Question

我今天开始进行单元测试，遇到一个问题，我觉得这很明显，但是也许你们会看到的。该块是保存信息的文件

names.py

class Person:
  def __init__(self, firstname, lastname, middlename = ""):
    self.firstname = firstname
    self.lastname = lastname
    self.middlename = middlename
  def fullname(self):
      if self.middlename:
          return self.firstname + " " + self.middlename + " " + self.lastname

      else:
          return  self.firstname + " " + self.lastname

这是测试应用

import unittest
from names import Person




class TestName(unittest.TestCase):

    def test_fullname(self):

        rashka = Person("John","Smith","James")

        self.assertEqual(rashka.fullname, "John James Smith")

if __name__ == "__main__":
      unittest.main()

运行该错误消息

    AssertionError: <bound method Person.fullname 
    of <names.Person object at 0x0371A690>> != 'John James Smith'

Answer 1

您需要调用rashka.fullname()，否则您正在将方法与str进行比较。

Answer 2

正如其他答案所建议的，plainSum(1) _是实例上的一种方法，因此需要像其他任何函数一样调用：

fullname

或者，您也可以考虑使用>>> rashka.fullname <bound method Person.fullname of <names.Person object at 0x0371A690>> >>> rashka.fullname() 'John James Smith'装饰器来获取属性访问权限：

property

现在，class Person: def __init__(self, firstname, lastname, middlename = ""): self.firstname = firstname self.lastname = lastname self.middlename = middlename @property # <-- new def fullname(self): if self.middlename: return self.firstname + " " + self.middlename + " " + self.lastname else: return self.firstname + " " + self.lastname将返回您在测试中编写的名称（不需要括号）。

rashka.fullname

Python单元测试AssertionError <names.person object =“” at =“” 0x0293a6b0 =“” >>！=

2 个答案: