Add patching getcwd/getcwdb for nt

- fixes Windows problem if called from fspath, if
  the real current drive is not C:
- fixes test for #892 under Windows

Author: mrbean-bremen

CHANGES.md

@@ -11,14 +11,15 @@ The released versions correspond to PyPI releases.
 * make sure tests work without HOME environment set (see [#870](../../issues/870))
 * automount drive or UNC path under Windows if needed for `pathlib.Path.mkdir()`
   (see [#890](../../issues/890))
-* adapt patching `io.open` to work with Python 3.12 (see [#836](../../issues/836))
+* adapt patching `io.open` and `io.open_code` to work with Python 3.12
+  (see [#836](../../issues/836) and [#892](../../issues/892))
 
 ## [Version 5.2.3](https://pypi.python.org/pypi/pyfakefs/5.2.3) (2023-08-18)
 Fixes a rare problem on pytest shutdown.
 
 ### Fixes
 * Clear the patched module cache on session shutdown (pytest only)
-  (see [#866](../../issues/866)). Added a class method `Patcher.cler_fs_cache`
+  (see [#866](../../issues/866)). Added a class method `Patcher.clear_fs_cache`
   for clearing the patched module cache.
 
 ## [Version 5.2.3](https://pypi.python.org/pypi/pyfakefs/5.2.3) (2023-07-10)

pyfakefs/fake_path.py

@@ -39,6 +39,7 @@
     make_string_path,
     to_string,
     matching_string,
+    to_bytes,
 )
 
 if TYPE_CHECKING:
@@ -507,6 +508,14 @@ def __init__(self, filesystem: "FakeFilesystem"):
             self.filesystem = filesystem
             self.nt_module: Any = nt
 
+        def getcwd(self) -> str:
+            """Return current working directory."""
+            return to_string(self.filesystem.cwd)
+
+        def getcwdb(self) -> bytes:
+            """Return current working directory as bytes."""
+            return to_bytes(self.filesystem.cwd)
+
         if sys.version_info >= (3, 12):
 
             def _path_isdir(self, path: AnyStr) -> bool:

pyfakefs/tests/fake_filesystem_unittest_test.py

@@ -805,7 +805,6 @@ def import_foo(self):
         mod = importlib.util.module_from_spec(spec)
         spec.loader.exec_module(mod)
 
-    @unittest.skipIf(sys.platform == "win32", "Not yet working under Windows")
     def test_exec_module_in_fake_fs(self):
         self.fs.create_file("/foo/bar.py", contents="print('hello')")
         with redirect_stdout(StringIO()) as stdout: