How to use the cwltool.utils.onWindows function in cwltool

@pytest.mark.skipif(onWindows(), reason="udocker is Linux/macOS only")  # type: ignore
@pytest.mark.parametrize("factor", test_factors)  # type: ignore
def test_bad_userspace_runtime(factor: str) -> None:
    test_file = "tests/wf/wc-tool.cwl"
    job_file = "tests/wf/wc-job.json"
    commands = factor.split()
    commands.extend(
        [
            "--user-space-docker-cmd=quaquioN",
            "--default-container=debian",
            get_data(test_file),
            get_data(job_file),
        ]
    )
    error_code, stdout, stderr = get_main_output(commands)
    assert "or quaquioN is missing or broken" in stderr, stderr
    assert error_code == 1

[ "${trueExe#-}" = "$trueExe" ] || trueExe=${trueExe#-}
  [ "${trueExe#/}" != "$trueExe" ] || trueExe=$([ -n "$ZSH_VERSION" ] && which -p "$trueExe" || which "$trueExe")
  while nextTarget=$(readlink "$trueExe"); do trueExe=$nextTarget; done
  printf '%s\n' "$(basename "$trueExe")"
} ; getTrueShellExeName""",
        ],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        env=None,
    )
    sh_name_b, sh_name_err = process.communicate()
    sh_name = sh_name_b.decode("utf-8").strip()

    assert "completed success" in stderr, (error_code, stdout, stderr)
    assert error_code == 0, (error_code, stdout, stderr)
    if onWindows():
        target = 5
    elif sh_name == "dash":
        target = 4
    else:  # bash adds "SHLVL" and "_" environment variables
        target = 6
    result = json.loads(stdout)["env_count"]
    details = ""
    if result != target:
        _, details, _ = get_main_output(["--quiet", get_data("tests/env2.cwl")])
        print(sh_name)
        print(sh_name_err)
        print(details)
    assert result == target, (error_code, sh_name, sh_name_err, details, stdout, stderr)

if "CWLTOOL_OPTIONS" in os.environ:
                addl = os.environ["CWLTOOL_OPTIONS"].split(" ")
            args = arg_parser().parse_args(addl + argsl)
            if args.record_container_id:
                if not args.cidfile_dir:
                    args.cidfile_dir = os.getcwd()
                del args.record_container_id

        if runtimeContext is None:
            runtimeContext = RuntimeContext(vars(args))
        else:
            runtimeContext = runtimeContext.copy()

        # If on Windows platform, a default Docker Container is used if not
        # explicitely provided by user
        if onWindows() and not runtimeContext.default_container:
            # This docker image is a minimal alpine image with bash installed
            # (size 6 mb). source: https://github.com/frol/docker-alpine-bash
            runtimeContext.default_container = windows_default_container_id

        # If caller parsed its own arguments, it may not include every
        # cwltool option, so fill in defaults to avoid crashing when
        # dereferencing them in args.
        for key, val in get_default_args().items():
            if not hasattr(args, key):
                setattr(args, key, val)

        configure_logging(args, stderr_handler, runtimeContext)

        if args.version:
            print(versionfunc())
            return 0

def _whoami() -> Tuple[str, str]:
    """Return the current operating system account as (username, fullname)."""
    username = getuser()
    try:
        if onWindows():
            get_user_name = ctypes.windll.secur32.GetUserNameExW  # type: ignore
            size = ctypes.pointer(ctypes.c_ulong(0))
            get_user_name(3, None, size)

            name_buffer = ctypes.create_unicode_buffer(size.contents.value)
            get_user_name(3, name_buffer, size)
            fullname = str(name_buffer.value)
        else:
            fullname = pwd.getpwuid(os.getuid())[4].split(",")[0]
    except (KeyError, IndexError):
        fullname = username

    return (username, fullname)

_logger.warning(
            "Running with support for javascript console in expressions (DO NOT USE IN PRODUCTION)"
        )
    elif context is not None:
        js_engine = "cwlNodeEngineWithContext.js"
    else:
        js_engine = "cwlNodeEngine.js"

    created_new_process = False

    if context is not None:
        nodejs = localdata.procs.get((js_engine, context))
    else:
        nodejs = localdata.procs.get(js_engine)

    if nodejs is None or nodejs.poll() is not None or onWindows():
        res = resource_stream(__name__, js_engine)
        js_engine_code = res.read().decode("utf-8")

        created_new_process = True

        new_proc = new_js_proc(js_engine_code, force_docker_pull=force_docker_pull)

        if context is None:
            localdata.procs[js_engine] = new_proc
            nodejs = new_proc
        else:
            localdata.procs[(js_engine, context)] = new_proc
            nodejs = new_proc

    killed = []

if not vol.target.startswith(container_outdir):
                # this is an input file written outside of the working
                # directory, so therefor ineligable for being an output file.
                # Thus, none of our business
                continue
            host_outdir_tgt = os.path.join(
                host_outdir, vol.target[len(container_outdir) + 1 :]
            )
            if os.path.islink(host_outdir_tgt) or os.path.isfile(host_outdir_tgt):
                try:
                    os.remove(host_outdir_tgt)
                except PermissionError:
                    pass
            elif os.path.isdir(host_outdir_tgt) and not vol.resolved.startswith("_:"):
                shutil.rmtree(host_outdir_tgt)
            if onWindows():
                # If this becomes a big issue for someone then we could
                # refactor the code to process output from a running container
                # and avoid all the extra IO below
                if vol.type in ("File", "WritableFile"):
                    shutil.copy(vol.resolved, host_outdir_tgt)
                elif vol.type in ("Directory", "WritableDirectory"):
                    copytree_with_merge(vol.resolved, host_outdir_tgt)
            elif not vol.resolved.startswith("_:"):
                try:
                    os.symlink(vol.resolved, host_outdir_tgt)
                except FileExistsError:
                    pass

def docker_compatible_realpath(self, path):  # type: (str) -> str
        if onWindows():
            if path.startswith("/"):
                return path
            return "/" + path
        return self.realpath(path)

if not user_space_docker_cmd:

            if not runtimeContext.no_read_only:
                runtime.append("--read-only=true")

            if self.networkaccess:
                if runtimeContext.custom_net:
                    runtime.append("--net={0}".format(runtimeContext.custom_net))
            else:
                runtime.append("--net=none")

            if self.stdout is not None:
                runtime.append("--log-driver=none")

            euid, egid = docker_vm_id()
            if not onWindows():
                # MS Windows does not have getuid() or geteuid() functions
                euid, egid = euid or os.geteuid(), egid or os.getgid()

            if runtimeContext.no_match_user is False and (
                euid is not None and egid is not None
            ):
                runtime.append("--user=%d:%d" % (euid, egid))

        if runtimeContext.rm_container:
            runtime.append("--rm")

        runtime.append("--env=TMPDIR=/tmp")

        # spec currently says "HOME must be set to the designated output
        # directory." but spec might change to designated temp directory.
        # runtime.append("--env=HOME=/tmp")

if default_container is not None:
                    dockerReq = {
                        "class": "DockerRequirement",
                        "dockerPull": default_container,
                    }
                    if mpiRequired:
                        self.hints.insert(0, dockerReq)
                        dockerRequired = False
                    else:
                        self.requirements.insert(0, dockerReq)
                        dockerRequired = True

                    if (
                        default_container == windows_default_container_id
                        and runtimeContext.use_container
                        and onWindows()
                    ):
                        _logger.warning(
                            DEFAULT_CONTAINER_MSG,
                            windows_default_container_id,
                            windows_default_container_id,
                        )

        if dockerReq is not None and runtimeContext.use_container:
            if mpiReq is not None:
                _logger.warning("MPIRequirement with containers is a beta feature")
            if runtimeContext.singularity:
                return SingularityCommandLineJob
            elif runtimeContext.user_space_docker_cmd:
                return UDockerCommandLineJob
            if mpiReq is not None:
                if mpiRequired:

vars_to_preserve = runtimeContext.preserve_environment
        if runtimeContext.preserve_entire_environment is not False:
            vars_to_preserve = os.environ
        if vars_to_preserve:
            for key, value in os.environ.items():
                if key in vars_to_preserve and key not in env:
                    # On Windows, subprocess env can't handle unicode.
                    env[key] = str(value) if onWindows() else value
        env["HOME"] = str(self.outdir) if onWindows() else self.outdir
        env["TMPDIR"] = str(self.tmpdir) if onWindows() else self.tmpdir
        if "PATH" not in env:
            env["PATH"] = str(os.environ["PATH"]) if onWindows() else os.environ["PATH"]
        if "SYSTEMROOT" not in env and "SYSTEMROOT" in os.environ:
            env["SYSTEMROOT"] = (
                str(os.environ["SYSTEMROOT"])
                if onWindows()
                else os.environ["SYSTEMROOT"]
            )

        stage_files(
            self.pathmapper,
            ignore_writable=True,
            symlink=True,
            secret_store=runtimeContext.secret_store,
        )
        if self.generatemapper is not None:
            stage_files(
                self.generatemapper,
                ignore_writable=self.inplace_update,
                symlink=True,
                secret_store=runtimeContext.secret_store,
            )