fix(time-entries): preserve deleted tags in timesheet edits

apps/time_entries/tests/test_services.py

@@ -4,7 +4,9 @@ import pytest
 from django.utils import timezone
 from rest_framework.exceptions import ValidationError
 
-from apps.time_entries.services.time_entries import create_time_entry, stop_time_entry
+from apps.projects.models import Project
+from apps.tags.models import Tag
+from apps.time_entries.services.time_entries import create_time_entry, stop_time_entry, update_time_entry
 from apps.users.models import User
 from apps.workspaces.models import Workspace
 
@@ -45,3 +47,32 @@ def test_stop_time_entry_sets_end_time_and_duration(workspace_owner):
 
     assert stopped_entry.end_time is not None
     assert stopped_entry.duration is not None
+
+
+def test_update_time_entry_preserves_deleted_project_and_tags(workspace_owner):
+    user, workspace = workspace_owner
+    project = Project.objects.create(workspace=workspace, name="Deleted project")
+    tag = Tag.objects.create(workspace=workspace, name="Deleted tag", color="#0f172a")
+    entry = create_time_entry(
+        user=user,
+        workspace_id=workspace.id,
+        start_time=timezone.now() - timedelta(hours=1),
+        end_time=timezone.now(),
+        project=project,
+        tags=[tag],
+        description="Before delete",
+    )
+
+    project.delete()
+    tag.delete()
+
+    updated_entry = update_time_entry(
+        entry,
+        project=Project.all_objects.get(id=project.id),
+        tags=[Tag.all_objects.get(id=tag.id)],
+        description="After delete",
+    )
+
+    assert updated_entry.description == "After delete"
+    assert updated_entry.project_id == project.id
+    assert list(Tag.all_objects.filter(time_entries=updated_entry).values_list("id", flat=True)) == [tag.id]