Function test_reveal

numpy/typing/tests/test_typing.py:232–244

Validate that mypy correctly infers the return-types of the expressions in `path`.

(path: str)

@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
@pytest.mark.parametrize("path", get_test_cases(REVEAL_DIR))
def test_reveal(path: str) -> None:
    """Validate that mypy correctly infers the return-types of
    the expressions in `path`.
    """
    __tracebackhide__ = True

    output_mypy = OUTPUT_MYPY
    if path not in output_mypy:
        return

    for error_line in output_mypy[path]:
        lineno, error_line = _strip_filename(error_line)
        raise AssertionError(_REVEAL_MSG.format(lineno, error_line))


@pytest.mark.slow