Pytest框架之fixture的详细使用教程

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
__title__ =
__Time__ = 2020-04-06 15:50
__Author__ = 小菠萝测试笔记
__Blog__ = https://www.cnblogs.com/poloyy/
"""
import pytest
# 调用方式一
@pytest.fixture
def login():
 print("输入账号，密码先登录")

def test_s1(login):
 print("用例 1：登录之后其它动作 111")

def test_s2(): # 不传 login
 print("用例 2：不需要登录，操作 222")

# 调用方式二
@pytest.fixture
def login2():
 print("please输入账号，密码先登录")

@pytest.mark.usefixtures("login2", "login")
def test_s11():
 print("用例 11：登录之后其它动作 111")

# 调用方式三
@pytest.fixture(autouse=True)
def login3():
 print("====auto===")

# 不是test开头，加了装饰器也不会执行fixture
@pytest.mark.usefixtures("login2")
def loginss():
 print(123)

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
__title__ =
__Time__ = 2020-04-06 16:14
__Author__ = 小菠萝测试笔记
__Blog__ = https://www.cnblogs.com/poloyy/
"""
import pytest
order = []
@pytest.fixture(scope="session")
def s1():
 order.append("s1")
@pytest.fixture(scope="module")
def m1():
 order.append("m1")
@pytest.fixture
def f1(f3, a1):
 # 先实例化f3, 再实例化a1, 最后实例化f1
 order.append("f1")
 assert f3 == 123
@pytest.fixture
def f3():
 order.append("f3")
 a = 123
 yield a
@pytest.fixture
def a1():
 order.append("a1")
@pytest.fixture
def f2():
 order.append("f2")
def test_order(f1, m1, f2, s1):
 # m1、s1在f1后，但因为scope范围大，所以会优先实例化
 assert order == ["s1", "m1", "f3", "a1", "f1", "f2"]

@pytest.fixture(scope="session")
def open():
 print("===打开浏览器===")

@pytest.fixture
# @pytest.mark.usefixtures("open") 不可取！！！不生效！！！
def login(open):
 # 方法级别前置操作setup
 print(f"输入账号，密码先登录{open}")

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
__title__ =
__Time__ = 2020-04-06 15:50
__Author__ = 小菠萝测试笔记
__Blog__ = https://www.cnblogs.com/poloyy/
"""

import pytest

@pytest.fixture(scope="session")
def open():
 # 会话前置操作setup
 print("===打开浏览器===")
 test = "测试变量是否返回"
 yield test
 # 会话后置操作teardown
 print("==关闭浏览器==")

@pytest.fixture
def login(open):
 # 方法级别前置操作setup
 print(f"输入账号，密码先登录{open}")
 name = "==我是账号=="
 pwd = "==我是密码=="
 age = "==我是年龄=="
 # 返回变量
 yield name, pwd, age
 # 方法级别后置操作teardown
 print("登录成功")

def test_s1(login):
 print("==用例1==")
 # 返回的是一个元组
 print(login)
 # 分别赋值给不同变量
 name, pwd, age = login
 print(name, pwd, age)
 assert "账号" in name
 assert "密码" in pwd
 assert "年龄" in age

def test_s2(login):
 print("==用例2==")
 print(login)

# 官方例子
@pytest.fixture(scope="module")
def smtp_connection():
 with smtplib.SMTP("smtp.gmail.com", 587, timeout=5) as smtp_connection:
 yield smtp_connection # provide the fixture value

@pytest.fixture(scope="module")
def test_addfinalizer(request):
 # 前置操作setup
 print("==再次打开浏览器==")
 test = "test_addfinalizer"

 def fin():
 # 后置操作teardown
 print("==再次关闭浏览器==")

 request.addfinalizer(fin)
 # 返回前置操作的变量
 return test
def test_anthor(test_addfinalizer):
 print("==最新用例==", test_addfinalizer)