Function test_fail

numpy/typing/tests/test_typing.py:159–191

(path: str)

@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
@pytest.mark.parametrize("path", get_test_cases(FAIL_DIR))
def test_fail(path: str) -> None:
    __tracebackhide__ = True

    with open(path) as fin:
        lines = fin.readlines()

    errors = defaultdict(lambda: "")

    output_mypy = OUTPUT_MYPY
    assert path in output_mypy

    for error_line in output_mypy[path]:
        lineno, error_line = _strip_filename(error_line)
        errors[lineno] += f'{error_line}\n'

    for i, line in enumerate(lines):
        lineno = i + 1
        if (
            line.startswith('#')
            or (" E:" not in line and lineno not in errors)
        ):
            continue

        target_line = lines[lineno - 1]
        if "# E:" in target_line:
            expression, _, marker = target_line.partition("  # E: ")
            expected_error = errors[lineno].strip()
            marker = marker.strip()
            _test_fail(path, expression, marker, expected_error, lineno)
        else:
            pytest.fail(
                f"Unexpected mypy output at line {lineno}\n\n{errors[lineno]}"
            )


_FAIL_MSG1 = """Extra error at line {}