code: def test_identify_fans_conv(self):
      self.assertEqual((9, 90), identify_fans((3, 3, 1, 10)))
      self.assertEqual((250, 150), identify_fans((5, 5, 10, 6)))
  
imports: import math
  from scipy import stats
  import numpy
  from neupy import init
  from neupy.init import identify_fans
  from base import BaseTestCase
label_desc: Use image node_id 4 for calling the FanIdentifierTestCase obj's underlying member method code with example usage: obj.test_identify_fans_conv() without return types