code: def test_run(self):
      padder = PaddleNumberPadder(ele_dtype=int, dtype=int, pad_val=-1)
      a = [1, 2, 3]
      t_a = padder(a)
      assert isinstance(t_a, paddle.Tensor)
      assert (t_a == paddle.to_tensor(a, dtype="int64")).sum() == 3
  
file_path: fastNLP/tests/core/collators/padders/test_paddle_padder.py
imports: import numpy
  import pytest
  from fastNLP.core.collators.padders.paddle_padder import PaddleTensorPadder, PaddleSequencePadder, PaddleNumberPadder
  from fastNLP.core.collators.padders.exceptions import DtypeError
  from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
label_desc: Use image node_id 1 for calling the TestPaddleNumberPadder obj's underlying member method code with example usage: obj.test_run() without return types