Automating Computer Program Grading

Hi folks,

I'm looking for a system where:

1. Students can submit their programs.
2. I can create a set of tests of those programs.
3. I can click a button and run those tests on every student program.
4. I can get an easy to read display of which tests the program passed, and which it didn't.

Thank you again for your help.

Python Tutor
http://pythontutor.com/
Allows user to visualize execution of code step by step, with the option to create test cases

Maybe try this out? http://web-cat.org/

EDIT: If you end up using GitHub Classroom, this tool will be useful too since it integrates with GitHub: https://docs.travis-ci.com/. It's a continuous integration tool so I assume it can run automated tests though I haven't used it for anything beyond verifying that there aren't any syntactical errors in code.