Update compatibility tests

compatibility_tests/test_file_compatibility.py

@@ -149,21 +149,21 @@ def env_path(asdf_version, tmp_path_factory):
 
 
 @pytest.fixture(autouse=True)
-def _pushd_tmpdir(tmpdir):
+def _pushd_tmp_path(tmp_path):
     """
     Change the working directory, in case the user is running these
     tests from the repo root.  Python will import a module from the
     current working directory by preference, so this prevents us
     from accidentally comparing the current library code to itself.
     """
     original_cwd = os.getcwd()
-    tmpdir.chdir()
+    tmp_path.chdir()
     yield
     os.chdir(original_cwd)
 
 
 @pytest.mark.remote_data()
-def test_file_compatibility(asdf_version, env_path, tmpdir):
+def test_file_compatibility(asdf_version, env_path, tmp_path):
     # Sanity check to ensure we're not accidentally comparing
     # the current code to itself.
     installed_version = get_installed_version(env_path)
@@ -188,7 +188,7 @@ def test_file_compatibility(asdf_version, env_path, tmpdir):
         # Confirm that a file generated by the current version of the code
         # can be read by the older version of the library.
         if asdf_version >= MIN_VERSION_NEW_FILES:
-            current_file_path = Path(str(tmpdir)) / "test-current.asdf"
+            current_file_path = Path(str(tmp_path)) / "test-current.asdf"
             generate_file(current_file_path, standard_version)
             assert env_run(env_path, "python3", ASSERT_SCRIPT_PATH, current_file_path, capture_output=True), (
                 f"asdf library version {asdf_version} failed to read an ASDF Standard {standard_version} "
@@ -198,7 +198,7 @@ def test_file_compatibility(asdf_version, env_path, tmpdir):
         # Confirm that a file generated by the older version of the library
         # can be read by the current version of the code.
         if asdf_version >= MIN_VERSION_OLD_FILES:
-            old_file_path = Path(str(tmpdir)) / "test-old.asdf"
+            old_file_path = Path(str(tmp_path)) / "test-old.asdf"
             assert env_run(
                 env_path,
                 "python3",