espower-coffee を使ってコード生成を経ずに (gulp-espower を使わずに) CoffeeScript + power-assert を使うデモ (npm test でも gulp test でも動きます)

gulpfile.js

var gulp = require('gulp');
var mocha = require('gulp-mocha');

gulp.task('test', function () {
    require('espower-coffee/guess');
    return gulp
        .src('test/**/*.coffee')
        .pipe(mocha());
});

package.json

{
  "name": "espower-coffee-demo",
  "private": true,
  "version": "1.0.0",
  "description": "espower-coffee Demo",
  "scripts": {
    "test": "mocha --require espower-coffee/guess test/**/*.coffee"
  },
  "author": "Takuto Wada <[email protected]>",
  "license": "MIT",
  "devDependencies": {
    "coffee-script": "^1.8.0",
    "espower-coffee": "^0.10.0",
    "gulp": "^3.8.10",
    "gulp-mocha": "^2.0.0",
    "mocha": "^2.0.1",
    "power-assert": "^0.10.0"
  }
}

various_types_test.coffee

# このファイルは test ディレクトリに置いてください

assert = require 'power-assert'

class Person
  constructor: (name, age) ->
    @name = name
    @age = age

describe "Coffee various types", ->
  beforeEach ->
    @types = [
      "string"
      98.6
      true
      false
      null
      `undefined`
      [
        "nested"
        "array"
      ]
      {
        object: true
      }
      NaN
      Infinity
      /^not/
      new Person("alice", 3)
    ]

  it "demo", ->
    index = @types.length - 1
    bob = new Person("bob", 5)
    assert @types[index].name is bob.name

various_types_test.coffee は test ディレクトリを作成してそこに入れてください。そうすればあとは npm install するだけで無設定で変換できます。 test ディレクトリ以外に置く場合には明示的に設定を書く必要があります。