I am writing test cases for a quick class to find / fetch keys from s3, using boto3. I have used moto in the past to test boto (not 3) code but am trying to move to boto3 with this project, and running into an issue:
class TestS3Actor(unittest.TestCase):
@mock_s3
def setUp(self):
self.bucket_name = 'test_bucket_01'
self.key_name = 'stats_com/fake_fake/test.json'
self.key_contents = 'This is test data.'
s3 = boto3.session.Session().resource('s3')
s3.create_bucket(Bucket=self.bucket_name)
s3.Object(self.bucket_name, self.key_name).put(Body=self.key_contents)
error:
...
File "/Library/Python/2.7/site-packages/botocore/vendored/requests/packages/urllib3/connectionpool.py", line 344, in _make_request
self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
File "/Library/Python/2.7/site-packages/botocore/vendored/requests/packages/urllib3/connectionpool.py", line 314, in _raise_timeout
if 'timed out' in str(err) or 'did not complete (read)' in str(err): # Python 2.6
TypeError: __str__ returned non-string (type WantWriteError)
botocore.hooks: DEBUG: Event needs-retry.s3.CreateBucket: calling handler <botocore.retryhandler.RetryHandler object at 0x10ce75310>
It looks like moto is not mocking out the boto3 call correctly - how do I make that work?
What worked for me is setting up the environment with boto
before running my mocked tests with boto3
.
Here's a working snippet:
import unittest
import boto
from boto.s3.key import Key
from moto import mock_s3
import boto3
class TestS3Actor(unittest.TestCase):
mock_s3 = mock_s3()
def setUp(self):
self.mock_s3.start()
self.location = "eu-west-1"
self.bucket_name = 'test_bucket_01'
self.key_name = 'stats_com/fake_fake/test.json'
self.key_contents = 'This is test data.'
s3 = boto.connect_s3()
bucket = s3.create_bucket(self.bucket_name, location=self.location)
k = Key(bucket)
k.key = self.key_name
k.set_contents_from_string(self.key_contents)
def tearDown(self):
self.mock_s3.stop()
def test_s3_boto3(self):
s3 = boto3.resource('s3', region_name=self.location)
bucket = s3.Bucket(self.bucket_name)
assert bucket.name == self.bucket_name
# retrieve already setup keys
keys = list(bucket.objects.filter(Prefix=self.key_name))
assert len(keys) == 1
assert keys[0].key == self.key_name
# update key
s3.Object(self.bucket_name, self.key_name).put(Body='new')
key = s3.Object(self.bucket_name, self.key_name).get()
assert 'new' == key['Body'].read()
When run with py.test test.py
you get the following output:
collected 1 items
test.py .
========================================================================================= 1 passed in 2.22 seconds =========================================================================================
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