testing.py

import boto3
from mock import patch
from moto import mock_s3


class S3StorageTestMixin(object):

    s3_bucket = 'test-bucket'

    def setUp(self):
        s3_mock = mock_s3()
        s3_mock.start()
        resource = boto3.resource('s3', region_name='somewhere')
        self.s3_bucket = resource.create_bucket(Bucket=self.s3_bucket)
        patched_storage_s3_client = patch(
            'cubicweb_s3storage.storages.S3Storage._s3_client',
            return_value=boto3.client('s3'),
        )
        patched_storage_s3_client.start()
        self._mocks = [
            s3_mock,
            patched_storage_s3_client,
        ]
        super(S3StorageTestMixin, self).setUp()

    def tearDown(self):
        super(S3StorageTestMixin, self).tearDown()
        while self._mocks:
            self._mocks.pop().stop()