infoschema: more tests for applyDiff

[ywqzzy]

What problem does this PR solve?

Issue Number: ref #50959

Problem Summary:

What changed and how does it work?

Add cases for modify table.

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 @ywqzzy. Thanks for your PR.

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[codecov]

Codecov Report

Merging #51463 (bdd532a) into master (1d24b1c) will increase coverage by 2.1499%.
Report is 16 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #51463        +/-   ##
================================================
+ Coverage   70.6992%   72.8492%   +2.1499%     
================================================
  Files          1462       1463         +1     
  Lines        435224     438709      +3485     
================================================
+ Hits         307700     319596     +11896     
+ Misses       108234      98967      -9267     
- Partials      19290      20146       +856     

Flag	Coverage Δ
integration	48.8820% <ø> (?)
unit	70.4643% <ø> (-0.0355%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	51.3793% <ø> (+5.5250%)	⬆️

[GMHDBJD]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• pkg/infoschema/OWNERS [GMHDBJD,wjhuang2016]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-03-04 07:15:49.554175892 +0000 UTC m=+64976.576422280: ☑️ agreed by wjhuang2016.
• 2024-03-04 09:35:43.911674285 +0000 UTC m=+73370.933920673: ☑️ agreed by GMHDBJD.