code: def test_rename_schema_order_6660() -> None:
      df = pl.DataFrame(
          {
              "a": [],
              "b": [],
              "c": [],
              "d": [],
          }
      )
  
      mapper = {"a": "1", "b": "2", "c": "3", "d": "4"}
  
      renamed = df.lazy().rename(mapper)
  
      computed = renamed.select(
          [pl.all(), pl.col("4").alias("computed")]
      )
  
      assert renamed.schema == renamed.collect().schema
      assert computed.schema == computed.collect().schema
  
imports: from __future__ import annotations
  from collections import OrderedDict
  from datetime import date, timedelta
  from typing import Any, Iterator, Mapping
  import pytest
  import polars
  from polars.testing import assert_frame_equal, assert_series_equal
label_desc: Use image node_id 26 for calling a global function with example usage: test_rename_schema_order_6660() without return types