code: def testPaddingsNonNegative(self):
      with test_util.use_gpu():
          with self.assertRaisesRegex(
              (ValueError, errors.InvalidArgumentError),
              "must be non-negative",
          ):
              array_ops.pad(
                  constant_op.constant([1], shape=[1]),
                  constant_op.constant([-1, 0], shape=[1, 2]),
              )
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gradient_checker_v2
  from tensorflow.python.platform import test
label_desc: Use image node_id 12 for calling the PadOpTest obj's underlying member method code with example usage: obj.testPaddingsNonNegative() without return types