Fix race error of server package

[hlts2]

Description:

WHAT

This PR contains the following changes.

• I have fixed the use of error groups
  • The server package uses errgroup, but when errgroup.Get is used in the test case, a race condition occurs due to conflicts with other test functions.
• I have deleted the duplicate test function
  • The original test name was incorrect, and a test was generated to test the same function, so it was deleted

WHY

A race error was occurring in the server package.

Related Issue:

How Has This Been Tested?:

Environment:

• Go Version: 1.18.2
• Docker Version: 20.10.8
• Kubernetes Version: 1.22.0
• NGT Version: 1.14.5

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.

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[codecov]

Codecov Report

Merging #1689 (678e9a1) into master (626c706) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1689      +/-   ##
==========================================
+ Coverage   31.30%   31.35%   +0.05%     
==========================================
  Files         374      374              
  Lines       32591    32591              
==========================================
+ Hits        10203    10220      +17     
+ Misses      22003    21989      -14     
+ Partials      385      382       -3     

Impacted Files	Coverage Δ
pkg/agent/core/ngt/service/option.go	89.57% <0.00%> (-1.85%)	⬇️
internal/worker/queue.go	98.73% <0.00%> (-1.27%)	⬇️
internal/core/algorithm/ngt/ngt.go	65.35% <0.00%> (+0.65%)	⬆️
internal/worker/worker.go	85.15% <0.00%> (+2.34%)	⬆️
...ent/core/ngt/service/vqueue/undeleted_index_map.go	76.66% <0.00%> (+8.33%)	⬆️

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[vankichi]

Thanks :)