Please recommend me some rails/ruby open source code that needs documentation/tests written [closed]

Kudos! There are several ways to participate.

I think the question to ask yourself is, what are your areas of expertise? What subject area to you have a solid knowledge of? For example, if you had experience with Web Services, the Savon project is in dire need of documentation, examples, etc. If you have Java experience, there are many burgeoning JRuby projects that could use a hand.

You can check the Ruby Toolbox, which lists gems in categories by popularity. Look in the areas that appeal to you and check out the popular gems. The vast majority of gems have github repositories. If you haven't learned git, I highly recommend it. It's super easy to branch a project, update it. Look for projects which have a good test suite, which will not only help you figure out how it works, but will give you good examples for testing your additions/fixes.

Also, the Ruby and Rails documentation at APIdock allows for comments. If you come across something that's not entirely clear in the Rails documentation, for example, you can add a clarifying comment or examples.

You are doing a great thing for the Rails community. +1 to you!

I'm also new to rails. I can tell you I had a difficult time learning the ins and outs of aweseome_nested_set because of no examples. The readme lacked any real use case examples such as building an entire tree, outputting the first and second level only, etc.

Although it could be that I am new and was not around for acts_as_nested_set to learn the fundamentals of that plugin (which awesome_nested_set is built on, I believe)