test: Increase pkg/common/utils coverage to more than 93%

[ricardo3202]

What type of PR is this?

test

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• [x] This PR title match the format: \<type>(optional scope): \<description>
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提高对pkg/common/utils的覆盖率至93%以上

(Optional) More detailed description for this PR(en: English/zh: Chinese).

en:Increased unit test coverage for pkg/common/utils from 91.1% to 93.3% zh(optional):提高对pkg/common/utils的单元测试，覆盖率从91.1%提高到了93.3%

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.89%. Comparing base (9162dd1) to head (760f2b5). Report is 8 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #1108 +/- ## =========================================== + Coverage 82.75% 82.89% +0.14% =========================================== Files 98 98 Lines 10044 10062 +18 =========================================== + Hits 8312 8341 +29 + Misses 1241 1232 -9 + Partials 491 489 -2 ```

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