code: def test_0d(self):
      # gh-580
      x = np.unravel_index(0, ())
      assert_equal(x, ())
  
      assert_raises_regex(
          ValueError, "0d array", np.unravel_index, [0], ()
      )
      assert_raises_regex(
          ValueError, "out of bounds", np.unravel_index, [1], ()
      )
  
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 7 for calling the TestRavelUnravelIndex obj's underlying member method code with example usage: obj.test_0d() without return types