Fix unstable test cases in OccupiableBucketLeapArrayTest

[maoyiz]

Describe what this PR does / why we need it

Fix #685

Does this pull request fix one issue?

Describe how you did it

Pls see this blog for analysis: https://www.yuque.com/zhaixiaoxiang/cwrx8f/zzy18c

Describe how to verify it

Execute this test case many times to ensure it, because the BUG would happen by chance.

Special notes for reviews

[codecov-io]

Codecov Report

Merging #687 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #687      +/-   ##
============================================
+ Coverage      40.8%   40.84%   +0.03%     
- Complexity     1215     1217       +2     
============================================
  Files           267      267              
  Lines          7911     7911              
  Branches       1072     1072              
============================================
+ Hits           3228     3231       +3     
+ Misses         4289     4288       -1     
+ Partials        394      392       -2

Impacted Files	Coverage Δ	Complexity Δ
...java/com/alibaba/csp/sentinel/log/LoggerUtils.java	66.66% <0%> (+19.99%)	4% <0%> (+2%)	⬆️

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[sczyh30]

Hi, thanks for contributing. Please make sure the email of your commits matches your GitHub email.

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感谢贡献，请将 commit 对应的 email 调整成与 GitHub 的 email 相匹配。

[maoyiz]

@sczyh30 Is there anything else need improve ?

[sczyh30]

@sczyh30 Is there anything else need improve ?

Since the AbstractTimeBasedTest will mock TimeUtil, for every test cases in this class, we may need to change long currentTime = TimeUtil.currentTimeMillis() to:

long currentTime = System.currentTimeMillis();
setCurrentMillis(currentTime);

Or the currentTime will be 0 by default.

[maoyiz]

@sczyh30 Thank you for your remind, I've modified.

[sczyh30]

LGTM

[sczyh30]

Thanks for contributing!