code: def test_limits(self, x, expected):
      y = sc._ufuncs._scaled_exp1(x)
      assert y == expected
  
file_path: scipy/scipy/special/tests/test_exponential_integrals.py
imports: import pytest
  import numpy
  from numpy.testing import assert_allclose
  import scipy.special
label_desc: Use image node_id 1 for calling the TestScaledExp1 obj's underlying member method code with example usage: obj.test_limits(x, expected) without return types