Function assertRaises

Lib/test/audit-tests.py:74–81

(ex_type)

@contextlib.contextmanager
def assertRaises(ex_type):
    try:
        yield
        assert False, f"expected {ex_type}"
    except BaseException as ex:
        if isinstance(ex, AssertionError):
            raise
        assert type(ex) is ex_type, f"{ex} should be {ex_type}"


def test_basic():