Ruby 2.1.2 + Rails 4.0.2 開発メモ

Rspec 3.1

have(n) 利用時には rspec-collection_matchers が必用

• rspec/rspec-collection_matchers
• Notable Changes in RSpec 3

group :test do
    gem "rspec"
    gem "rspec-rails"
    gem 'rspec-collection_matchers'
end

$ rails g rspec:model model_name

customer_spec.rb

# coding: utf-8
require 'rails_helper'

RSpec.describe Customer, :type => :model do
    it "is invalid without password" do
        expect(Customer.new(email: nil)).to have(1).errors_on(:email)
    end
end

テスト用DBの準備

• developmentの内容をtestに移す

$ rake db:migrate
$ rake db:test:prepare

Factoryを利用する

spec/models/model_spec.rb

RSpec.describe Model, :type => :model do
    it "is invalid without email" do
        expect(build(:invalid_attr)).to have(1).errors_on(:email)
    end

end

guard-spec によるテスト自動化

• Guardによるテストの自動化

group :test do
    ...
    gem 'guard-rspec'
end

$ guard init rspec
$ guard

Spork によるテスト高速化

• Spork を使ったテストの高速化

annotate_models によるスキーマ可視化

• ctran/annotate_models

group :development do
    ...
    gem 'annotate'
end

$ cd /path/to/app
$ annotate

• スキーマの情報がモデルに追加される

app/models/model.rb

# == Schema Information
#
# Table name: members
#
#  id         :integer          not null, primary key
...

FactoryGirl

導入

group :test do
    ...
    gem 'factory_girl_rails'
end

• Factory Girl: uninitialized constant

spec/spec_helper.rb

# これがないとrspec実行時にuninitialized constant FactoryGirlのエラー
require 'factory_girl_rails'

RSpec.configure do |config|
    ...
    config.include FactoryGirl::Syntax::Methods
end

Factoryを定義

spec/factories/model.rb

# coding: utf-8
FactoryGirl.define do
    factory :invalid_email, class: Model do
        email nil
    end
end

i18nのdeprecated警告を解消

• Rails 4.0.2から以下の警告が発生
• rspec実行時でも発生

[deprecated] I18n.enforce_available_locales will default to true in the future. If you really want to skip validation of your locale you can set I18n.enforce_available_locales = false to avoid this message.

• Rails 4.0.2のi18nで出るようになったdeprecated警告の対策方法

config/application.rb

module YourApplication
    class Application < Rails::Application
        ...
        I18n.enforce_available_locales = false
    end
end