Testing of API and microservices projects

Are there automated tests for checking the correctness and completeness of these projects? And if so, how can I run them? The project pages say the following:

Working on this project will involve you writing your code on Glitch on our starter project. After completing this project you can copy your public glitch url (to the homepage of your app) into this screen to test it! Optionally you may choose to write your project on another platform but it must be publicly visible for our testing.

However, when submitting projects, no tests are run and the completion screen shows instantly. I even intentionally flubbed the URL to one of my project submissions and it went through no problem. So what’s the status of project testing?