Description
Many of the extension arrays tests are skipped for Categorical because the reconstruction of the expected result does not preserve the categoricals (so kind of the "metadata" of the dtype).
For example:
pandas/pandas/tests/extension/category/test_categorical.py
Lines 70 to 72 in 78fee04
because in the actual test, the expected result is constructed from a list:
pandas/pandas/tests/extension/base/reshaping.py
Lines 47 to 50 in 78fee04
(still with type(data)(..), but replacing that with data._constructor_from_sequence(..) in #20746).
This is kind of a recurrent pattern, so that might indicate we should find a solution for this?
So do we want a canonical way in the extension array interface to construct an ExtensionArray that has a certain dtype?
Possible solution is to add a dtype keyword to _constructor_from_sequence