code: def test_he_initializer_repr(self):
      he_initializer = init.HeNormal()
      self.assertEqual("HeNormal(gain=1.0)", str(he_initializer))
  
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 3 for calling the HeInitializeTestCase obj's underlying member method code with example usage: obj.test_he_initializer_repr() without return types