code: def heatmap_input_argument_tests():
      options = {}
  
      def heatmap_test(self, **kwargs):
          self._iplot(self.df, kind="heatmap", **kwargs)
          df = cf.datagen.heatmap()
          df.index = cf.pd.period_range("1/1/2016", periods=5)
          self._iplot(df, kind="heatmap", **kwargs)
          # df.iplot(kind='heatmap')
  
      _generate_tests(TestIPlot, heatmap_test, "heatmap", options)
  
imports: import cufflinks
  import pandas
  import numpy
  import unittest
  from nose.tools import assert_equals
label_desc: Use image node_id 5 for calling a global function with example usage: heatmap_input_argument_tests() without return types