️
api/coreservice.go	63.24%	37 Missing and 6 partials ⚠️
action/candidate_endorsement.go	0.00%	31 Missing ⚠️
api/web3server.go	80.50%	29 Missing and 2 partials ⚠️
action/protocol/staking/protocol.go	45.09%	28 Missing ⚠️
action/candidate_activate.go	0.00%	25 Missing ⚠️
...tion/protocol/staking/contractstake_bucket_type.go	0.00%	24 Missing ⚠️
action/protocol/rewarding/fund.go	23.07%	19 Missing and 1 partial ⚠️
api/websocket.go	0.00%	20 Missing ⚠️
... and 43 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4125      +/-   ##
==========================================
+ Coverage   75.38%   76.30%   +0.92%     
==========================================
  Files         303      339      +36     
  Lines       25923    28871    +2948     
==========================================
+ Hits        19541    22031    +2490     
- Misses       5360     5735     +375     
- Partials     1022     1105      +83     

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[sonarcloud]

Quality Gate failed

Failed conditions

4.6% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud