message: In framework/ops_test.py, be explicit when we want int64.
  On windows, the default for numpy is not int64, so this test fails without explicit dtype.
diff: @@ -695,7 +695,8 @@ class OperationTest(test_util.TensorFlowTestCase):
  def testConvertToLongLongTensorType(self):
  tensor = ops.convert_to_tensor(
  # Get a numpy array of dtype NPY_LONGLONG
  - np.prod(constant_op.constant([1])._shape_tuple()))
  + np.prod(constant_op.constant([1])._shape_tuple()),
  + dtype=dtypes.int64)
  self.assertEqual(dtypes.int64, tensor.dtype)
  @test_util.run_in_graph_and_eager_modes
  