feat: route bounded hierarchy postbox copies

tests/test_migration.py

@@ -14,14 +14,21 @@ class PostboxMigrationTests(unittest.TestCase):
             "govoplan_postbox.backend.migrations.versions."
             "c7d2e5f8a1b4_v010_postbox_baseline"
         )
+        route_migration = importlib.import_module(
+            "govoplan_postbox.backend.migrations.versions."
+            "e4b7c9d2a6f1_v011_hierarchy_routes"
+        )
         engine = create_engine("sqlite:///:memory:")
         try:
             with engine.begin() as connection:
                 operations = Operations(MigrationContext.configure(connection))
                 original = migration.op
+                route_original = route_migration.op
                 migration.op = operations
+                route_migration.op = operations
                 try:
                     migration.upgrade()
+                    route_migration.upgrade()
                     tables = set(inspect(connection).get_table_names())
                     self.assertIn("postboxes", tables)
                     self.assertIn("postbox_messages", tables)
@@ -43,6 +50,18 @@ class PostboxMigrationTests(unittest.TestCase):
                             "withdrawn_at",
                         }.issubset(message_columns)
                     )
+                    route_columns = {
+                        column["name"]
+                        for column in inspect(connection).get_columns(
+                            "postbox_routes"
+                        )
+                    }
+                    self.assertTrue(
+                        {"execute_after", "processed_at"}.issubset(
+                            route_columns
+                        )
+                    )
+                    route_migration.downgrade()
                     migration.downgrade()
                     self.assertFalse(
                         {
@@ -53,6 +72,7 @@ class PostboxMigrationTests(unittest.TestCase):
                     )
                 finally:
                     migration.op = original
+                    route_migration.op = route_original
         finally:
             engine.dispose()