old_contents: # -*- coding: utf-8 -*-
  
  
  from dp_tornado.engine.model import Model as dpModel
  
  
  class TestingModel(dpModel):
      def add(self, a, b):
          """
              .. test::
                  expect(int=10, args=(1, 9))
                  expect(
                      int=10,
                      kwargs={
                          'a': 1,
                          'b': 9
                      })
                  !expect(int=11, args=(1, 9))
                  !expect(str='10', args=(1, 9))
                  !expect(bool=False, args=(1, 9))
          """
          return a + b
  
      def minus(self, a, b):
          """
              .. test::
                  expect(int=10, args=(11, 1))
                  expect(
                      int=10,
                      kwargs={
                          'a': 11,
                          'b': 1
                      })
                  !expect(int=11, args=(11, 1))
                  !expect(str='10', args=(11, 1))
                  !expect(bool=False, args=(1, 9))
          """
          return a - b
  
new_contents: # -*- coding: utf-8 -*-
  
  
  from dp_tornado.engine.model import Model as dpModel
  
  
  class TestingModel(dpModel):
      def add(self, a, b):
          """
              .. test::
                  expect(int=10, args=(1, 9))
                  expect(
                      int=10,
                      kwargs={
                          'a': 1,
                          'b': 9
                      })
                  !expect(int=11, args=(1, 9))
                  !expect(str='10', args=(1, 9))
                  !expect(bool=False, args=(1, 9))
          """
          return a + b
  
      def minus(self, a, b):
          """
              .. test::
                  expect(int=10, args=(11, 1))
                  expect(
                      int=10,
                      kwargs={
                          'a': 11,
                          'b': 1
                      })
                  !expect(int=11, args=(11, 1))
                  !expect(str='10', args=(11, 1))
                  !expect(bool=False, args=(1, 9))
          """
          return a - b
  
      def unicode(self, a):
          """
              .. test::
                  expect(str='한글', args=('한글', ))
                  expect(
                      int='한글',
                      kwargs={
                          'a': '한글'
                      })
          """
          return a
  
subject: add unicode testing test case.