code: def test_log(self):
      with numpy.errstate(divide="ignore"):
          self.check_unary("log")
  
file_path: cupy/tests/cupy_tests/math_tests/test_explog.py
imports: import numpy
  import pytest
  from cupy import testing
label_desc: Use image node_id 6 for calling the TestExplog obj's underlying member method code with example usage: obj.test_log() without return types