pytest自定义命令行参数的实现

#  在pytest的固定文件中conftest.py中

def pytest_addoption(parser):
    """
    自定义pytest的命令行参数，@pytest.fixture配合下面的方法一起用
    :param parser:
    :return:
    """
    parser.addoption("--mitm_path", action="store",
                     default="",
                     type=str,
                     help="--mitm_path：mitmproxy生成的cvs文件名称")
    parser.addoption("--mitm_proxy", action="store",
                     default="127.0.0.1:8080",
                     type=str,
                     help="--mitm_proxy：mitmproxy设置代理")

@pytest.fixture(scope="session", autouse=True)
def set_env_mitm_path(request):
    """
    将--mitm_path从命令行中获取放入环境变量中，给mitmdump工具用
    :param request:
    :return:
    """
    mitm_value = request.config.getoption("--mitm_path")
    os.environ['mitm_path'] = mitm_value
    print('\n --mitm_path参数值：', mitm_value)
    return mitm_value


@pytest.fixture(scope="session", autouse=True)
def set_env_mitm_proxy(request):
    """
    将--mitm_proxy从命令行中获取放入环境变量中，给mitmdump工具用
    :param request:
    :return:
    """
    mitm_proxy = request.config.getoption("--mitm_proxy")
    os.environ['mitm_proxy'] = mitm_proxy
    print('\n --mitm_proxy参数值：', mitm_proxy)
    return mitm_proxy


@pytest.fixture(scope="session")
def setup_mitmdump():
    """
    pytest启动，cmd启动一个mitmdump的进程
    :return: 
    """
    if not os.environ.get("mitm_path"):
        # 命令行没有传入mitm_path的值，给默认值一个
        caller = os.environ.get('PYTEST_CURRENT_TEST').split(':')[-1].split(' ')[0]
        mitm_path = "./testdata/" + caller + ".csv"
        os.environ["mitm_path"] = mitm_path
    cmd = r"mitmdump -p {}".format(os.environ.get("mitm_proxy") if os.environ.get("mitm_proxy") else '8080')
    process = subprocess.Popen(cmd, creationflags=subprocess.CREATE_NEW_CONSOLE)
    time.sleep(1)
    yield
    time.sleep(6)
    print("stop mitm")
    process.kill()

import csv
import os
import time

import pytest
import requests


class TestDemo:

    @pytest.mark.usefixtures("setup_mitmdump")
    @pytest.mark.parametrize(
        "name,assert_word",
        [
            pytest.param("1", "smart", id="第一个"),
            pytest.param("2", "smart", id="第二个")
        ]
    )
    def test_001(self, name, assert_word):
        print("我是用例test_%s" % name)
        url = "http://httpbin.org/get"
        params = {}
        headers = {"content-type": "application/json; charset=UTF-8"}
        proxies = {'http': 'http://127.0.0.1:%s' % os.environ.get("mitm_proxy")}  # ip地址
        option = requests.get(url=url, headers=headers, params=params, proxies=proxies)
        time.sleep(10)