pytest setup和teardown初始化

用法简介：
setup_method:仅作用于class用例集中的用例，置于class内,每个用例都会调用一次
setup_function:作用于独立的def用例，不可作用于class内的用例
setup_class:作用于class用例集中的用例，置于class内，只在class用例执行的开始执行setup_class,结束时执行teardown_class
setup_module:作用于模块内的所有用例，置于class外，只在所以用例的开始执行setup_module,结束时执行teardown_module
pytest.fixture():作用于模块内的所有用例，但需要传递装饰函数为参数，可置于class内或class外

1.setup_class 和teardown_class用法

# coding=utf-8
import pytest
from selenium import webdriver
import time


class Test(object):
    @classmethod
    def setup_class(cls):
        print("初始化浏览器")
        cls.driver=webdriver.Chrome()
        cls.driver.maximize_window()
        time.sleep(2)
        cls.driver.get("http://www.baidu.com")
    @classmethod
    def teardown_class(cls):
        cls.driver.close()
        print("关闭浏览器")
    def test_in01(self):
        self.driver.find_element_by_id("kw").send_keys("流浪的python")
        self.driver.find_element_by_id("su").click()
        print("0001 is ok")

    def test_in02(self):
        self.driver.find_element_by_xpath('//*[@id="s_tab"]/div/a[1]').click()
        time.sleep(3)
        print("002 is ok ")
============================= test session starts =============================
platform win32 -- Python 3.7.2, pytest-4.1.1, py-1.7.0, pluggy-0.8.1
rootdir: D:\Pycharm\PyCharm 5.0.4\jre\jre\bin, inifile:
plugins: xdist-1.26.0, rerunfailures-6.0, metadata-1.8.0, html-1.20.0, forked-1.0.1, allure-pytest-2.5.4
collected 2 items

. 初始化浏览器
0001 is ok
.002 is ok 
.关闭浏览器


2.setup_method 和teardown_method 用法
class TestMethod(object):

    def setup_method(self):
        print("初始化浏览器")
        self.driver=webdriver.Chrome()
        self.driver.maximize_window()
        self.driver.get("http://www.baidu.com")
    def teardown_method(self):
        self.driver.close()
        print("关闭浏览器")
    def test_in01(self):
        self.driver.find_element_by_id("kw").send_keys("流浪的python")
        self.driver.find_element_by_id("su").click()
        print("第一次打开浏览器is ok")

    def test_in02(self):
        self.driver.find_element_by_id("kw").send_keys("流浪的python")
        self.driver.find_element_by_id("su").click()
        self.driver.find_element_by_xpath('//*[@id="s_tab"]/div/a[1]').click()
        time.sleep(3)
        print("第二次打开浏览器 is ok ")

============================= test session starts =============================
platform win32 -- Python 3.7.2, pytest-4.1.1, py-1.7.0, pluggy-0.8.1
rootdir: D:\Pycharm\PyCharm 5.0.4\jre\jre\bin, inifile:
plugins: xdist-1.26.0, rerunfailures-6.0, metadata-1.8.0, html-1.20.0, forked-1.0.1, allure-pytest-2.5.4
collected 2 items

. 初始化浏览器
第一次打开浏览器is ok
.关闭浏览器
初始化浏览器
第二次打开浏览器 is ok
.关闭浏览器

3. pytest.fixture用法介绍

# coding=utf-8
import pytest
from selenium import webdriver
from pyfoo.Utils.pageobj import GetEle
from pyfoo.Utils.pageobj import *
@pytest.fixture(scope="class")
def driver():
    url="http://www.baidu.com"
    driver= webdriver.Chrome()
    driver.get(url)
    print("初始化完成...")
    yield driver
    driver.close()
    print("teardown...关闭浏览器")

# @pytest.mark.usefixtures("driver")
class Test_fix_module(object):

    def test_open_bd(self,driver):
        GetEle().ele_by_id(driver,'kw').send_keys("pytest")
        GetEle().ele_by_id(driver,'su').click()
        print("搜索资源case成功")
    def test_open_tb(self,driver):
        GetEle().ele_by_xpath(driver,'//*[@id="s_tab"]/div/a[1]').click()
        print("进入资讯case成功")

if __name__ == "__main__":
    pytest.main(['-v','-s','-q'])

. 初始化完成...
搜索资源case成功
.进入资讯case成功
.teardown...关闭浏览器

4.setup_module 和teardown_module

# coding=utf-8
import pytest
from selenium import webdriver
import time
def setup_module():
    global driver
    driver=webdriver.Chrome()
    driver.maximize_window()
    time.sleep(2)
    driver.get("http://www.baidu.com")
    print("开始模块初始化浏览器")
def teardown_module():
    driver.close()
    print("模块执行结束关闭浏览器")
class TestModule(object):
    def test_001(self):
        driver.find_element_by_id("kw").send_keys("流浪的python")
        driver.find_element_by_id("su").click()
        print("test_001 is ok ")
    def test_002(self):
        driver.find_element_by_xpath('//*[@id="s_tab"]/div/a[1]').click()
        time.sleep(3)
        print("test_002 is ok ")

. 开始模块初始化浏览器
test_001 is ok
.test_002 is ok
.模块执行结束关闭浏览器

5.setup_function 和 teardown_function

# coding=utf-8
import pytest
from selenium import webdriver
import time

def setup_function():
    print("setup_function():每个函数之前执行")


def teardown_function():
    print ("teardown_function():每个函数之后执行")


def test_01():
    print ("正在执行函数test1")
    x = "this"
    assert 'h' in x

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


def test_add():
    print ("正在执行test_add()")
    assert add(3,4) == 7

. setup_function():每个函数之前执行
正在执行函数test1
.teardown_function():每个函数之后执行
setup_function():每个函数之前执行
正在执行test_add()
.teardown_function():每个函数之后执行