code: def test_exp(self):
      assert_allclose(
          np.exp(0.5), exp(0.5), atol=1e-14, check_dtype=False
      )
  
imports: import numpy
  from torch._numpy._ufuncs import *
  from torch._numpy.testing import assert_allclose
  from torch.testing._internal.common_utils import run_tests, TestCase
label_desc: Use image node_id 15 for calling the TestUnaryUfuncs obj's underlying member method code with example usage: obj.test_exp() without return types