s3auth.com is a Basic HTTP Auth gateway in front of your private Amazon S3 bucket.
Point your test.example.com CNAME to relay.s3auth.com,
and register the domain in s3auth.com web panel.
You will be able to access bucket's content in a browser with an HTTP basic auth.
Your bucket will be accessible using your Amazon IAM credentials
and with custom user/password pairs in your .htpasswd file
(similar to Apache HTTP Server).
For example, try http://maven.s3auth.com/
(with username s3auth and password s3auth).
You will access content of Amazon S3 bucket maven.s3auth.com,
which is not readable anonymously otherwise.
Continuous integration environment is here: http://www.rultor/s/s3auth
