code: def test_tanh(self):
      self.check_unary("tanh")
  
file_path: cupy/tests/cupy_tests/math_tests/test_hyperbolic.py
imports: import unittest
  from cupy import testing
label_desc: Use image node_id 5 for calling the TestHyperbolic obj's underlying member method code with example usage: obj.test_tanh() without return types