PymatgenTest add @pytest.fixture(autouse=True)

    def _tmp_dir(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:

make all tests run a in a temporary directory accessible via self.tmp_path

Author: janosh

pymatgen/util/testing.py

@@ -13,6 +13,7 @@
 import unittest
 from pathlib import Path
 
+import pytest
 from monty.json import MontyDecoder, MSONable
 from monty.serialization import loadfn
 from numpy.testing import assert_allclose
@@ -44,6 +45,12 @@ class PymatgenTest(unittest.TestCase):
     for fn in STRUCTURES_DIR.iterdir():
         TEST_STRUCTURES[fn.name.rsplit(".", 1)[0]] = loadfn(str(fn))
 
+    @pytest.fixture(autouse=True)  # make all tests run a in a temporary directory accessible via self.tmp_path
+    def _tmp_dir(self, tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+        # https://pytest.org/en/latest/how-to/unittest.html#using-autouse-fixtures-and-accessing-other-fixtures
+        monkeypatch.chdir(tmp_path)  # change to pytest-provided temporary directory
+        self.tmp_path = tmp_path
+
     @classmethod
     def get_structure(cls, name: str) -> Structure:
         """