/**
 * Run e2e tests with CasperJS.
 */

module.exports = function (grunt) {
  grunt.registerTask('casper', function (id) {
    var path = require('path')
    var done = this.async()
    var file = id ? id + '.js' : ''
    // let casperjs use local phantomjs
    process.env.PHANTOMJS_EXECUTABLE =
      '../../node_modules/karma-phantomjs-launcher/node_modules/.bin/phantomjs'
    grunt.util.spawn({
      cmd: '../../node_modules/.bin/casperjs',
      args: ['test', '--concise', './' + file],
      opts: {
        stdio: ['ignore', process.stdout, 'ignore'],
        cwd: path.resolve('test/e2e')
      }
    }, function (err, res) {
      if (err) grunt.fail.fatal(res.stdout || 'CasperJS test failed')
      grunt.log.writeln(res.stdout)
      done()
    })
  })
}