内置pytestconfig 动态添加和获取 pytest.ini 配置参数

pytestconfig 可以获取到 pytest.ini 里面的配置参数。

在写自动化用例的时候，有一些配置 参数希望能加到配置里面，如configid, productid, 以及测试环境的base_url地址，和账号相关信息。

 

addini的源码阅读

addini 有四个参数： name, help, type=None, default=None

def addini(self, name, help, type=None, default=None):
     """ register an ini-file option.
     :name: name of the ini-variable
     :type: type of the variable, can be ``pathlist``, ``args``, ``linelist`` or ``bool``.
     :default: default value if no ini-file option exists but is queried.
 
     The value of ini-variables can be retrieved via a call to
     :py:func:`config.getini(name) <_pytest.config.Config.getini>`.
     """
     assert type in (None, "pathlist", "args", "linelist", "bool")
     self._inidict[name] = (help, type, default)
     self._ininames.append(name)

 

动态添加配置信息

添加命令行参数可以用 addoption 来添加命令行参数，这里我们是添加 pytest.ini 的配置信息

addini 里面参数说明 

• 第一个'url'是参数的名称
• type 是类型，默认 None, 可以设置：None, "pathlist", "args", "linelist", "bool"
• default 是设置的默认值
• help 是设置帮助文档，方便查阅

import pytest
 
def pytest_addoption(parser):
    parser.addoption(
        "--cmdopt", action="store", default="type1", help="my option: type1 or type2"
    )
    parser.addini('url', type=None, default="http://www.baidu.com", help="添加 url 访问定制参数")
 
# 获取pytest.ini 配置文件参数
@pytest.fixture(scope="session")
def home_url(pytestconfig):
    url = pytestconfig.getini("url")
    print("\n读取配置文件的url地址：{}".format(url))
    return url

参数用例传 home_url

 

def test_h(home_url):
    print("用例：{}".format(home_url))

 

运行结果

============================================================================================== test session starts ==============================================================================================
platform win32 -- Python 3.7.0, pytest-3.9.3, py-1.7.0, pluggy-0.12.0 -- c:\users\93724\appdata\local\programs\python\python37\python.exe
cachedir: .pytest_cache
metadata: {'Python': '3.7.0', 'Platform': 'Windows-10-10.0.18362-SP0', 'Packages': {'pytest': '3.9.3', 'py': '1.7.0', 'pluggy': '0.12.0'}, 'Plugins': {'allure-pytest': '2.7.0', 'forked': '0.2', 'html': '1.21.1'
, 'metadata': '1.8.0', 'ordering': '0.6', 'repeat': '0.8.0', 'rerunfailures': '5.0', 'xdist': '1.24.1'}, 'JAVA_HOME': 'C:\\Program Files\\Java\\jdk1.8.0_131'}
rootdir: D:\pythonProject\fixture_request, inifile: pytest.ini
plugins: allure-pytest-2.7.0, forked-0.2, html-1.21.1, metadata-1.8.0, ordering-0.6, repeat-0.8.0, rerunfailures-5.0, xdist-1.24.1
collected 1 item                                                                                                                                                                                                 
test_03.py::test_h
读取配置文件的url地址：http://www.baidu.com
用例：http://www.baidu.com
PASSED
 
 
=========================================================================================== 1 passed in 0.03 seconds ============================================================================================

 

pytest.ini 配置 url 地址

 

如果有一天测试环境发生了改变，这时候不需要去改代码，只需要在 pytest.ini 配置一个环境地址

[pytest]
url = https://www.cnblogs.com/HandsUp/

 

重新运行，我们得到的结果是

============================================================================================== test session starts ==============================================================================================
platform win32 -- Python 3.7.0, pytest-3.9.3, py-1.7.0, pluggy-0.12.0 -- c:\users\93724\appdata\local\programs\python\python37\python.exe
cachedir: .pytest_cache
metadata: {'Python': '3.7.0', 'Platform': 'Windows-10-10.0.18362-SP0', 'Packages': {'pytest': '3.9.3', 'py': '1.7.0', 'pluggy': '0.12.0'}, 'Plugins': {'allure-pytest': '2.7.0', 'forked': '0.2', 'html': '1.21.1'
, 'metadata': '1.8.0', 'ordering': '0.6', 'repeat': '0.8.0', 'rerunfailures': '5.0', 'xdist': '1.24.1'}, 'JAVA_HOME': 'C:\\Program Files\\Java\\jdk1.8.0_131'}
rootdir: D:\pythonProject\fixture_request, inifile: pytest.ini
plugins: allure-pytest-2.7.0, forked-0.2, html-1.21.1, metadata-1.8.0, ordering-0.6, repeat-0.8.0, rerunfailures-5.0, xdist-1.24.1
collected 1 item                                                                                                                                                                                                 
 
test_03.py::test_h
读取配置文件的url地址：https://www.cnblogs.com/HandsUp/
用例：https://www.cnblogs.com/HandsUp/
PASSED
 
 
=========================================================================================== 1 passed in 0.03 seconds ============================================================================================