Amazon web services Moto不适用于python单元测试设置（）调用

我正在使用moto和Python3.7模拟一些S3交互。如果测试方法中包含所有模拟代码，那么moto似乎工作正常。当我将一些预备代码移动到

setUp（）

时，测试失败，就好像

setUp（）

从未运行过一样

import unittest

import boto3
from moto import mock_s3

class BucketFacadeTests(unittest.TestCase):

    @mock_s3
    def setUp(self):
        print('setUp called')
        s3 = boto3.resource('s3', region_name='us-east-1')
        s3.create_bucket(Bucket='bucket')
        key = 'a/b/c/d.txt'
        object = s3.Object('bucket', key)
        object.put(Body='my dog has fleas')

    def do_test(self):
        s3 = boto3.resource('s3', region_name='us-east-1')
        the_object = s3.Object('bucket', 'a/b/c/d.txt')
        string_data = the_object.get()['Body'].read().decode('utf-8')
        self.assertEqual('my dog has fleas', string_data)

    @mock_s3
    def test_bucket_can_be_accessed_with_setup(self):
        self.do_test()

    @mock_s3
    def test_bucket_can_be_accessed_without_setup(self):
        # This does what setUp() should
        s3 = boto3.resource('s3', region_name='us-east-1')
        s3.create_bucket(Bucket='bucket')
        key = 'a/b/c/d.txt'
        object = s3.Object('bucket', key)
        object.put(Body='my dog has fleas')

        self.do_test()

当我不依赖

setUp（）

时，一切都按预期运行

Testing started at 07:49 ...
/Users/paul/.virtualenvs/nui-converter/bin/python "/Applications/PyCharm CE.app/Contents/helpers/pycharm/_jb_unittest_runner.py" --target BucketFacade2Tests.BucketFacadeTests.test_bucket_can_be_accessed_without_setup
Launching unittests with arguments python -m unittest BucketFacade2Tests.BucketFacadeTests.test_bucket_can_be_accessed_without_setup in /Users/Paul/as/nui-converter/tests/InventoryLoader
setUp called


Ran 1 test in 0.103s

OK

Process finished with exit code 0

然而，当我依赖

setUp（）

---

我是做错了什么还是把moto推到了极限之外了？

问题是您正在将模拟s3装饰器直接应用到

setUp（）

方法和

测试方法中。这会导致单独的模拟s3环境，因此不会共享在
setUp（）
方法中完成的任何操作

解决方案是将
@mock_s3
装饰器应用于整个
BucketFacadeTests
类

下面的代码应按预期工作

import unittest

import boto3
from moto import mock_s3

@mock_s3
class BucketFacadeTests(unittest.TestCase):


    def setUp(self):
        print('setUp called')
        s3 = boto3.resource('s3', region_name='us-east-1')
        s3.create_bucket(Bucket='bucket')
        key = 'a/b/c/d.txt'
        object = s3.Object('bucket', key)
        object.put(Body='my dog has fleas')

    def do_test(self):
        s3 = boto3.resource('s3', region_name='us-east-1')
        the_object = s3.Object('bucket', 'a/b/c/d.txt')
        string_data = the_object.get()['Body'].read().decode('utf-8')
        self.assertEqual('my dog has fleas', string_data)

    def test_bucket_can_be_accessed_with_setup(self):
        self.do_test()

    def test_bucket_can_be_accessed_without_setup(self):
        # This does what setUp() should
        s3 = boto3.resource('s3', region_name='us-east-1')
        s3.create_bucket(Bucket='bucket')
        key = 'a/b/c/d.txt'
        object = s3.Object('bucket', key)
        object.put(Body='my dog has fleas')

        self.do_test()

import unittest

import boto3
from moto import mock_s3

@mock_s3
class BucketFacadeTests(unittest.TestCase):


    def setUp(self):
        print('setUp called')
        s3 = boto3.resource('s3', region_name='us-east-1')
        s3.create_bucket(Bucket='bucket')
        key = 'a/b/c/d.txt'
        object = s3.Object('bucket', key)
        object.put(Body='my dog has fleas')

    def do_test(self):
        s3 = boto3.resource('s3', region_name='us-east-1')
        the_object = s3.Object('bucket', 'a/b/c/d.txt')
        string_data = the_object.get()['Body'].read().decode('utf-8')
        self.assertEqual('my dog has fleas', string_data)

    def test_bucket_can_be_accessed_with_setup(self):
        self.do_test()

    def test_bucket_can_be_accessed_without_setup(self):
        # This does what setUp() should
        s3 = boto3.resource('s3', region_name='us-east-1')
        s3.create_bucket(Bucket='bucket')
        key = 'a/b/c/d.txt'
        object = s3.Object('bucket', key)
        object.put(Body='my dog has fleas')

        self.do_test()