TST: Replace `ensure_clean` utility function with the `temp_file` pytest fixture

[mroeschke]

The pandas test suite uses an ensure_clean utility function to create a temporary file for testing

pandas/pandas/_testing/contexts.py

Line 101 in 22bae73

def ensure_clean(filename=None) -> Generator[Any]:

This utility should be largely redundant with the temp_file pytest fixture

pandas/pandas/conftest.py

Line 2105 in 22bae73

def temp_file(tmp_path):

Since there are about ~180 occurrences of ensure_clean in the code base, this issue should be completed in multiple PRs that replaces ensure_clean with temp_file in a particular file. Therefore, this issue can be worked on by multiple contributors.

For those interested in working on this issue:

1. Comment below on which file in pandas/tests you'll be working on.
2. Submit a PR that replace ensure_clean with temp_file which still passes the tests.

When submitting a PR for a fix:

• If a test doesn't appear to explicitly need to test a str file argument, please change the test to use temp_file directly (i.e. avoid doing str(temp_file) if not needed)
• If a test requires a specific file name or extension (e.g. .xls), please construct an argument using the pytest tmp_path fixture instead (e.g. path = tmp_path / "tmp.xls")

Once all the uses of ensure_clean are replaced, a separate PR to remove ensure_clean would be welcome.

[pandeconscious]

I will be working on the following files:

pandas/tests/frame/methods/test_to_csv.py
pandas/tests/io/formats/test_to_csv.py
pandas/tests/io/test_parquet.py

[ritoban23]

I would like to work on :

• pandas/tests/io/test_compression.py
• pandas/tests/io/test_pickle.py
• pandas/tests/io/xml/test_to_xml.py

[kianelbo]

I'm doing:

• pandas/tests/io/test_sql.py
• pandas/tests/io/parser/test_index_col.py
• pandas/tests/io/parser/test_python_parser_only.py
• pandas/tests/io/parser/common/test_chunksize.py
• pandas/tests/io/parser/common/test_iterator.py
• pandas/tests/io/parser/pytables/test_round_trip.py

[jsngn]

I'm working on these files:

• pandas/tests/io/test_feather.py
• pandas/tests/io/test_orc.py
• pandas/tests/io/formats/test_to_latex.py
• pandas/tests/io/formats/style/test_style.py
• pandas/tests/io/json/test_readlines.py

[pandeconscious]

PR for the files I picked up: #62461

[sanggon6107]

I would like to work on these files :

• pandas/tests/io/json/test_compression.py
• pandas/tests/io/json/test_pandas.py

[mrkarna]

I would like to work on these files to start with:

• pandas/tests/io/xml/test_xml_dtypes.py
• pandas/tests/io/parser/test_encoding.py

[scobioala]

UPDATES:

• Working on pandas\tests\io\xml\test_xml.py