code: def test_empty_array_ravel(self, mode):
      res = np.ravel_multi_index(
          np.zeros((3, 0), dtype=np.intp), (2, 1, 0), mode=mode
      )
      assert res.shape == (0,)
  
      with assert_raises(ValueError):
          np.ravel_multi_index(
              np.zeros((3, 1), dtype=np.intp), (2, 1, 0), mode=mode
          )
  
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 8 for calling the TestRavelUnravelIndex obj's underlying member method code with example usage: obj.test_empty_array_ravel(mode) without return types