How to use the httpie.status.ExitStatus function in httpie

def test_cert_file_not_found(self, httpbin_secure):
        r = http(httpbin_secure + '/get',
                 '--cert', '/__not_found__',
                 tolerate_error_exit_status=True)
        assert r.exit_status == ExitStatus.ERROR
        assert 'No such file or directory' in r.stderr

def test_max_redirects(httpbin):
    r = http(
        '--max-redirects=1',
        '--follow',
        httpbin.url + '/redirect/3',
        tolerate_error_exit_status=True,
    )
    assert r.exit_status == ExitStatus.ERROR_TOO_MANY_REDIRECTS

class BaseCLIResponse:
    """
    Represents the result of simulated `$ http' invocation via `http()`.

    Holds and provides access to:

        - stdout output: print(self)
        - stderr output: print(self.stderr)
        - exit_status output: print(self.exit_status)

    """
    stderr: str = None
    json: dict = None
    exit_status: ExitStatus = None


class BytesCLIResponse(bytes, BaseCLIResponse):
    """
    Used as a fallback when a StrCLIResponse cannot be used.

    E.g. when the output contains binary data or when it is colorized.

    `.json` will always be None.

    """


class StrCLIResponse(str, BaseCLIResponse):

    @property

def test_keyboard_interrupt_during_arg_parsing_exit_status(httpbin):
    with mock.patch('httpie.cli.definition.parser.parse_args',
                    side_effect=KeyboardInterrupt()):
        r = http('GET', httpbin.url + '/get', tolerate_error_exit_status=True)
        assert r.exit_status == ExitStatus.ERROR_CTRL_C

def main():
    try:
        from .core import main
        exit_status = main()
    except KeyboardInterrupt:
        from httpie.status import ExitStatus
        exit_status = ExitStatus.ERROR_CTRL_C

    sys.exit(exit_status.value)

)

        if downloader and exit_status == ExitStatus.SUCCESS:
            # Last response body download.
            download_stream, download_to = downloader.start(
                initial_url=initial_request.url,
                final_response=final_response,
            )
            write_stream(
                stream=download_stream,
                outfile=download_to,
                flush=False,
            )
            downloader.finish()
            if downloader.interrupted:
                exit_status = ExitStatus.ERROR
                env.log_error(
                    'Incomplete download: size=%d; downloaded=%d' % (
                        downloader.status.total_size,
                        downloader.status.downloaded
                    ))
        return exit_status

    finally:
        if downloader and not downloader.finished:
            downloader.failed()

        if (not isinstance(args, list) and args.output_file
                and args.output_file_specified):
            args.output_file.close()

def http_status_to_exit_status(http_status: int, follow=False) -> ExitStatus:
    """
    Translate HTTP status code to exit status code.

    (Relevant only when invoked with --check-status or --download.)

    """
    if 300 <= http_status <= 399 and not follow:
        # Redirect
        return ExitStatus.ERROR_HTTP_3XX
    elif 400 <= http_status <= 499:
        # Client Error
        return ExitStatus.ERROR_HTTP_4XX
    elif 500 <= http_status <= 599:
        # Server Error
        return ExitStatus.ERROR_HTTP_5XX
    else:
        return ExitStatus.SUCCESS

def http_status_to_exit_status(http_status: int, follow=False) -> ExitStatus:
    """
    Translate HTTP status code to exit status code.

    (Relevant only when invoked with --check-status or --download.)

    """
    if 300 <= http_status <= 399 and not follow:
        # Redirect
        return ExitStatus.ERROR_HTTP_3XX
    elif 400 <= http_status <= 499:
        # Client Error
        return ExitStatus.ERROR_HTTP_4XX
    elif 500 <= http_status <= 599:
        # Server Error
        return ExitStatus.ERROR_HTTP_5XX
    else:
        return ExitStatus.SUCCESS