这是我尝试学习单元测试的代码。为测试目的创建一个学生类。测试无效的测试用例不断失败。
FAIL: test_invalid (__main__.TestStudent)
----------------------------------------------------------------------
Traceback (most recent call last):
File "mystudent.py", line 46, in test_invalid
s1.get_grade()
AssertionError: ValueError not raised
以上来自运行结果。
谁能帮我弄清楚为什么我会失败,而我认为我在那里放了正确的“引发错误”代码....
import unittest
class Student(object):
def __init__(self, name, score):
self.name = name
self.score = score
def get_grade(self):
try:
if self.score >= 60 and self.score < 80:
return 'B'
if self.score >= 80 and self.score <= 100:
return 'A'
if self.score >= 0 and self.score <60:
return 'C'
if self.score < 0 or self.score > 100:
raise ValueError('Invalid score value')
except Exception as e:
print('Value error!')
class TestStudent(unittest.TestCase):
def test_invalid(self):
s1 = Student('Bob', -1)
s2 = Student('Bat', 101)
with self.assertRaises(ValueError):
s1.get_grade()
with self.assertRaises(ValueError):
s2.get_grade()
if __name__ == '__main__':
unittest.main()
谢谢