code: def test_literal_subtract_schema_13284() -> None:
      assert (
          pl.LazyFrame({"a": [23, 30]}, schema={"a": pl.UInt8})
          .with_columns(pl.col("a") - pl.lit(1))
          .group_by(by="a")
          .count()
      ).schema == OrderedDict([("a", pl.UInt8), ("count", pl.UInt32)])
  
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 39 for calling a global function with example usage: test_literal_subtract_schema_13284() without return types