-----------待测试数据----------

class MathMethod:
    def __init__(self,a,b):
       self.a=a
       self.b=b
    def add(self):
        return self.a+self.b
    def sub(self):
        return self.a+self.b

---------测试case----------

import unittest
from request_unitest.class_mathmethod import MathMethod
class TestMathMethod(unittest.TestCase):
    def test_two_positive(self):
        result=MathMethod(1,2).add()
        try:                       #捕获异常
           self.assertEqual(3,result)           #断言
        except AssertionError as e:
            print("报错%s"%e)

    def test_two_negtive(self):
        result=MathMethod(-2,-3).sub()
        self.assertEqual(-5,result)

    def test_two_dif(self):
        result=MathMethod(-1,2).add()
        self.assertEqual(-5,result)

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

  ------------执行测试------------

import unittest
import HTMLTestRunnerNew  #注意需要提导入下载好的报告插件
from request_unitest.test_mathmethod import TestMathMethod
suite=unittest.TestSuite()
loader=unittest.TestLoader()
#加载测试用例
suite.addTest(loader.loadTestsFromTestCase(TestMathMethod))

#执行测试用例
# runner=unittest.TextTestRunner()
# runner.run(suite)

#将测试的结果写入到指定的文件中去
# with open('test.txt','w+') as file:
#     runner=unittest.TextTestRunner(file,'test',2)
#     runner.run(suite)

#生成测试报告
with open('report.html','wb+') as file:
    runner=HTMLTestRunnerNew.HTMLTestRunner(file,2,title='cr-test',description='unittest',tester='chenran')
    runner.run(suite)