code: def test_sample_df_for_time_func():
      df = DataFrame({"a": [1, 5, 3, 8, 12]})
  
      df_out_1 = sample_df_for_time_func(
          df=df, sample_size=1, max_sample_size=10
      )
      df_out_2 = sample_df_for_time_func(
          df=df, sample_size=3, max_sample_size=10
      )
      df_out_3 = sample_df_for_time_func(
          df=df, sample_size=5, max_sample_size=10
      )
      df_out_4 = sample_df_for_time_func(
          df=df, sample_size=7, max_sample_size=10
      )
      df_out_5 = sample_df_for_time_func(
          df=df, sample_size=14, max_sample_size=10
      )
      df_out_6 = sample_df_for_time_func(
          df=df, sample_size=14, max_sample_size=None
      )
      df_out_7 = sample_df_for_time_func(
          df=df, sample_size=6, max_sample_size=4
      )
  
      assert (df.head(1) == df_out_1).all().all()
      assert (df.head(3) == df_out_2).all().all()
      assert (df == df_out_3).all().all()
      assert 7 == len(df_out_4)
      assert ["a"] == list(df_out_4.columns)
      assert 10 == len(df_out_5)
      assert ["a"] == list(df_out_5.columns)
      assert 14 == len(df_out_6)
      assert ["a"] == list(df_out_6.columns)
      assert 5 == len(df_out_7)
      assert (df == df_out_7).all().all()
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_sample_df_for_time_func() without return types