test: unit testing zetabridge package in zetaclient

[kevinssgh]

Description

Improving test coverage for zetabridge query and transaction member functions.

Closes: #1918

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Include instructions and any relevant details so others can reproduce.

Test output for zetabridge:

Before

Zetabridge
ok      github.com/zeta-chain/zetacore/zetaclient/zetabridge    1.143s  coverage: 0.8% of statements

After

PASS
        github.com/zeta-chain/zetacore/zetaclient/zetabridge    coverage: 63.4% of statements
ok      github.com/zeta-chain/zetacore/zetaclient/zetabridge    11.557s

This can definitely be improved, but the main point is that the foundation for future testing is in place for this module.

• Tested CCTX in localnet
• Go unit tests
• Go integration tests
• Tested via GitHub Actions

Checklist:

• I have added unit tests that prove my fix feature works

[codecov]

Codecov Report

Attention: Patch coverage is 92.30769% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 68.48%. Comparing base (131a774) to head (183440a).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1941      +/-   ##
===========================================
+ Coverage    65.11%   68.48%   +3.37%     
===========================================
  Files          236      236              
  Lines        13610    13617       +7     
===========================================
+ Hits          8862     9326     +464     
+ Misses        4375     3841     -534     
- Partials       373      450      +77     

Files	Coverage Δ
zetaclient/config/types.go	0.00% <ø> (ø)
zetaclient/zetabridge/tx.go	52.65% <100.00%> (+50.00%)	⬆️
zetaclient/zetabridge/zetacore_bridge.go	39.07% <100.00%> (+39.07%)	⬆️
zetaclient/zetabridge/broadcast.go	58.19% <78.57%> (+58.19%)	⬆️

... and 3 files with indirect coverage changes

[ws4charlie]

The mock looks nice. Left one minor comment.

[ws4charlie]

lgtm