tests, expression: move integration test in expression pkg to tests/integrationtest

[Defined2014]

What problem does this PR solve?

Issue Number: close #46679

Problem Summary: This is the last part in expression pkg. Move 19 test cases.

What is changed and how it works?

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 @Defined2014. Thanks for your PR.

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[hawkingrei]

/ok-to-test

[codecov]

Codecov Report

Merging #47059 (71e33a2) into master (35add6f) will decrease coverage by 0.3720%.
Report is 2 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #47059        +/-   ##
================================================
- Coverage   73.0786%   72.7066%   -0.3720%     
================================================
  Files          1336       1357        +21     
  Lines        398226     404535      +6309     
================================================
+ Hits         291018     294124      +3106     
- Misses        88467      91743      +3276     
+ Partials      18741      18668        -73     

Flag	Coverage Δ
integration	30.4996% <ø> (?)
unit	73.0544% <ø> (-0.0242%)	⬇️

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

Components	Coverage Δ
dumpling	53.9913% <ø> (ø)
parser	84.9620% <ø> (-0.0252%)	⬇️
br	48.6835% <ø> (-4.2565%)	⬇️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, xhebox

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-09-18 07:54:36.096330827 +0000 UTC m=+504042.063918875: ☑️ agreed by hawkingrei.
• 2023-09-18 09:23:30.412082165 +0000 UTC m=+509376.379670199: ☑️ agreed by xhebox.