fix(tests): added tests for Mutex

[cnlangzi]

Fixes

• added tests for Mutex

[sourcery-ai]

Hey @cnlangzi - I've reviewed your changes and they look great!

General suggestions:

• Consider reviewing the error handling strategy to ensure consistency and clarity across the system.
• Evaluate the impact of the changes on the system's performance, particularly in high-load scenarios.
• Ensure that the new logic integrates seamlessly with existing components and does not introduce regressions.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Docstrings: all looks good

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[codecov]

Codecov Report

Attention: Patch coverage is 87.57062% with 22 lines in your changes are missing coverage. Please review.

Project coverage is 85.78%. Comparing base (75bf8a9) to head (47acd96).

Files	Patch %	Lines
mutex.go	86.57%	13 Missing and 7 partials ⚠️
node_svc.go	90.90%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main       #2       +/-   ##
===========================================
+ Coverage   70.02%   85.78%   +15.75%     
===========================================
  Files           9        9               
  Lines         337      422       +85     
===========================================
+ Hits          236      362      +126     
+ Misses         86       40       -46     
- Partials       15       20        +5     

Flag	Coverage Δ
Unit-Tests	85.78% <87.57%> (+15.75%)	⬆️

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[deepsource-io]

Here's the code health analysis summary for commits 75bf8a9..47acd96. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Go	✅ Success		View Check ↗

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