斷言錯誤Python中的()是單元測試庫函數,用於單元測試中以比較測試值與false。此函數將使用兩個參數作為輸入,並根據斷言條件返回布爾值。如果測試值為假,則斷言錯誤()將返回true,否則返回false。
用法: assertFalse(testValue, message)
參數:斷言錯誤()接受以下說明的兩個參數:
- testValue:布爾類型的變量,用於按函數比較
- message:作為測試消息失敗時顯示的消息的字符串語句。
下麵列出了兩個不同的示例,它們說明了給定assert函數的正麵和負麵測試案例:
示例1:否定測試用例
Python3
# unit test case
import unittest
class TestStringMethods(unittest.TestCase):
# test function
def test_negative(self):
testValue = True
# error message in case if test case got failed
message = "Test value is not false."
# assetFalse() to check test value as false
self.assertFalse( testValue, message)
if __name__ == '__main__':
unittest.main()
輸出:
F ====================================================================== FAIL:test_negative (__main__.TestStringMethods) ---------------------------------------------------------------------- Traceback (most recent call last): File "p1.py", line 11, in test_negative self.assertFalse( testValue, message) AssertionError:True is not false:Test value is not false. ---------------------------------------------------------------------- Ran 1 test in 0.000s FAILED (failures=1)
示例2:正測試用例
Python3
# unit test case
import unittest
class TestStringMethods(unittest.TestCase):
# test function
def test_positive(self):
testValue = False
# error message in case if test case got failed
message = "Test value is not false."
# assertFalse() to check test value as false
self.assertFalse( testValue, message)
if __name__ == '__main__':
unittest.main()
輸出:
. ---------------------------------------------------------------------- Ran 1 test in 0.000s OK
參考:https://docs.python.org/3/library/unittest.html
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注:本文由純淨天空篩選整理自Shivam.Pradhan大神的英文原創作品 Python unittest – assertFalse() function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。