Method test_as_contextmanager

testing/test_recwarn.py:291–337

(self)

                    warnings.warn("w3", UserWarning)

    def test_as_contextmanager(self) -> None:
        with pytest.warns(RuntimeWarning):
            warnings.warn("runtime", RuntimeWarning)

        with pytest.warns(UserWarning):
            warnings.warn("user", UserWarning)

        with pytest.warns():
            with pytest.raises(pytest.fail.Exception) as excinfo:
                with pytest.warns(RuntimeWarning):
                    warnings.warn("user", UserWarning)
        excinfo.match(
            r"DID NOT WARN. No warnings of type \(.+RuntimeWarning.+,\) were emitted.\n"
            r" Emitted warnings: \[UserWarning\('user',?\)\]."
        )

        with pytest.warns():
            with pytest.raises(pytest.fail.Exception) as excinfo:
                with pytest.warns(UserWarning):
                    warnings.warn("runtime", RuntimeWarning)
        excinfo.match(
            r"DID NOT WARN. No warnings of type \(.+UserWarning.+,\) were emitted.\n"
            r" Emitted warnings: \[RuntimeWarning\('runtime',?\)]."
        )

        with pytest.raises(pytest.fail.Exception) as excinfo:
            with pytest.warns(UserWarning):
                pass
        excinfo.match(
            r"DID NOT WARN. No warnings of type \(.+UserWarning.+,\) were emitted.\n"
            r" Emitted warnings: \[\]."
        )

        warning_classes = (UserWarning, FutureWarning)
        with pytest.warns():
            with pytest.raises(pytest.fail.Exception) as excinfo:
                with pytest.warns(warning_classes) as warninfo:
                    warnings.warn("runtime", RuntimeWarning)
                    warnings.warn("import", ImportWarning)

        messages = [each.message for each in warninfo]
        expected_str = (
            f"DID NOT WARN. No warnings of type {warning_classes} were emitted.\n"
            f" Emitted warnings: {messages}."
        )

        assert str(excinfo.value) == expected_str

    def test_record(self) -> None:
        with pytest.warns(UserWarning) as record: