code: def test_complex_step(self):
      # Regression test for #12262
      g = r_[0:36:100j]
      assert_(g.shape == (100,))
  
      # Related to #16466
      g = r_[0 : 36 : np.complex64(100j)]
      assert_(g.shape == (100,))
  
imports: import functools
  from unittest import expectedFailure, skipIf
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 4 for calling the TestConcatenator obj's underlying member method code with example usage: obj.test_complex_step() without return types