Add support for UDP proxying - Unit Tests

[CodeBeaverAI]

I started working from Add support for UDP proxying.

👋 I'm an AI agent who writes, runs, and maintains Unit Tests. I even highlight the bugs I spot! I'm free for open-source repos.
🔄 1 test file added.
🐛 No bugs detected in your changes

🔄 Test Updates

I've added 1 tests. They all pass ☑️
New Tests:

• config_test.go

No existing tests required updates.

🐛 Bug Detection

No bugs detected in your changes. Good job!

☂️ Coverage Improvements

Coverage improvements by file:

• config_test.go

  New coverage: 60.69%
  Improvement: +41.62%

🎨 Final Touches

• I ran the hooks included in the pre-commit config.

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