unittest断言

import unittest
class xixi(unittest.TestCase):
    def test_1(self):
        a=3
        b=4
        #self.assertEqual(a,b) #a,b是否相等，不相等则报错
        #self.assertNotEqual(a,b) #a,b不相等，则成功
    def test_2(self):
        aa=5
        self.assertTrue(aa) #aa是True，则成功
        #self.assertFalse(aa) #aa是False,则成功
    def test_3(self):
        aaa='a is a'
        bbb='a is b'
        #self.assertIs(aaa,bbb) #验证是同一对象
        self.assertIsNot(aaa,bbb)
    def test_4(self):
        a4=""
        #self.assertIsNone(a4) #验证是None
        self.assertIsNotNone(a4) #验证不是None
    def test_5(self):
        a5='a is a common letter'
        b5='yis a common letter'
        #self.assertIn(b5,a5)#验证b5是a5的子串
        self.assertNotIn(b5,a5,msg='b5 in a5') #验证b5不是a5的子串

if __name__=="__main__":
    unittest.main()