old_contents: import unittest
  import paddle.v2.fluid.framework as framework
  
  
  class ConditionalBlock(unittest.TestCase):
      def test_const_value(self):
          self.assertEqual(framework.GRAD_VAR_SUFFIX, "@GRAD")
  
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: import unittest
  import paddle.v2.fluid.framework as framework
  
  
  class ConditionalBlock(unittest.TestCase):
      def test_const_value(self):
          self.assertEqual(framework.GRAD_VAR_SUFFIX, "@GRAD")
          self.assertEqual(framework.TEMP_VAR_NAME, "@TEMP@")
          self.assertEqual(framework.GRAD_VAR_SUFFIX, "@GRAD")
          self.assertEqual(framework.ZERO_VAR_SUFFIX, "@ZERO")
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: complete const test