@pytest.fixture(scope="session", autouse=True)

0_pytest.md

有時候在跑unittest的時候，需要一些前置作業，多半可以寫在setUp或tearDown上

pytest提供fixture, 可以定義每一次的跑unitest的session, module, class, method，都預先跑某個準備函式

例如，我希望跑unittest時先起一個mock database,並在結束時，關掉這個mock database 就可以寫在conftest.py上

#conftest.py 

@pytest.fixture(scope="session", autouse=True)
def on_begin(request):
    print "on_begin"
    def on_finish():
      print "in_finish"
      request.addfinalizer(on_finish)

conftest.py

# -*- coding: utf-8 -*-

import pytest


@pytest.fixture(scope="session", autouse=True)
def callattr_ahead_of_alltests(request):
    print "before all test start"

    def on_session_finish():
        print "after all test start"

    request.addfinalizer(on_session_finish)

test_one.py

# -*- coding: utf-8 -*-

import unittest


def test_one():
    """test_one"""
    assert True


class PublicTest(unittest.TestCase):
    def setUp(self):
        pass

    def tearDown(self):
        pass

    def test_two(self):
        """test_two"""
        self.assertTrue(True)