class MathCalculate:
 '''
 加减乘除的计算类
 '''
 def __init__(self, first_num, second_num):
  self.first_num = first_num
  self.second_num = second_num

 def add(self):
  '''
  加法
  :return:
  '''
  return self.first_num + self.second_num

 def subtract(self):
  '''
  减法
  :return:
  '''
  return self.first_num - self.second_num

 def multiply(self):
  '''
  乘法
  :return:
  '''
  return self.first_num * self.second_num

 def divide(self):
  '''
  除法
  :return:
  '''
  try:
   return round(self.first_num / self.second_num, 2)
  except ZeroDivisionError:
   return '∞'

import unittest
from python_for_unittest_testsuite.MathCalculate import MathCalculate as MC


class TestMathCalculate(unittest.TestCase):
 '''
 测试加减乘除类
 '''

 def test_add(self):
  actual = MC(1, 1).add()
  self.assertEqual(2, actual, msg='两数相加测试失败')

 def test_subtract(self):
  actual = MC(1, 1).subtract()
  self.assertEqual(0, actual, msg='两数相减测试失败')

 def test_multiply(self):
  actual = MC(1, 1).multiply()
  self.assertEqual(1, actual, msg='两数相乘测试失败')

 def test_divide(self):
  actual = MC(1, 1).divide()
  self.assertEqual(1, actual, msg='两数相除测试失败')


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

import unittest
from python_for_unittest_testsuite.test_math_calculate import TestMathCalculate

suite = unittest.TestSuite()
# 增加一条用例 addTest()方法传入：类名(测试方法名)
suite.addTest(TestMathCalculate('test_add'))
suite.addTest(TestMathCalculate('test_subtract'))
suite.addTest(TestMathCalculate('test_multiply'))
suite.addTest(TestMathCalculate('test_divide'))

# 上下文管理器，生成测试报告
with open('test_math.txt', mode='w+', encoding='utf-8') as f:
 runner = unittest.TextTestRunner(f, 'text', 2)
 runner.run(suite)

import unittest
from python_for_unittest_testsuite.test_math_calculate import TestMathCalculate

suite = unittest.TestSuite()
loader = unittest.TestLoader()
# 加载测试类
suite.addTest(loader.loadTestsFromTestCase(TestMathCalculate))


# 上下文管理器，生成测试报告
with open('test_math.txt', mode='w+', encoding='utf-8') as f:
 runner = unittest.TextTestRunner(f, 'text', 2)
 runner.run(suite)

import unittest
from python_for_unittest_testsuite import test_math_calculate


suite = unittest.TestSuite()
loader = unittest.TestLoader()
# 加载测试模块
suite.addTest(loader.loadTestsFromModule(test_math_calculate))


# 上下文管理器，生成测试报告
with open('test_math.txt', mode='w+', encoding='utf-8') as f:
 runner = unittest.TextTestRunner(f, 'text', 2)
 runner.run(suite)

import unittest

# 根据传入的测试模块的所属目录路径自动去查找
suite = unittest.defaultTestLoader.discover("G:\pycharm\PycharmProjects\python_class\python_for_unittest_testsuite")

# 上下文管理器，生成测试报告
with open('test_math.txt', mode='w+', encoding='utf-8') as f:
 runner = unittest.TextTestRunner(f, 'text', 2)
 runner.run(suite)