This is perfectly possible. +-12 years ago I took a course on concepts of programming languages. The exam consisted out of programming exercises in a classroom

This is perfectly possible. +-12 years ago I took a course on concepts of programming languages. The exam consisted out of programming exercises in a classroom without internet access. Grading was based on the number of (hidden) unit tests that succeeded. https://eelcovisser.org/blog/teaching/2014/02/05/programming-education-in-the-browser-with-weblab/ https://eelcovisser.org/blog/teaching/2014/02/05/programming...