TST: regression test for GH#56853 (insert/delete with MultiIndex datetime)

[skalwaghe-56]

• closes BUG: Insert then delete column into MultiIndex with timestamps leads to RecursionError #56853
• Tests added and passed
• All code checks passed.

---

This PR adds a regression test for a bug where inserting and then deleting
a column in a DataFrame with two-level MultiIndex columns (with a Timestamp
level) used to raise a RecursionError.

The bug is already fixed on main, but this test makes sure it won’t come back.

Test location: pandas/tests/frame/indexing/test_insert.py
Test method: TestDataFrameInsert.test_insert_delete_mixed_multiindex_columns

[skalwaghe-56]

Hi, I've opened a PR which adds a regression test for this issue: #56853.

[skalwaghe-56]

All checks have passed, I request one of the members to review the changes and kindly merge this PR. Thanks :)

[rhshadrach]

Thanks for the PR!

[skalwaghe-56]

Hi @rhshadrach,

Thanks for the review! I’ve updated the test as suggested.

Please let me know if there’s anything else I should adjust.

[skalwaghe-56]

@rhshadrach This is ready for a review after the checks are done!

[skalwaghe-56]

@rhshadrach Its ready for re-review.

[skalwaghe-56]

@rhshadrach Rebased it and all the checks have been passed!

[Aniketsy]

@skalwaghe-56 Thanks for the contribution! Please be patient maintainers will review and provide feedback when they have time. No need to repeatedly request reviews.

[skalwaghe-56]

@Aniketsy Thanks for your comment will wait!

[jorisvandenbossche]

Looks good to me, thanks!

[skalwaghe-56]

Looks good to me, thanks!

Thank you!

[rhshadrach]

lgtm

[rhshadrach]

Thanks @skalwaghe-56!

[skalwaghe-56]

Thank you! @rhshadrach