测试用例上方使用多个fixtures叠加时，是从下往上进行fixtures调用的。如果是 @pytest.mark.usefixtures('action','a','action2')这种形式，是从左往右进行fixtures调用的.

#Below are test_pytest_markers.py

# content of test_server.py

import pytest

@pytest.mark.webtest

def test_send_http():

pass # perform some webtest test for your app

def test_something_quick():

pass

def test_another():

pass

class TestClass:

def test_method(self):

pass

C:\Users\PycharmProjects\pytest_example>pytest -v -m "webtest" test_pytest_markers.py

============================= test session starts =============================

platform win32 -- Python 2.7.13, pytest-3.0.6, py-1.4.32, pluggy-0.4.0 -- C:\Python27\python.exe

cachedir: .cache

rootdir: C:\Users\PycharmProjects\pytest_example, inifile:

collected 4 items 

test_pytest_markers.py::test_send_http PASSED

============================= 3 tests deselected ==============================

=================== 1 passed, 3 deselected in 0.04 seconds ====================