Use Gulp to automatically run PHPUnit tests.

gulpfile.js

var gulp = require('gulp'),  
    sys = require('sys'),
    exec = require('child_process').exec;

gulp.task('phpunit', function() {
    exec('phpunit', function(error, stdout) {
        sys.puts(stdout); 
    });
}); 

gulp.task('default', function() {
    gulp.watch('**/*.php', { debounceDelay: 2000 }, ['phpunit']);   
});

I love this! The only thing it's missing is the ability to run the test on the current edited file only. Any thoughts on this?

Gulp..means "zipper" in Dutch. FYI! Keep the party alive!

To run only on saved file: http://laravel-tricks.com/tricks/use-gulp-gulpjscom-to-run-phpunit-tests-on-saved-file