小编Leo*_*Glt的帖子

我正在为 pytest 制作一个测试类，我想设置一个a将用于多种测试方法的类属性。为此，我使用了一个固定装置set_a，它会自动启动autouse=True，并且只为类 ( scope='class') 调用一次，因为设置a成本很高。这是我的代码：

import pytest
import time


class Test:

    @pytest.fixture(scope='class', autouse=True)
    def set_a(self):
        print('Setting a...')
        time.sleep(5)
        self.a = 1

    def test_1(self):
        print('TEST 1')
        assert self.a == 1

但测试失败并出现以下错误：

========================================================================= FAILURES ==========================================================================
________________________________________________________________________ Test.test_1 ________________________________________________________________________

self = <tests.test_file.Test object at 0x116d953a0>

    def test_1(self):
        print('TEST 1')
>       assert self.a == 1
E       AttributeError: 'Test' object has no attribute 'a'

tests/test_file.py:15: AttributeError
------------------------------------------------------------------- Captured stdout setup -------------------------------------------------------------------
Setting a...
------------------------------------------------------------------- Captured …