python自动化测试之setUp与tearDown实例

实例代码如下：

class RomanNumeralConverter(object): 
 def __init__(self): 
 self.digit_map = {"M":1000, "D":500, "C":100, "L":50, "X":10, 
 "V":5, "I":1} 
 def convert_to_decimal(self, roman_numeral): 
 val = 0 
 for char in roman_numeral: 
 val += self.digit_map[char] 
 return val 
 
 
import unittest 
class RomanNumeralConverterTest(unittest.TestCase): 
 def setUp(self): 
 print "Create a new RomanNumeralConverterTest....." 
 self.cvt = RomanNumeralConverter() 
 
 def tearDown(self): 
 print "Destroying a RomanNumeralConverterTest...." 
 self.cvt = None 
 
 def test_parsing_millenia(self): 
 self.assertEquals(1000, self.cvt.convert_to_decimal("M")) 
 
 
if __name__ == "__main__": 
 unittest.main()

输出结果如下：

Create a new RomanNumeralConverterTest.....
Destroying a RomanNumeralConverterTest....
.
----------------------------------------------------------------------
Ran 1 test in 0.016s

OK

注：setUp和tearDown在每个测试方法运行时被调用