If the userbackend doesn't allow validating the password for a given uid then there is no need to perform this check. Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>
Add tests Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>