code: def test_regression_1(self):
      # Test empty untyped inputs create outputs of indexing type, gh-5804
      (a,) = ix_(range(0))
      assert_equal(a.dtype, np.intp)
  
      (a,) = ix_([])
      assert_equal(a.dtype, np.intp)
  
      # but if the type is specified, don't change it
      (a,) = ix_(np.array([], dtype=np.float32))
      assert_equal(a.dtype, np.float32)
  
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 1 for calling the TestIx_ obj's underlying member method code with example usage: obj.test_regression_1() without return types