def testMakeAttrShape(self):
   for s in ([], None, [1, 2, 3], [None, None], [1, None, 3]):
     expected = tensor_shape.TensorShape(s).as_proto()
     actual = backprop.make_attr(pywrap_tensorflow.TF_ATTR_SHAPE, s)
     self.assertEqual(
         expected,
         actual,
         msg=('For shape %r, expected %r != %r actual' % (s, expected,
                                                          actual)))

 def testMakeAttrShapeList(self):
   shape_list = [[], None, [1, 2, 3], [None, None], [1, None, 3]]
   self.assertEqual(
       [tensor_shape.TensorShape(s).as_proto() for s in shape_list],
       backprop.make_attr([pywrap_tensorflow.TF_ATTR_SHAPE], shape_list))

 def testMakeAttrTypeList(self):
   self.assertEqual([dtypes.float32],
                    backprop.make_attr([pywrap_tensorflow.TF_ATTR_TYPE], [1]))

 def testMakeAttrType(self):
   self.assertEqual(dtypes.float32,
                    backprop.make_attr(pywrap_tensorflow.TF_ATTR_TYPE, 1))