Update clean_up to drop change_log table

Author: marcelofern

src/psycopack/_repack.py

@@ -632,6 +632,13 @@ def clean_up(self) -> None:
                 self.command.drop_table_if_exists(table=self.backfill_log)
                 self.registry.delete_row_for(table=self.table)
 
+                if self.sync_strategy == _sync_strategy.SyncStrategy.CHANGE_LOG:
+                    # The change log trigger and function have already been
+                    # dropped during the schema sync stage. The table is the
+                    # only artefact remaining.
+                    assert self.change_log is not None
+                    self.command.drop_table_if_exists(table=self.change_log)
+
     def reset(self) -> None:
         current_stage = self.tracker.get_current_stage()
         if current_stage == _tracker.Stage.PRE_VALIDATION:

tests/test_repack.py

@@ -2543,7 +2543,16 @@ def test_repack_with_changes_log_strategy(
 
         table_before = _collect_table_info(table="to_repack", connection=connection)
         repack.swap()
+
+        # Before the clean-up, the change_log table is still there.
+        assert repack.change_log is not None
+        repack.introspector.get_table_oid(table=repack.change_log)
+
         repack.clean_up()
+
+        # After the clean-up, the change_log table has been deleted.
+        repack.introspector.get_table_oid(table=repack.change_log)
+
         table_after = _collect_table_info(table="to_repack", connection=connection)
         _assert_repack(
             table_before=table_before,