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TST: added test to ensure subclasses of ExcelWriter don't add any public attributes #50097

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Merged
merged 8 commits into from
Dec 12, 2022
Merged

TST: added test to ensure subclasses of ExcelWriter don't add any public attributes #50097

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bb08641
added test relating to issue 49602 to ensure ExcelWrtier subclasses d…
catmar22 Dec 6, 2022
c46612a
revised test for ExceWriter subclasses according to feedback from #50097
catmar22 Dec 8, 2022
0eb72a8
Merge branch 'main' into add-ioexcel-test
catmar22 Dec 8, 2022
be3c5c9
same test for ExcelWriter subclass but with pre-commit check (#50097)
catmar22 Dec 8, 2022
2dea7d9
I had to pull and it changed everything
catmar22 Dec 8, 2022
f694943
updating to same version
catmar22 Dec 8, 2022
8e07223
Merge branch 'main' into add-ioexcel-test
catmar22 Dec 11, 2022
9c5948a
Merge branch 'pandas-dev:main' into add-ioexcel-test
catmar22 Dec 11, 2022
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9 changes: 9 additions & 0 deletions pandas/tests/io/excel/test_writers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
_XlsxWriter,
register_writer,
)
from pandas.io.excel._util import _writers


@pytest.fixture
Expand Down Expand Up @@ -1351,3 +1352,11 @@ def test_excelwriter_fspath(self):
with tm.ensure_clean("foo.xlsx") as path:
with ExcelWriter(path) as writer:
assert os.fspath(writer) == str(path)


@pytest.mark.parametrize("klass", _writers.values())
def test_subclass_attr(klass):
# testing that subclasses of ExcelWriter don't have public attributes (issue 49602)
attrs_base = {name for name in dir(ExcelWriter) if not name.startswith("_")}
attrs_klass = {name for name in dir(klass) if not name.startswith("_")}
assert not attrs_base.symmetric_difference(attrs_klass)