Automated testing is a very useful feature that is simple to implement in any open source project. It allows the testing to be automated to ensure that nothing will break when things are changed. In the open source world, code is changed quite often so having automated testing can make it easy to track and manage errors and we can know if the code is properly written to pass the tests. Overall, it is very beneficial in open source programming. Travis CI makes it very easy to link your Github page and the repos on it. It is very easy to get started and I would recommend it to everyone! I always used to do my testing by outputting the results and comparing it with whatever I had in my head, now, it does it all on it's own.