python断言

Q：什么是断言？
A：我理解的断言就是一个命题，在程序执行中，命题为真则通过，命题为假则不通过。

关于assert用法，参考菜鸟教程：https://www.runoob.com/python3/python3-assert.html

总结以下9种python断言方式

1.状态

def test_get(self):
    r = requests.get('https://httpbin.testing-studio.com/get')
    print(r.next)
    print(r.json())
    print(r.status_code)
    assert r.status_code == 200

2.json

def test_post_json(self):
    payload = {
        "level": 1,
        "name": "zizi"
    }
    r = requests.post('https://httpbin.testing-studio.com/post', json=payload)
    print(r.text)
    assert r.json()['json']['level'] == 1

3.list结构里的json

def test_hogwarts_json(self):
    r = requests.get('https://home.testing-studio.com/categories.json')
    print(r.text)
    assert r.status_code == 200
    print(jsonpath.jsonpath(r.json(), '$..name')) #打印出所有的name
    assert r.json()['category_list']['categories'][0]['name'] == "开源项目" #json断言

4.jsonpath

def test_hogwarts_json(self):
    r = requests.get('https://home.testing-studio.com/categories.json')
    print(r.text)
    assert r.status_code == 200
    print(jsonpath.jsonpath(r.json(), '$..name')) #打印出所有的name
    assert jsonpath.jsonpath(r.json(),'$..name')[0] == "开源项目" #jsonpath断言

5.assert_that

def test_hamcrest(self):
    r = requests.get('https://home.testing-studio.com/categories.json')
    assert_that(r.json()['category_list']['categories'][0]['name'], equal_to("开源项目"))   #assert_that

6.post_xml

def test_post_xml(self):
    xml = """<xml version='1.0' encoding='utf-8'><a>6</a>"""
    headers = {"Content-Type": "application/xml"}

    r = requests.post('https://httpbin.testing-studio.com/post', data=xml,headers=headers).text
    print(r.text)

7.files

def test_files(self):
    url = 'https://httpbin.testing-studio.com/post'
    files = {'file': open('report.xls', 'rb')}
    r = requests.post(url, files=files)
    print(r.text)

8.header

def test_header(self):
    headers = {'user-agent': 'my-app/0.0.1'}
    r = requests.get('https://httpbin.testing-studio.com/get', headers=headers)
    print(r.text)
    assert r.json()['headers']["User-Agent"] == "my-app/0.0.1"

9.cookie

def test_cookie(self):
    cookies = dict(cookies_are='working')
    r = requests.get('https://httpbin.testing-studio.com/get', cookies=cookies)
    print(r.text)
    assert r.json()['headers']["Cookie"] == "cookies_are=working"