name : test_warnings.py from inspect import cleandoc import pytest from setuptools.warnings import SetuptoolsDeprecationWarning, SetuptoolsWarning _EXAMPLES = { "default": dict( args=("Hello {x}", "\n\t{target} {v:.1f}"), kwargs={"x": 5, "v": 3, "target": "World"}, expected=""" Hello 5 !! ******************************************************************************** World 3.0 ******************************************************************************** !! """, ), "futue_due_date": dict( args=("Summary", "Lorem ipsum"), kwargs={"due_date": (9999, 11, 22)}, expected=""" Summary !! ******************************************************************************** Lorem ipsum By 9999-Nov-22, you need to update your project and remove deprecated calls or your builds will no longer be supported. ******************************************************************************** !! """, ), "past_due_date_with_docs": dict( args=("Summary", "Lorem ipsum"), kwargs={"due_date": (2000, 11, 22), "see_docs": "some_page.html"}, expected=""" Summary !! ******************************************************************************** Lorem ipsum This deprecation is overdue, please update your project and remove deprecated calls to avoid build errors in the future. See https://setuptools.pypa.io/en/latest/some_page.html for details. ******************************************************************************** !! """, ), } @pytest.mark.parametrize("example_name", _EXAMPLES.keys()) def test_formatting(monkeypatch, example_name): """ It should automatically handle indentation, interpolation and things like due date. """ args = _EXAMPLES[example_name]["args"] kwargs = _EXAMPLES[example_name]["kwargs"] expected = _EXAMPLES[example_name]["expected"] monkeypatch.setenv("SETUPTOOLS_ENFORCE_DEPRECATION", "false") with pytest.warns(SetuptoolsWarning) as warn_info: SetuptoolsWarning.emit(*args, **kwargs) assert _get_message(warn_info) == cleandoc(expected) def test_due_date_enforcement(monkeypatch): class _MyDeprecation(SetuptoolsDeprecationWarning): _SUMMARY = "Summary" _DETAILS = "Lorem ipsum" _DUE_DATE = (2000, 11, 22) _SEE_DOCS = "some_page.html" monkeypatch.setenv("SETUPTOOLS_ENFORCE_DEPRECATION", "true") with pytest.raises(SetuptoolsDeprecationWarning) as exc_info: _MyDeprecation.emit() expected = """ Summary !! ******************************************************************************** Lorem ipsum This deprecation is overdue, please update your project and remove deprecated calls to avoid build errors in the future. See https://setuptools.pypa.io/en/latest/some_page.html for details. ******************************************************************************** !! """ assert str(exc_info.value) == cleandoc(expected) def _get_message(warn_info): return next(warn.message.args[0] for warn in warn_info)