import sys from _pytest.pytester import Pytester import pytest PYPY = hasattr(sys, "pypy_version_info") @pytest.mark.skipif(PYPY, reason="garbage-collection differences make this flaky") @pytest.mark.filterwarnings("default::pytest.PytestUnraisableExceptionWarning") def test_unraisable(pytester: Pytester) -> None: pytester.makepyfile( test_it=""" class BrokenDel: def __del__(self): raise ValueError("del is broken") def test_it(): obj = BrokenDel() del obj def test_2(): pass """ ) result = pytester.runpytest() assert result.ret == 0 assert result.parseoutcomes() == {"passed": 2, "warnings": 1} result.stdout.fnmatch_lines( [ "*= warnings summary =*", "test_it.py::test_it", " * PytestUnraisableExceptionWarning: Exception ignored in: ", " ", " Traceback (most recent call last):", " ValueError: del is broken", " ", " warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))", ] ) @pytest.mark.skipif(PYPY, reason="garbage-collection differences make this flaky") @pytest.mark.filterwarnings("default::pytest.PytestUnraisableExceptionWarning") def test_unraisable_in_setup(pytester: Pytester) -> None: pytester.makepyfile( test_it=""" import pytest class BrokenDel: def __del__(self): raise ValueError("del is broken") @pytest.fixture def broken_del(): obj = BrokenDel() del obj def test_it(broken_del): pass def test_2(): pass """ ) result = pytester.runpytest() assert result.ret == 0 assert result.parseoutcomes() == {"passed": 2, "warnings": 1} result.stdout.fnmatch_lines( [ "*= warnings summary =*", "test_it.py::test_it", " * PytestUnraisableExceptionWarning: Exception ignored in: ", " ", " Traceback (most recent call last):", " ValueError: del is broken", " ", " warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))", ] ) @pytest.mark.skipif(PYPY, reason="garbage-collection differences make this flaky") @pytest.mark.filterwarnings("default::pytest.PytestUnraisableExceptionWarning") def test_unraisable_in_teardown(pytester: Pytester) -> None: pytester.makepyfile( test_it=""" import pytest class BrokenDel: def __del__(self): raise ValueError("del is broken") @pytest.fixture def broken_del(): yield obj = BrokenDel() del obj def test_it(broken_del): pass def test_2(): pass """ ) result = pytester.runpytest() assert result.ret == 0 assert result.parseoutcomes() == {"passed": 2, "warnings": 1} result.stdout.fnmatch_lines( [ "*= warnings summary =*", "test_it.py::test_it", " * PytestUnraisableExceptionWarning: Exception ignored in: ", " ", " Traceback (most recent call last):", " ValueError: del is broken", " ", " warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))", ] ) @pytest.mark.filterwarnings("error::pytest.PytestUnraisableExceptionWarning") def test_unraisable_warning_error(pytester: Pytester) -> None: pytester.makepyfile( test_it=f""" class BrokenDel: def __del__(self) -> None: raise ValueError("del is broken") def test_it() -> None: obj = BrokenDel() del obj {"import gc; gc.collect()" * PYPY} def test_2(): pass """ ) result = pytester.runpytest() assert result.ret == pytest.ExitCode.TESTS_FAILED assert result.parseoutcomes() == {"passed": 1, "failed": 1}