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