code: def test_run(self):
      padder = RawNumberPadder(pad_val=-1, ele_dtype=int, dtype=int)
      a = [1, 2, 3]
      assert padder(a) == a
  
file_path: fastNLP/tests/core/collators/padders/test_raw_padder.py
imports: import numpy
  import pytest
  from fastNLP.core.collators.padders.raw_padder import RawNumberPadder, RawSequencePadder
  from fastNLP.core.collators.padders.exceptions import DtypeError
label_desc: Use image node_id 1 for calling the TestRawNumberPadder obj's underlying member method code with example usage: obj.test_run() without return types