If you already have a QUnit test page ready, you can use Tere to see the test results in all the browsers you attach to it by simply opening the "Running on" url.
npm install -g tere
The next 3 lines will appear in your terminal:
Running on:Watching files in /CurrentFolderPathMatching this RegExp /.*\.js$/i
Now you can open the "Running on" url in several browsers and see the test results in the terminal.
tere -u [ url ] -d [ path to folder ] -f [ RegExp ]
-u : Your QUnit test page url-d : Path to the folder you want to watch-f : RegExp to filter files you want to watch