python单元测试框架-unittest（二）之断言

断言内容是自动化脚本的重要内容，正确设置断言以后才能帮助我们判断测试用例执行结果。

断言方法

• assertEqual(a, b) 判断a==b
• assertNotEqual(a, b) 判断a！=b
• assertTrue(x) bool(x) is True
• assertFalse(x) bool(x) is False
• assertIs(a, b) a is b
• assertIsNot(a, b) a is not b
• assertIsNone(x) x is None
• assertIsNotNone(x) x is not None
• assertIn(a, b) a in b
• assertNotIn(a, b) a not in b
• assertIsInstance(a, b) isinstance(a, b)
• assertNotIsInstance(a, b) not isinstance(a, b)

实例

 #coding=utf-8
 import unittest
 from caculator import Math
 class TestMath(unittest.TestCase):
     def setUp(self):
         print("Start test")

     def test_add(self):
         j=Math(5,10)
         self.assertEqual(j.add(),15)
         #用例失败场景
         # self.assertEqual(j.add(),12)
     def test_add1(self):
         j=Math(5,10)
         self.assertNotEqual(j.add(),10)

     def test_add2(self):
         j=Math(5,10)
         self.assertTrue(j.add()>10)

     def test_add3(self):
         self.assertIs("博客", '博客')
         # self.assertIs("博客",'abc')

     def test_add4(self):
         self.assertIn("博客", "hello,博客")
         self.assertIn("", "hello,博客")

     def tearDown(self):
         print("test end")

 if __name__=='__main__':
     #构造测试集
     suite=unittest.TestSuite()
     suite.addTest(TestMath("test_add2"))
     #执行测试
     runner=unittest.TextTestRunner()
     runner.run(suite)