code: def test_crete_number(self):
      for i in range(10):
          self.assertTrue(len(swap_ins.create_num(i)) == 1)
      self.assertTrue(3 == len(swap_ins.create_num(10)))
      self.assertTrue(5 == len(swap_ins.create_num(11)))
      self.assertTrue(7 == len(swap_ins.create_num(12)))
  
file_path: textflint/test/generation/transformation/CWS/test_cn_swap_num.py
imports: import unittest
  from textflint.generation.transformation.CWS.cn_swap_num import CnSwapNum
  from textflint.input.component.sample.cws_sample import CWSSample
label_desc: Use image node_id 1 for calling the TestCnSwapNum obj's underlying member method code with example usage: obj.test_crete_number() without return types