code: def test_run(self):
      padder = PaddleSequencePadder(
          ele_dtype=int, dtype=int, pad_val=-1
      )
      a = [[1, 2, 3], [3]]
      a = padder(a)
      shape = a.shape
      assert isinstance(a, paddle.Tensor)
      assert tuple(shape) == (2, 3)
      b = paddle.to_tensor([[1, 2, 3], [3, -1, -1]], dtype="int64")
      assert (a == b).sum().item() == shape[0] * shape[1]
  
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 TestPaddleSequencePadder obj's underlying member method code with example usage: obj.test_run() without return types