[TEST] Add more unit tests in rss-common

[kaijchen]

What changes were proposed in this pull request?

Add more unit tests in rss-common.

Why are the changes needed?

Improve coverage.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

By CI.

[codecov-commenter]

Codecov Report

Merging #63 (10d051d) into master (bdffcaa) will increase coverage by 1.26%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master      #63      +/-   ##
============================================
+ Coverage     55.15%   56.41%   +1.26%     
- Complexity     1112     1173      +61     
============================================
  Files           149      149              
  Lines          7969     7968       -1     
  Branches        761      761              
============================================
+ Hits           4395     4495     +100     
+ Misses         3332     3231     -101     
  Partials        242      242              

Impacted Files	Coverage Δ
...he/uniffle/client/impl/ShuffleWriteClientImpl.java	26.05% <0.00%> (+0.09%)	⬆️
.../java/org/apache/uniffle/common/BufferSegment.java	100.00% <0.00%> (+3.84%)	⬆️
.../org/apache/uniffle/common/ShuffleIndexResult.java	100.00% <0.00%> (+14.28%)	⬆️
...apache/uniffle/common/ShufflePartitionedBlock.java	70.58% <0.00%> (+35.29%)	⬆️
...ava/org/apache/uniffle/common/RssShuffleUtils.java	93.33% <0.00%> (+46.66%)	⬆️
...a/org/apache/uniffle/common/ShuffleDataResult.java	81.81% <0.00%> (+81.81%)	⬆️
.../apache/uniffle/common/ShufflePartitionedData.java	81.81% <0.00%> (+81.81%)	⬆️
...va/org/apache/uniffle/common/ShuffleBlockInfo.java	87.17% <0.00%> (+87.17%)	⬆️
...a/org/apache/uniffle/common/ShuffleServerInfo.java	100.00% <0.00%> (+100.00%)	⬆️
...org/apache/uniffle/common/ShuffleRegisterInfo.java	100.00% <0.00%> (+100.00%)	⬆️

[jerqi]

LGTM

[kaijchen]

Thanks @jerqi for the review.