測試框架pyunit,pyounit帶assert

if+raise可用于被預見到的情況

assert 用于永遠不可能發(fā)生的情況

assert x》=0,''x is less than zero'

if x<0:

raise exception,'x is less than zero'

斷言

測試的檢查點

測試用例=測試數據+測試步驟+斷言

判斷是無二義性的

測試除法

自定義1個除法函數div

測試 1 / 1

測試 3 / 4

測試 3 / 0

importunittest

defdiv(a,b):

returna/b#1/2=1

classMyFirstCase(unittest.TestCase):

defsetUp(self):

print('run before every test ')

deftearDown(self):

print('run after every test')

deftest_1_div_1(self):

print('1 div 1')

self.assertEqual(div(1,1),1/1)

deftest_3_div_4(self):

print('3 div 4')

self.assertEqual(div(3,4),3/4)

deftest_3_div_0(self):

print('3 / 0')

self.assertRaises(ZeroDivisionError,div,3,0)? #3/0要利用ZeroDivisionError,

if__name__=='__main__':

unittest.main()