pytest 用 @pytest.mark.usefixtures("fixtureName")装饰类，可以让执行每个case前，都执行一遍指定的fixture

conftest.py

import pytest
import uuid

@pytest.fixture()
def declass():
    print("declass:"+str(uuid.uuid4()))
    return "declass"

test_forclass.py

import pytest


@pytest.mark.usefixtures("declass")
class TestClass(object):
    def test_case1(self):
        print("test_case1:")
        assert 0==0


    def test_case2(self):
        print("test_case2:")
        assert 0 == 0

执行结果：

可以从结果中看到每个case执行前，都执行了declass这个fixture，且每次都是重新调用。  （这种使用方法，从官方给出的例子来看，应该用于数据清理或准备比较合适。）

还支持引用多个fixture

conftest.py

import pytest
import uuid

@pytest.fixture()
def declass():
    print("declass:"+str(uuid.uuid4()))
    return "declass"

@pytest.fixture()
def declass2():
    print("declass2:"+str(uuid.uuid4()))
    return "declass2"

test_forclass.py

@pytest.mark.usefixtures("declass","declass2")
class TestClass(object):
    def test_case1(self):
        print("test_case1:")
        assert 0==0


    def test_case2(self):
        print("test_case2:")
        assert 0 == 0

执行结果：