pass pathlib.Path objects through on Python 3.7+

subprocess cwd= parameter supports path-like objects on all platforms
from 3.7 onwards

Author: Anthchirp

procrunner/__init__.py

@@ -496,11 +496,13 @@ def run(
     command = tuple(_path_resolve(part) for part in command)
     if win32resolve and sys.platform == "win32":
         command = _windows_resolve(command)
+    if working_directory and sys.version_info < (3, 7):
+        working_directory = os.fspath(working_directory)
 
     p = subprocess.Popen(
         command,
         shell=False,
-        cwd=_path_resolve(working_directory),
+        cwd=working_directory,
         env=env,
         stdin=stdin_pipe,
         stdout=subprocess.PIPE,

tests/test_procrunner.py

@@ -1,6 +1,7 @@
 import copy
 import mock
 import os
+import pathlib
 import procrunner
 import pytest
 import sys
@@ -87,13 +88,16 @@ def streamreader_processing(*args, **kwargs):
         False,
         callback_stdout=mock.sentinel.callback_stdout,
         callback_stderr=mock.sentinel.callback_stderr,
-        working_directory=mock.sentinel.cwd,
+        working_directory=pathlib.Path("somecwd"),
         raise_timeout_exception=True,
     )
 
     assert mock_subprocess.Popen.called
     assert mock_subprocess.Popen.call_args[1]["env"] == os.environ
-    assert mock_subprocess.Popen.call_args[1]["cwd"] == mock.sentinel.cwd
+    assert mock_subprocess.Popen.call_args[1]["cwd"] in (
+        pathlib.Path("somecwd"),
+        "somecwd",
+    )
     mock_streamreader.assert_has_calls(
         [
             mock.call(