Only skip _pytest.pathlib if it is actually present

- see #669

Author: mrbean-bremen

CHANGES.md

@@ -3,6 +3,10 @@ The released versions correspond to PyPi releases.
 
 ## Unreleased
 
+### Fixes
+* only skip `_pytest.pathlib` in pytest versions where it is actually present
+  (see [#669](../../issues/669))
+
 ## [Version 4.5.5](https://pypi.python.org/pypi/pyfakefs/4.5.5) (2022-02-14)
 Bugfix release, needed for compatibility with pytest 7.0.
 

pyfakefs/pytest_plugin.py

@@ -16,7 +16,8 @@ def my_fakefs_test(fs):
 
 Patcher.SKIPMODULES.add(py)
 Patcher.SKIPMODULES.add(pytest)
-Patcher.SKIPMODULES.add(_pytest.pathlib)
+if hasattr(_pytest, "pathlib"):
+    Patcher.SKIPMODULES.add(_pytest.pathlib)
 
 
 @pytest.fixture