infoschema_v2: add ut test Data struct fields' correctness

[fzzf678]

What problem does this PR solve?

Issue Number: ref #50959

Problem Summary:

What changed and how does it work?

No logical change.
Test Data struct's fields correctness after bootstrap and in schema change.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @fzzf678. Thanks for your PR.

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[fzzf678]

/ok-to-test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.8438%. Comparing base (87244ed) to head (0ec7866).
Report is 2 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #55709        +/-   ##
================================================
+ Coverage   72.9679%   74.8438%   +1.8759%     
================================================
  Files          1582       1582                
  Lines        442744     442889       +145     
================================================
+ Hits         323061     331475      +8414     
+ Misses        99932      91158      -8774     
- Partials      19751      20256       +505     

Flag	Coverage Δ
integration	49.0057% <ø> (?)
unit	71.9925% <ø> (-0.1177%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.9567% <ø> (ø)
parser	∅ <ø> (∅)
br	52.3355% <ø> (+6.8671%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CbcWestwolf, wjhuang2016

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Needs approval from an approver in each of these files:

• pkg/infoschema/OWNERS [wjhuang2016]
• pkg/meta/OWNERS [wjhuang2016]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-28 06:26:48.790881211 +0000 UTC m=+938003.925331327: ☑️ agreed by wjhuang2016.
• 2024-08-28 06:33:09.824781173 +0000 UTC m=+938384.959231294: ☑️ agreed by CbcWestwolf.