message: Add test cases for int64 support of unravel_index
diff: @@ -1118,16 +1118,21 @@ class UnravelIndexTest(test_util.TensorFlowTestCase):
  def testUnravelIndex(self):
  with self.test_session():
  - out_1 = array_ops.unravel_index(1621, [6, 7, 8, 9])
  + for dtype in [dtypes.int32, dtypes.int64]:
  + indices_1 = constant_op.constant(1621, dtype=dtype)
  + dims_1 = constant_op.constant([6, 7, 8, 9], dtype=dtype)
  + out_1 = array_ops.unravel_index(indices_1, dims_1)
  self.assertAllEqual(out_1.eval(), [3, 1, 4, 1])
  - out_2 = array_ops.unravel_index([1621], [6, 7, 8, 9])
  - self.assertAllEqual(out_2.eval(), [[3],
  - [1],
  - [4],
  - [1]])
  - out_3 = array_ops.unravel_index([22, 41, 37], [7, 6])
  - self.assertAllEqual(out_3.eval(), [[3, 6, 6],
  - [4, 5, 1]])
  +
  + indices_2 = constant_op.constant([1621], dtype=dtype)
  + dims_2 = constant_op.constant([6, 7, 8, 9], dtype=dtype)
  + out_2 = array_ops.unravel_index(indices_2, dims_2)
  + self.assertAllEqual(out_2.eval(), [[3], [1], [4], [1]])
  +
  + indices_3 = constant_op.constant([22, 41, 37], dtype=dtype)
  + dims_3 = constant_op.constant([7, 6], dtype=dtype)
  + out_3 = array_ops.unravel_index(indices_3, dims_3)
  + self.assertAllEqual(out_3.eval(), [[3, 6, 6], [4, 5, 1]])
  class GuaranteeConstOpTest(test_util.TensorFlowTestCase):
  