Adapt handling of pathlib.Path.lchmod

- it calls chmod() in Python 3.10, so this has to handled

Author: mrbean-bremen

pyfakefs/fake_pathlib.py

@@ -94,19 +94,24 @@ class _FakeAccessor(accessor):
 
     listdir = _wrap_strfunc(FakeFilesystem.listdir)
 
-    chmod = _wrap_strfunc(FakeFilesystem.chmod)
-
     if use_scandir:
         scandir = _wrap_strfunc(fake_scandir.scandir)
 
     if hasattr(os, "lchmod"):
         lchmod = _wrap_strfunc(lambda fs, path, mode: FakeFilesystem.chmod(
             fs, path, mode, follow_symlinks=False))
+        chmod = _wrap_strfunc(FakeFilesystem.chmod)
     else:
-        def lchmod(self, pathobj, mode):
+        def lchmod(self, pathobj,  *args, **kwargs):
             """Raises not implemented for Windows systems."""
             raise NotImplementedError("lchmod() not available on this system")
 
+        def chmod(self, pathobj, *args, **kwargs):
+            if "follow_symlinks" in kwargs and not kwargs["follow_symlinks"]:
+                raise NotImplementedError(
+                    "lchmod() not available on this system")
+            return pathobj.filesystem.chmod(str(pathobj), *args, **kwargs)
+
     mkdir = _wrap_strfunc(FakeFilesystem.makedir)
 
     unlink = _wrap_strfunc(FakeFilesystem.remove)
@@ -135,7 +140,8 @@ def lchmod(self, pathobj, mode):
             FakeFilesystem.link(fs, file_path, link_target))
 
         # this will use the fake filesystem because os is patched
-        getcwd = lambda p: os.getcwd()
+        def getcwd(self):
+            return os.getcwd()
 
     readlink = _wrap_strfunc(FakeFilesystem.readlink)
 

pyfakefs/tests/fake_pathlib_test.py

@@ -380,9 +380,12 @@ def test_chmod(self):
 
     def test_lchmod(self):
         self.skip_if_symlink_not_supported()
+        if (sys.version_info >= (3, 10) and self.use_real_fs() and
+                'chmod' not in os.supports_follow_symlinks):
+            raise unittest.SkipTest('follow_symlinks not available for chmod')
         file_stat = self.os.stat(self.file_path)
         link_stat = self.os.lstat(self.file_link_path)
-        if not hasattr(os, "lchmod") and sys.version_info < (3, 10):
+        if not hasattr(os, "lchmod"):
             with self.assertRaises(NotImplementedError):
                 self.path(self.file_link_path).lchmod(0o444)
         else: