code: def test_ediff1d_scalar_handling(
      self, ary, prepend, append, expected
  ):
      # maintain backwards-compatibility
      # of scalar prepend / append behavior
      # in ediff1d following fix for gh-11490
      actual = np.ediff1d(ary=ary, to_end=append, to_begin=prepend)
      assert_equal(actual, expected)
      assert actual.dtype == expected.dtype
  
imports: from unittest import skipIf
  import numpy
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, subtest, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 7 for calling the TestSetOps obj's underlying member method code with example usage: obj.test_ediff1d_scalar_handling(ary, prepend, append, expected) without return types