hypothesis

hypothesis用于创建单元测试的Python库

安装

pip install hypothesis

 

 

应用：

　　利用hypothesis生成测试数据

test.py

def add(a, b):
    return a + b

使用随机数生成测试数据

test1.py

import unittest

from random import randint
from test import add

class AddTest(unittest.TestCase):
    def test_case1(self):
        for i in range(10):
            a=randint(-32768,32767)
            b=randint(-32768,32767)
            print(a,b)
            c1=a+b
            c2=add(a,b)
            self.assertEqual(c1,c2)
            
if __name__=="__main__":
    unittest.main()

 

 test2.py

import unittest
from hypothesis import given, settings
import hypothesis.strategies as st
from test import add

class AddTest(unittest.TestCase):

    @settings(max_examples=10)
    @given(a=st.integers(), b=st.integers())
    def test_case(self, a, b):
        print("a->", a)
        print("b->", b)
        c1 = a + b
        c2 = add(a, b)
        self.assertEqual(c1, c2)

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

 

通过@given() 装饰测试用例

调用strategies 模块下面的 integers() 方法生成随机的测试数

在@setting()装饰器中通过max_examples用来控制随机数的个数

生成email

import unittest
from hypothesis import given, settings
import hypothesis.strategies as st

class AddTest(unittest.TestCase):
    @settings(max_examples=20)
    @given(o=st.emails())
    def test_case(self,o):
        print(o)

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

https://hypothesis.readthedocs.io/en/latest/index.html