def test_delete_data_to_empty_table(self):
data = create_data_container()
with self.new_table('my_data_table') as table:
uid = table.append(data)
with closing(tables.open_file(self.filename, mode='a')) as handle:
root = handle.root
table = DataContainerTable(
root, 'my_data_table', record=self.record)
del table[uid]
self.assertEqual(len(table), 0)
# The table is recreated we need to make sure that the right
# record is used.
data_column = root.my_data_table.colinstances['data']
expected_column_names = [
key.name.lower() for key in self.saved_keys]
self.assertItemsEqual(
data_column._v_colnames, expected_column_names)