test-serial.js: add a test case for serialOpen/serialWrite
test-serial.js: add a test case for serialOpen/serialWrite

risebox/bonescript,beagleboard/bonescript,il9ue/bonesimulator,risebox/bonescript,beagleboard/bonescript,theoctal/octalbonescript,jadonk/bonescript,mwillbanks/octalbonescript,jadonk/bonescript,il9ue/bonesimulator