The test is hard to read and hard to understand. We should refactor it to make it more straightforward without those parametrizations. Pending #49442
Comment From: shogohida
Hi @phofl, I want to work on this! However, I'm not very sure how to refactor the test because I'm new to Pandas. Could you give me some advice? It would be really helpful
Comment From: phofl
It would be helpful to remove the parametrisation and split the content into two tests so that it is easier to read. But would be good to wait till the linked pr is merged, because it changed the behavior of the test
Comment From: shogohida
take
Comment From: shogohida
Thanks for your comment! Now I understand that I need to separate result and expected. I will wait until the linked PR is merged
https://github.com/pandas-dev/pandas/blob/a551f1b7b0aeace5d3c6a1c629dce5442fcee85b/pandas/tests/indexing/multiindex/test_multiindex.py#L187-L215
Comment From: shogohida
Some tests failed but I wanted to make sure if my understanding is correct at first. Can you have a look?
https://github.com/pandas-dev/pandas/pull/49698