PHP Unit with Grunt

Gruntfile.coffee

terminal = require('color-terminal')

log = (error, stdout, stderr, cb) ->
    if error
        terminal.color('red').write stdout
    else
        terminal.color('green').write stdout

    cb()

module.exports = (grunt) ->
    grunt.loadNpmTasks 'grunt-contrib-watch'
    grunt.loadNpmTasks 'grunt-shell'

    grunt.initConfig
        testFilepath: null

        watch:
            php:
                options:
                    event: 'changed'
                    spawn: false
                files: [
                    'foo/bar/**/*.php'
                    'foo/bar/**/*Test.php'
                ]
                tasks: 'shell:phpunit'

        shell:
            phpunit:
                options:
                    callback: log
                command: 'echo <%= testFilepath %> && phpunit -c app <%= testFilepath %>'

    grunt.event.on 'watch', (action, filepath, ext) ->
        regex = new RegExp("foo/bar/([a-z0-9]+)/([a-z0-9/]+)", "i")

        if filepath.match regex
            if filepath.indexOf('Test') is -1
                testFilepath = filepath.replace regex, "foo/bar/$1/Tests/$2Test"
            else
                testFilepath = filepath

            grunt.config 'testFilepath', testFilepath