code: def test_markdown_options(fsspectest):
      pytest.importorskip("tabulate")
      df = DataFrame({"a": [0]})
      df.to_markdown(
          "testmem://mockfile", storage_options={"test": "md_write"}
      )
      assert fsspectest.test[0] == "md_write"
      assert fsspectest.cat("testmem://mockfile")
  
imports: import io
  import numpy
  import pytest
  from pandas import DataFrame, date_range, read_csv, read_excel, read_feather, read_json, read_parquet, read_pickle, read_stata, read_table
  import pandas._testing
  from pandas.util import _test_decorators
label_desc: Use image node_id 23 for calling a global function with example usage: test_markdown_options(fsspectest) without return types