code: def test_special_cases():
      assert_equal(sc.owens_t(5, 0), 0)
      assert_allclose(
          sc.owens_t(0, 5), 0.5 * np.arctan(5) / np.pi, rtol=5e-14
      )
      # Target value is 0.5*Phi(5)*(1 - Phi(5)) for Phi the CDF of the
      # standard normal distribution
      assert_allclose(
          sc.owens_t(5, 1), 1.4332574485503512543e-07, rtol=5e-14
      )
  
imports: import numpy
  from numpy.testing import assert_equal, assert_allclose
  import scipy.special
label_desc: Use image node_id 2 for calling a global function with example usage: test_special_cases() without return types