more tests

tests/app/test_history_meta.py

@@ -1,6 +1,9 @@
 from unittest.mock import MagicMock
 
-from app.history_meta import _get_bases_for_versioned_class
+from app.history_meta import (
+    _get_bases_for_versioned_class,
+    _handle_single_table_inheritance,
+)
 
 
 def test_get_bases_with_super_history_and_table():
@@ -55,3 +58,27 @@ def test_get_bases_without_super_history():
 
     assert bases == (Base,)
     assert "changed" not in properties
+
+
+def _col_copy(col):
+    return f"copied_{col.key}"
+
+
+def test_handle_single_table_inheritance():
+    col1 = MagicMock()
+    col1.key = "id"
+    col2 = MagicMock()
+    col2.key = "new_column"
+
+    local_mapper = MagicMock()
+    local_mapper.local_table.c = [col1, col2]
+
+    super_history_mapper = MagicMock()
+    super_history_mapper.local_table.c = {"id": col1}
+    super_history_mapper.local_table.append_column = MagicMock()
+
+    _handle_single_table_inheritance(local_mapper, super_history_mapper)
+
+    super_history_mapper.local_table.append_column.assert_called_once_with(
+        "copied_new_column"
+    )