use tmp_path instead of tmp_dir

tests/conftest.py

@@ -1,7 +1,6 @@
 import pytest
 import os
 import glob
-import tempfile
 from shutil import copyfile, copy
 
 import westpa
@@ -30,13 +29,13 @@ def clear_state():
 
 
 @pytest.fixture
-def ref_3iter(request):
+def ref_3iter(request, tmp_path):
     """
     Fixture that prepares a simulation directory with a completed 3-iteration WESTPA,
     west.h5, plus the config file west.cfg
     """
 
-    test_dir = tempfile.mkdtemp()
+    test_dir = str(tmp_path)
     os.chdir(test_dir)
 
     copy_ref(test_dir)
@@ -53,12 +52,12 @@ def ref_3iter(request):
 
 
 @pytest.fixture
-def ref_cfg(request, tmpdir):
+def ref_cfg(request, tmp_path):
     """
     Fixture that prepares a simulation directory with a populated west.cfg file.
     """
 
-    test_dir = str(tmpdir)
+    test_dir = str(tmp_path)
     os.chdir(test_dir)
 
     copy_ref(test_dir)
@@ -77,13 +76,13 @@ def ref_cfg(request, tmpdir):
 
 
 @pytest.fixture
-def ref_initialized(request, tmpdir):
+def ref_initialized(request, tmp_path):
     """
     Fixture that prepares a simulation directory with an initialized WESTPA system,
     west.h5, plus the config file west.cfg
     """
 
-    test_dir = str(tmpdir)
+    test_dir = str(tmp_path)
 
     os.chdir(test_dir)
     copy_ref(test_dir)
@@ -101,13 +100,13 @@ def ref_initialized(request, tmpdir):
 
 
 @pytest.fixture
-def ref_50iter(request, tmpdir):
+def ref_50iter(request, tmp_path):
     """
     Fixture that prepares a simulation directory with a completed 50-iteration WESTPA,
     west.h5, plus the config file west.cfg
     """
 
-    test_dir = str(tmpdir)
+    test_dir = str(tmp_path)
 
     os.chdir(test_dir)
     copy_ref(test_dir)
@@ -125,13 +124,13 @@ def ref_50iter(request, tmpdir):
 
 
 @pytest.fixture
-def ref_multi(request, tmpdir):
+def ref_multi(request, tmp_path):
     """
     Fixture that prepares a simulation directory for w_multi_west, including a master
     folder with sub folders 01, 02, 03 containing west_aux_ref.h5 renamed as west.h5.
     """
 
-    test_dir = str(tmpdir)
+    test_dir = str(tmp_path)
 
     os.chdir(test_dir)
     copy_ref(test_dir)
@@ -155,13 +154,13 @@ def ref_multi(request, tmpdir):
 
 
 @pytest.fixture
-def ref_multi_noaux(request, tmpdir):
+def ref_multi_noaux(request, tmp_path):
     """
     Fixture that prepares a simulation directory for w_multi_west, including a master
     folder with sub folders 01, 02, 03 containing west_aux_ref.h5 renamed as west.h5.
     """
 
-    test_dir = str(tmpdir)
+    test_dir = str(tmp_path)
 
     os.chdir(test_dir)
     copy_ref(test_dir)
@@ -185,11 +184,11 @@ def ref_multi_noaux(request, tmpdir):
 
 
 @pytest.fixture
-def ref_idtype(request):
+def ref_idtype(request, tmp_path):
     """
     Fixture that prepares the west.h5 file and also links in the "correct" istate dtype array.
     """
-    test_dir = tempfile.mkdtemp()
+    test_dir = str(tmp_path)
     os.chdir(test_dir)
 
     copy_ref(test_dir)
@@ -206,12 +205,12 @@ def ref_idtype(request):
 
 
 @pytest.fixture
-def ref_executable(request, tmpdir):
+def ref_executable(request, tmp_path):
     """
     Fixture that prepares a simulation directory with a populated west_executable.cfg file.
     """
 
-    test_dir = str(tmpdir)
+    test_dir = str(tmp_path)
     os.chdir(test_dir)
 
     copy_ref(test_dir)