refactor(test): net test mocking

[hugoh]

No description provided.

[deepsource-io]

DeepSource Code Review

We reviewed changes in 2bdedfa...51de7e9 on this pull request. Below is the summary for the review, and you can see the individual issues we found as inline review comments.

See full review on DeepSource ↗

PR Report Card

Overall Grade

Security   Reliability   Complexity   Hygiene

Code Review Summary

Analyzer	Status	Updated (UTC)	Details
Go		May 25, 2026 10:36p.m.	Review ↗
Secrets		May 25, 2026 10:36p.m.	Review ↗

---

Important

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[deepsource-io]

Method receiver 'a' is not referenced in method's body, consider removing it

Methods with unused receivers can be a symptom of unfinished refactoring or a bug. To keep
the same method signature, omit the receiver name or '_' as it is unused.

[deepsource-io]

Unused method receiver '_', consider removing it

Methods with unused receivers can be a symptom of unfinished refactoring or a bug. To keep
the same method signature, omit the receiver name or '_' as it is unused.

[deepsource-io]

receiver name should not be an underscore, omit the name if it is unused

The name of a method's receiver should be a reflection of its
identity; often a one or two letter abbreviation of its type
suffices (such as "c" or "cl" for "Client").

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 39.13043% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.56%. Comparing base (2bdedfa) to head (51de7e9).

Files with missing lines	Patch %	Lines
internal/check/probe_dns.go	11.11%	7 Missing and 1 partial ⚠️
internal/check/probe_tcp.go	60.00%	3 Missing and 1 partial ⚠️
internal/check/probe_http.go	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #248      +/-   ##
==========================================
- Coverage   89.10%   86.56%   -2.54%     
==========================================
  Files          17       17              
  Lines         725      737      +12     
==========================================
- Hits          646      638       -8     
- Misses         51       68      +17     
- Partials       28       31       +3     

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