Add test for renamed folder - NIX

Summary:
# Context

We are introducing EdenFS notifications to support scalable and ergonomic file system notifications for EdenFS mounts.

# This Diff
This diff adds tests for folder renaming

# Technical Details
New files:
Update thrift_objects.py to have a LargeChange generator

# Discussion Points

Reviewed By: lXXXw

Differential Revision: D66989434

fbshipit-source-id: a75d90d654fd63b88d3ea8d3ee631ea3bfd9f7f0

eden/integration/changes_test.py

@@ -8,11 +8,16 @@
 
 import sys
 
-from facebook.eden.ttypes import Dtype, LostChangesReason, SmallChangeNotification
+from facebook.eden.ttypes import (
+    Dtype,
+    LargeChangeNotification,
+    LostChangesReason,
+    SmallChangeNotification,
+)
 
 from .lib import testcase
 from .lib.journal_test_base import JournalTestBase, WindowsJournalTestBase
-from .lib.thrift_objects import buildSmallChange, getLargeChangeSafe
+from .lib.thrift_objects import buildLargeChange, buildSmallChange, getLargeChangeSafe
 
 
 if sys.platform == "win32":
@@ -234,6 +239,20 @@ def test_modify_folder_chown(self):
         ]
         self.assertTrue(self.check_changes(changes.changes, expected_changes))
 
+    def test_rename_folder(self):
+        self.mkdir("test_folder")
+        position = self.client.getCurrentJournalPosition(self.mount_path_bytes)
+        self.rename("test_folder", "best_folder")
+        changes = self.getChangesSinceV2(position=position)
+        expected_changes = [
+            buildLargeChange(
+                LargeChangeNotification.DIRECTORYRENAMED,
+                from_bytes=b"test_folder",
+                to_bytes=b"best_folder",
+            ),
+        ]
+        self.assertTrue(self.check_changes(changes.changes, expected_changes))
+
 
 @testcase.eden_repo_test
 class ChangesTestWin(WindowsJournalTestBase):

eden/integration/lib/thrift_objects.py

@@ -11,8 +11,12 @@
 from facebook.eden.ttypes import (
     Added,
     ChangeNotification,
+    CommitTransition,
+    DirectoryRenamed,
     Dtype,
     LargeChangeNotification,
+    LostChanges,
+    LostChangesReason,
     Modified,
     Removed,
     Renamed,
@@ -85,3 +89,34 @@ def buildSmallChange(
             SmallChangeNotification(removed=Removed(fileType=fileType, path=path))
         )
     return ChangeNotification()
+
+
+def buildLargeChange(
+    changeType: int,
+    from_bytes: Optional[bytes] = None,
+    to_bytes: Optional[bytes] = None,
+    lost_change_reason: Optional[LostChangesReason] = None,
+) -> ChangeNotification:
+    if changeType == LargeChangeNotification.DIRECTORYRENAMED:
+        return ChangeNotification(
+            largeChange=LargeChangeNotification(
+                directoryRenamed=DirectoryRenamed(
+                    from_PY_RESERVED_KEYWORD=from_bytes, to=to_bytes
+                )
+            )
+        )
+    elif changeType == LargeChangeNotification.COMMITTRANSITION:
+        return ChangeNotification(
+            largeChange=LargeChangeNotification(
+                commitTransition=CommitTransition(
+                    from_PY_RESERVED_KEYWORD=from_bytes, to=to_bytes
+                )
+            )
+        )
+    elif changeType == LargeChangeNotification.LOSTCHANGES:
+        return ChangeNotification(
+            largeChange=LargeChangeNotification(
+                lostChanges=LostChanges(reason=lost_change_reason)
+            )
+        )
+    return ChangeNotification()