--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/cwltool/tests/util.py	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,101 @@
+from __future__ import absolute_import
+
+import distutils.spawn  # pylint: disable=no-name-in-module,import-error
+import functools
+import os
+import sys
+import shutil
+import contextlib
+import tempfile
+import shutil
+from typing import Text
+
+from pkg_resources import (Requirement, ResolutionError,  # type: ignore
+                           resource_filename)
+import pytest
+
+from cwltool.context import LoadingContext, RuntimeContext
+from cwltool.factory import Factory
+from cwltool.resolver import Path
+from cwltool.utils import onWindows, subprocess, windows_default_container_id
+from cwltool.singularity import is_version_2_6, is_version_3_or_newer
+
+
+def get_windows_safe_factory(runtime_context=None,  # type: RuntimeContext
+                             loading_context=None,  # type: LoadingContext
+                             executor=None          # type: Any
+                            ):  # type: (...) -> Factory
+    if onWindows():
+        if not runtime_context:
+            runtime_context = RuntimeContext()
+        runtime_context.find_default_container = functools.partial(
+            force_default_container, windows_default_container_id)
+        runtime_context.use_container = True
+        runtime_context.default_container = windows_default_container_id
+    return Factory(executor, loading_context, runtime_context)
+
+def force_default_container(default_container_id, _):
+    return default_container_id
+
+def get_data(filename):
+    # normalizing path depending on OS or else it will cause problem when joining path
+    filename = os.path.normpath(filename)
+    filepath = None
+    try:
+        filepath = resource_filename(
+            Requirement.parse("cwltool"), filename)
+    except ResolutionError:
+        pass
+    if not filepath or not os.path.isfile(filepath):
+        filepath = os.path.join(os.path.dirname(__file__), os.pardir, filename)
+    return Text(Path(filepath).resolve())
+
+
+needs_docker = pytest.mark.skipif(not bool(distutils.spawn.find_executable('docker')),
+                                  reason="Requires the docker executable on the "
+                                  "system path.")
+
+needs_singularity = pytest.mark.skipif(
+    not bool(distutils.spawn.find_executable('singularity')),
+    reason="Requires the singularity executable on the system path.")
+
+needs_singularity_2_6 = pytest.mark.skipif(
+    not (distutils.spawn.find_executable('singularity') and is_version_2_6()),
+    reason="Requires that version 2.6.x of singularity executable version is on the system path.")
+
+needs_singularity_3_or_newer = pytest.mark.skipif(
+    not (distutils.spawn.find_executable('singularity') and is_version_3_or_newer),
+    reason="Requires that version 2.6.x of singularity executable version is on the system path.")
+
+
+windows_needs_docker = pytest.mark.skipif(
+    onWindows() and not bool(distutils.spawn.find_executable('docker')),
+    reason="Running this test on MS Windows requires the docker executable "
+    "on the system path.")
+
+def get_main_output(args, env=None):
+    process = subprocess.Popen(
+        [sys.executable, "-m", "cwltool"] + args,
+        stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
+
+    stdout, stderr = process.communicate()
+    return process.returncode, stdout.decode(), stderr.decode()
+
+@contextlib.contextmanager
+def temp_dir(suffix=""):
+    c_dir = tempfile.mkdtemp(suffix, dir=os.curdir)
+    try:
+        yield c_dir
+    finally:
+        shutil.rmtree(c_dir, ignore_errors=True)
+
+@contextlib.contextmanager
+def working_directory(path):
+    """Change working directory and returns to previous on exit."""
+    prev_cwd = Path.cwd()
+    # before python 3.6 chdir doesn't support paths from pathlib
+    os.chdir(str(path))
+    try:
+        yield
+    finally:
+        os.chdir(str(prev_cwd))