Fix regression in windows file creation/modification times (#5752)

* Reproduce issue #5693

* Fix regression in windows file creation/modification times

* Add newsfragement

newsfragments/5693.bugfix.rst

@@ -0,0 +1 @@
+Fix file creation/modification times as shown in the file explorer on Windows

parsec/core/mountpoint/winfsp_operations.py

@@ -3,7 +3,7 @@
 
 import json
 from contextlib import contextmanager
-from datetime import datetime
+from datetime import datetime, timezone
 from functools import partial, wraps
 from pathlib import PurePath
 from typing import Any, Callable, Iterator, List, Tuple, TypeVar, Union, cast
@@ -220,8 +220,8 @@ def stat_to_file_attributes(stat: dict[str, str]) -> FILE_ATTRIBUTE:
 
 
 def stat_to_winfsp_attributes(stat: dict[str, Any]) -> dict[str, Any]:
-    created = dt_to_filetime(datetime.fromtimestamp(stat["created"].timestamp()))
-    updated = dt_to_filetime(datetime.fromtimestamp(stat["updated"].timestamp()))
+    created = dt_to_filetime(datetime.fromtimestamp(stat["created"].timestamp(), tz=timezone.utc))
+    updated = dt_to_filetime(datetime.fromtimestamp(stat["updated"].timestamp(), tz=timezone.utc))
     attributes = {
         "creation_time": created,
         "last_access_time": updated,

tests/core/mountpoint/test_base.py

@@ -13,7 +13,7 @@
 from parsec._parsec import CoreEvent, DateTime
 from parsec.api.data import EntryID, EntryName
 from parsec.core import logged_core_factory
-from parsec.core.fs import FsPath
+from parsec.core.fs import FsPath, UserFS
 from parsec.core.mountpoint import (
     MountpointAlreadyMounted,
     MountpointConfigurationError,
@@ -816,3 +816,48 @@ def check_mountpoint_paths(standard_mountpoint_path, personal_mountpoint_path):
             await mountpoint_manager.mount_workspace(wid_standard),
             await mountpoint_manager.mount_workspace(wid_personal),
         )
+
+
+@pytest.mark.trio
+@pytest.mark.mountpoint
+async def test_file_creation_and_modification_time(
+    base_mountpoint,
+    alice_user_fs: UserFS,
+    event_bus,
+    running_backend,
+):
+    # Populate a bit the fs first...
+
+    wid = await alice_user_fs.workspace_create(EntryName("w"))
+    workspace = alice_user_fs.get_workspace(wid)
+
+    before_creation = alice_user_fs.device.time_provider.now().timestamp()
+    await workspace.write_bytes("/foo.txt", b"Hello world !")
+    after_creation = alice_user_fs.device.time_provider.now().timestamp()
+
+    # Now we can start fuse
+
+    async with mountpoint_manager_factory(
+        alice_user_fs, event_bus, base_mountpoint
+    ) as mountpoint_manager:
+        path = trio.Path(await mountpoint_manager.mount_workspace(wid)) / "foo.txt"
+        stat = await path.stat()
+
+        assert before_creation <= stat.st_ctime <= stat.st_mtime <= stat.st_atime <= after_creation
+
+        before_modification = alice_user_fs.device.time_provider.now().timestamp()
+        assert await path.read_text() == "Hello world !"
+        await path.write_text("New content")
+        assert await path.read_text() == "New content"
+        after_modification = alice_user_fs.device.time_provider.now().timestamp()
+
+        stat = await path.stat()
+        assert (
+            before_creation
+            <= stat.st_ctime
+            <= after_creation
+            <= before_modification
+            <= stat.st_mtime
+            <= stat.st_atime
+            <= after_modification
+        )