Guard is one of my favourite Ruby tools, especially when working on Rails projects.
One of the most helpful features of Guard is the display of notifications to indicate a test’s success (or failure). There are a few different types available, but I find the popup ones to be a little annoying after a while.
However, Guard comes with an Emacs notifier that changes the colour of the modeline depending on the result of the latest test. This makes getting feedback from tests extremely quick, and also means I don’t have to leave the editor.
Adding the following to
.guard.rb in your home directory will enable the Emacs notifier on the local machine.
The default colours didn’t work so well for my current theme (aurora), but thankfully Guard supports configuring colours:
notification :emacs, fontcolor: '#263238', default: '#546d7a', success: '#396c00', failed: '#640900', pending: '#776600'
Alternatively these can go in a
Guardfile, but I prefer to leave notification settings up to individuals.