Add test for attributesFromError method

[hlts2]

Description:

As titled

Related Issue:

How Has This Been Tested?:

Environment:

• Go Version: 1.19.1
• Docker Version: 20.10.8
• Kubernetes Version: 1.22.0
• NGT Version: 1.14.8

Types of changes:

• Bug fix [type/bug]
• New feature [type/feature]
• Add tests [type/test]
• Security related changes [type/security]
• Add documents [type/documentation]
• Refactoring [type/refactoring]
• Update dependencies [type/dependency]
• Update benchmarks and performances [type/bench]
• Update CI [type/ci]

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully ran tests with your changes locally?

Checklist:

• I have read the CONTRIBUTING document.
• I have checked open Pull Requests for the similar feature or fixes?
• I have added tests and benchmarks to cover my changes.
• I have ensured all new and existing tests passed.
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly.

[vdaas-ci]

[CHATOPS:HELP] ChatOps commands.

• 🙆‍♀️ /approve - approve
• 💌 /changelog - replace the PR body by changelog details
• 🍱 /format - format codes and add licenses
• ✅ /gen-test - generate test codes
• 🏷️ /label - add labels
• ⏪ /rebase - rebase main
• 🔚 2️⃣ 🔚 /label actions/e2e-deploy - run E2E deploy & integration test

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	f3f5784
Status:	✅  Deploy successful!
Preview URL:	https://c95accf7.vald.pages.dev
Branch Preview URL:	https://test-internal-server-interce.vald.pages.dev

View logs

[codecov]

Codecov Report

Base: 30.06% // Head: 30.10% // Increases project coverage by +0.04% 🎉

Coverage data is based on head (f3f5784) compared to base (82458a8).
Patch coverage: 91.66% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1801      +/-   ##
==========================================
+ Coverage   30.06%   30.10%   +0.04%     
==========================================
  Files         371      371              
  Lines       33988    33991       +3     
==========================================
+ Hits        10217    10232      +15     
+ Misses      23358    23348      -10     
+ Partials      413      411       -2     

Impacted Files	Coverage Δ
...ernal/net/grpc/interceptor/server/metric/metric.go	22.91% <91.66%> (+22.91%)	⬆️
...nt/core/ngt/service/vqueue/uninserted_index_map.go	73.22% <0.00%> (-2.74%)	⬇️
internal/worker/queue.go	98.73% <0.00%> (-1.27%)	⬇️
internal/net/dialer.go	77.40% <0.00%> (-1.00%)	⬇️
internal/worker/worker.go	83.07% <0.00%> (+1.53%)	⬆️
internal/net/http/middleware/timeout.go	93.33% <0.00%> (+2.22%)	⬆️
...ent/core/ngt/service/vqueue/undeleted_index_map.go	76.66% <0.00%> (+5.55%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.