Concept: Run smoke tests / unit tests in custom built Espruino IDE docker images with GitHub actions

Thanks!

Well, really it was a few things:

• we might want to have some data beforehand (eg to say we need to load app X as well) - but that could be in JSON in a comment at the start of JS I guess
  
• Ideally we want to be able to write a command to the emulator and wait for it to complete so we know where the test failed if it did (but I guess if we wrote the whole JS file and then ran it, exceptions would give line numbers)
  
• Writing JS to the console isn't quite the same as normal JS - writing for (var i=0;i<10;i++) and then print("Hello") on a newline will run the loop and THEN the print.
  
• If you let people write JS they'll try to be clever and it'll no longer be a set of 'do this check that' but something far more complicated
  
• I was expecting some commands of the JSON might be doing more in the test harness than just running on the device (eg saving and comparing screenshots) - but maybe we could have the emulator send out some text like COMPARE IMAGE FOOBAR.png followed by the image's base64 and then the test harness could interpret that.
  
  

But yes, potentially we could just have JS files and work around that stuff above. There's nothing in place at the moment, so if you wanted to do a PR I'm all for it.