Exclude pytest pathlib module from patching (#828)

- fixes some specific tests in namespace packages
- fixes #814

3 files changed, 14 insertions, 0 deletions

diff --git a/pyfakefs/pytest_plugin.py b/pyfakefs/pytest_plugin.py
index da9cf3d..0ecdd0e 100644
--- a/pyfakefs/pytest_plugin.py
+++ b/pyfakefs/pytest_plugin.py
@@ -13,8 +13,15 @@ import pytest
 
 from pyfakefs.fake_filesystem_unittest import Patcher
 
+try:
+    from _pytest import pathlib
+except ImportError:
+    pathlib = None
+
 Patcher.SKIPMODULES.add(py)
 Patcher.SKIPMODULES.add(pytest)
+if pathlib is not None:
+    Patcher.SKIPMODULES.add(pathlib)
 
 
 @pytest.fixture
diff --git a/pyfakefs/pytest_tests/ns_package/test/ns_package/test/test_file.py b/pyfakefs/pytest_tests/ns_package/test/ns_package/test/test_file.py
new file mode 100644
index 0000000..c73b8d6
--- /dev/null
+++ b/pyfakefs/pytest_tests/ns_package/test/ns_package/test/test_file.py
@@ -0,0 +1,7 @@
+import pyfakefs.fake_filesystem
+
+
+def test_foo(fs):
+    """Regression test for #814 - must run in namespace package with cli logging."""
+    fs.os = pyfakefs.fake_filesystem.OSType.WINDOWS
+    assert True
diff --git a/pyfakefs/pytest_tests/ns_package/test/setup.py b/pyfakefs/pytest_tests/ns_package/test/setup.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/pyfakefs/pytest_tests/ns_package/test/setup.py