Pytest系列(10) - fixture 传参数 request的详细使用

如果你还想从头学起Pytest,可以看看这个系列的文章哦!

https://www.cnblogs.com/poloyy/category/1690628.html

 

前言

  • 为了提高复用性,我们在写测试用例的时候,会用到不同的fixture,比如:最常见的登录操作,大部分的用例的前置条件都是登录
  • 假设不同的用例想登录不同的测试账号,那么登录fixture就不能把账号写死,需要通过传参的方式来完成登录操作

 

案例一:传单个参数

import pytest


@pytest.fixture()
def login(request):
    name = request.param
    print(f"== 账号是:{name} ==")
    return name


data = ["pyy1", "polo"]
ids = [f"login_test_name is:{name}" for name in data]


@pytest.mark.parametrize("login", data, ids=ids, indirect=True)
def test_name(login):
    print(f" 测试用例的登录账号是:{login} ")

执行结果

collecting ... collected 2 items

10fixture_request.py::test_name[login_test_name is:pyy1] == 账号是:pyy1 ==
PASSED          [ 50%] 测试用例的登录账号是:pyy1 

10fixture_request.py::test_name[login_test_name is:polo] == 账号是:polo ==
PASSED          [100%] 测试用例的登录账号是:polo 

知识点

  • 添加  indirect=True  参数是为了把 login 当成一个函数去执行,而不是一个参数,并且将data当做参数传入函数
  • def test_name(login) ,这里的login是获取fixture返回的值

 

案例二:多个参数

@pytest.fixture()
def logins(request):
    param = request.param
    print(f"账号是:{param['username']},密码是:{param['pwd']}")
    return param


data = [
    {"username": "name1", "pwd": "pwd1"},
    {"username": "name2", "pwd": "pwd2"},
]


@pytest.mark.parametrize("logins", data, indirect=True)
def test_name_pwd(logins):
    print(f"账号是:{logins['username']},密码是:{logins['pwd']}")

执行结果

10fixture_request.py::test_name_pwd[logins0] 账号是:name1,密码是:pwd1
PASSED                      [ 50%]账号是:name1,密码是:pwd1

10fixture_request.py::test_name_pwd[logins1] 账号是:name2,密码是:pwd2
PASSED                      [100%]账号是:name2,密码是:pwd2

知识点

如果需要传多个参数,需要通过字典去传

 

案例三:多个fixture(只加一个装饰器)

这种更常用

# 多个fixture
@pytest.fixture(scope="module")
def input_user(request):
    user = request.param
    print("登录账户:%s" % user)
    return user


@pytest.fixture(scope="module")
def input_psw(request):
    psw = request.param
    print("登录密码:%s" % psw)
    return psw


data = [
    ("name1", "pwd1"),
    ("name2", "pwd2")
]


@pytest.mark.parametrize("input_user,input_psw", data, indirect=True)
def test_more_fixture(input_user, input_psw):
    print("fixture返回的内容:", input_user, input_psw)

执行结果

10fixture_request.py::test_more_fixture[name1-pwd1] 登录账户:name1
登录密码:pwd1
PASSED               [ 50%]fixture返回的内容: name1 pwd1

10fixture_request.py::test_more_fixture[name2-pwd2] 登录账户:name2
登录密码:pwd2
PASSED               [100%]fixture返回的内容: name2 pwd2

 

案例四:多个fixture(叠加装饰器)

# 多个fixture
@pytest.fixture(scope="function")
def input_user(request):
    user = request.param
    print("登录账户:%s" % user)
    return user


@pytest.fixture(scope="function")
def input_psw(request):
    psw = request.param
    print("登录密码:%s" % psw)
    return psw


name = ["name1", "name2"]
pwd = ["pwd1", "pwd2"]


@pytest.mark.parametrize("input_user", name, indirect=True)
@pytest.mark.parametrize("input_psw", pwd, indirect=True)
def test_more_fixture(input_user, input_psw):
    print("fixture返回的内容:", input_user, input_psw)

执行结果

10fixture_request.py::test_more_fixture[pwd1-name1] 登录账户:name1
登录密码:pwd1
PASSED               [ 25%]fixture返回的内容: name1 pwd1

10fixture_request.py::test_more_fixture[pwd1-name2] 登录账户:name2
登录密码:pwd1
PASSED               [ 50%]fixture返回的内容: name2 pwd1

10fixture_request.py::test_more_fixture[pwd2-name1] 登录账户:name1
登录密码:pwd2
PASSED               [ 75%]fixture返回的内容: name1 pwd2

10fixture_request.py::test_more_fixture[pwd2-name2] 登录账户:name2
登录密码:pwd2
PASSED               [100%]fixture返回的内容: name2 pwd2

测试用例数=2*2=4条

 

posted @ 2020-04-12 22:41  小菠萝测试笔记  阅读(5118)  评论(5编辑  收藏  举报