code: def test_dataset_schema_empty():
      file_name = cache_file(
          "auto2.dta", "http://www.stata-press.com/data/r15/auto2.dta"
      )
      df = pd.read_stata(file_name)
  
      # Length left out due to correlation with weight.
      report = df.profile_report(
          title="Dataset schema empty",
          minimal=True,
          dataset=None,
      )
  
      html = report.to_html()
  
      assert "<p class=h4>Dataset</p>" not in html
      assert "<div class=col-sm-12><p class=h4>Reproduction</p>" in html
  
imports: import pandas
  from ydata_profiling.utils.cache import cache_file
label_desc: Use image node_id 2 for calling a global function with example usage: test_dataset_schema_empty() without return types