Python - 单元测试中的 assertGreaterEqual()函数

Python中的assertGreaterEqual()是一个unittest库函数，用于单元测试以检查第一个给定值是否大于或等于第二个值。该函数将采用三个参数作为输入，并根据断言条件返回一个布尔值。

该函数检查第一个给定值是否大于或等于第二个值，如果是，则返回 true，如果第一个值不大于或等于第二个值，则返回 false。

Syntax: assertGreaterEqual(first, second, message=None)

Parameters: assertGreaterEqual() accept three parameters which are listed below with explanation:

• first: first input value (integer)
• second:  second input value (integer)
• message: a string sentence as a message which got displayed when the test case got failed.

下面列出了一个示例，说明了给定断言函数的正面和负面测试用例：

例子 ：

Python3

# test suite
import unittest
  
class TestStringMethods(unittest.TestCase):
    
    # negative test function to test if values1 is greater or equal than value2
    def test_negativeForGreaterEqual(self):
        first = 4
        second = 5
          
        # error message in case if test case got failed
        message = "first value is not greater or equal than second value."
          
        # assert function() to check if values1 is greater or equal than value2
        self.assertGreaterEqual(first, second, message)
  
if __name__ == '__main__':
    unittest.main()

输出：

F
======================================================================
FAIL: test_negativeForGreaterEqual (__main__.TestStringMethods)
———————————————————————-
Traceback (most recent call last):
File “p1.py”, line 13, in test_negativeForGreaterEqual
  self.assertGreaterEqual(first, second, message)
AssertionError: 4 not greater than or equal to 5 : first value is not greater or equal than second value.

———————————————————————-
Ran 1 tests in 0.000s

FAILED (failures=1)

示例 2：

Python

# test suite
import unittest
  
class TestStringMethods(unittest.TestCase):
  
    # positive test function to test if values1 is greater than or equal to value2
    def test_positiveForGreaterEqual(self):
        first = 4
        second = 4
          
        # error message in case if test case got failed
        message = "first value is not greater or equal than second value."
          
        # assert function() to check if values1 is greater or equal than value2
        self.assertGreaterEqual(first, second, message)
  
  
if __name__ == '__main__':
    unittest.main()

输出：

.
———————————————————————-
Ran 1 test in 0.000s

OK