A few months ago I made a gem to manage, run, and test project euler problems.

https://github.com/yaworsw/euler-manager

It looks like you check against static answers [1]. This won't work in the long run because, as far as I'm aware, PE changes the numbers in their problems to prevent cheating. Which means the answers you have would be outdated.

1: https://github.com/yaworsw/euler-manager/blob/master/data/an...

Did this pretty quickly: http://project-euler-solution.herokuapp.com/

Give it a shot? Don't have answers to all questions.