kocha/src/reporters/json-stream.js

Modern, simpler Mocha clone, no globals, lint friendly

var Base = require('./base')
var JSON = require('json3')

/**
 * Expose `List`.
 */

exports = module.exports = List

/**
 * Initialize a new `List` test reporter.
 *
 * @api public
 * @param {Runner} runner
 */
function List (runner) {
  Base.call(this, runner)

  var self = this
  var total = runner.total

  runner.on('start', function () {
    console.log(JSON.stringify(['start', { total: total }]))
  })

  runner.on('pass', function (test) {
    console.log(JSON.stringify(['pass', clean(test)]))
  })

  runner.on('fail', function (test, err) {
    test = clean(test)
    test.err = err.message
    test.stack = err.stack || null
    console.log(JSON.stringify(['fail', test]))
  })

  runner.on('end', function () {
    process.stdout.write(JSON.stringify(['end', self.stats]))
  })
}

/**
 * Return a plain-object representation of `test`
 * free of cyclic properties etc.
 *
 * @api private
 * @param {Object} test
 * @return {Object}
 */
function clean (test) {
  return {
    title: test.title,
    fullTitle: test.fullTitle(),
    duration: test.duration,
    currentRetry: test.currentRetry()
  }
}