code: def test_value_counts(self):
      df = pd.DataFrame(
          {
              "Height": [
                  150,
                  150,
                  151,
                  151,
                  152,
                  155,
                  155,
                  157,
                  157,
                  157,
                  157,
                  158,
                  158,
                  159,
                  159,
                  159,
                  160,
                  160,
                  162,
                  162,
                  163,
                  164,
                  165,
                  168,
                  169,
                  169,
                  169,
                  170,
                  171,
                  171,
                  173,
                  173,
                  174,
                  176,
                  177,
                  177,
                  179,
                  179,
                  179,
                  179,
                  179,
                  181,
                  181,
                  182,
                  183,
                  184,
                  186,
                  190,
                  190,
              ],
              "Weight": [
                  54,
                  55,
                  55,
                  47,
                  58,
                  53,
                  59,
                  60,
                  56,
                  55,
                  62,
                  56,
                  55,
                  55,
                  64,
                  61,
                  59,
                  59,
                  63,
                  66,
                  64,
                  62,
                  66,
                  66,
                  72,
                  65,
                  75,
                  71,
                  70,
                  70,
                  75,
                  65,
                  79,
                  78,
                  83,
                  75,
                  84,
                  78,
                  74,
                  75,
                  74,
                  90,
                  80,
                  81,
                  90,
                  81,
                  91,
                  87,
                  100,
              ],
              "Size": [
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "XL",
                  "XL",
                  "XL",
                  "XL",
                  "XL",
                  "XL",
                  "XL",
                  "XL",
              ],
              "SizePred": [
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "S",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "M",
                  "L",
                  "M",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "L",
                  "XL",
                  "L",
                  "L",
                  "XL",
                  "L",
                  "XL",
                  "XL",
                  "XL",
              ],
          }
      )
      cm = ConfusionMatrix(df["Size"], df["SizePred"])
      assert isinstance(
          cm, pdml.confusion_matrix.LabeledConfusionMatrix
      )
  
      assert (cm.true - df.Size.value_counts()).sum() == 0
      assert (cm.pred - df.SizePred.value_counts()).sum() == 0
      cm.print_stats()
  
imports: import pytest
  import matplotlib
  import numpy
  import pandas
  import pandas_ml.util.testing
  import pandas_ml
  from pandas_ml import ConfusionMatrix
  from collections import OrderedDict
label_desc: Use image node_id 7 for calling the TestConfusionMatrix obj's underlying member method code with example usage: obj.test_value_counts() without return types