[英]Why is this code raising an AssertionError?
這是代碼。
# mean_var_std.py
def calculate(list):
try:
if len(list) < 9:
raise ValueError
else:
return 0
except ValueError:
print("List must contain nine numbers.")
這就是考驗。
import unittest
import mean_var_std
# the test case
class UnitTests(unittest.TestCase):
def test_calculate_with_few_digits(self):
self.assertRaisesRegex(ValueError, "List must contain nine numbers.", mean_var_std.calculate, [2,6,2,8,4,0,1,])
if __name__ == "__main__":
unittest.main()
當我運行它時,我得到以下 output:
F
======================================================================
FAIL: test_calculate_with_few_digits (test_module.UnitTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/runner/fcc-mean-var-std-2/test_module.py", line 8, in test_calculate_with_few_digits
self.assertRaisesRegex(ValueError, "List must contain nine numbers.", mean_var_std.calculate, [2,6,2,8,4,0,1,])
AssertionError: ValueError not raised by calculate
----------------------------------------------------------------------
Ran 1 test in 0.001s
FAILED (failures=1)
output 表示代碼沒有引發 ValueError,但從代碼中我們可以清楚地看到代碼引發了 ValueError。 為什么我的代碼仍然無法通過單元測試?
這是因為您在測試接收到 ValueError 之前捕獲了它。 刪除 try catch 它應該可以工作
# mean_var_std.py
def calculate(list):
if len(list) < 9:
print("List must contain nine numbers.")
raise ValueError
else:
return 0
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.