Rails / RSpec

概要

前提条件

手順

Gemfile

Gemfile

  group :development, :test do
    # Call 'byebug' anywhere in the code to stop execution and get a debugger console
    gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
+   gem 'rspec-rails'
+   # Adds support for Capybara system testing and selenium driver
+   gem 'capybara', '>= 2.15'
+   gem 'factory_bot_rails'
  end

  group :development do
　  ︙
    gem 'spring-watcher-listen', '~> 2.0.0'
+   gem 'spring-commands-rspec'
  end

  group :test do
    # Adds support for Capybara system testing and selenium driver
-   gem 'capybara', '>= 2.15'
    gem 'selenium-webdriver'
-   # Easy installation and use of chromedriver to run system tests with Chrome
-   gem 'chromedriver-helper'
+   gem 'webdrivers'
end

chromedriver-helper を削除し webdrivers を追加する理由は、rspecコマンド実行時に 下記のWarning が出るため

2019-08-15 07:18:52 WARN Selenium [DEPRECATION] Selenium::WebDriver::Chrome#driver_path= is deprecated. Use Selenium::WebDriver::Chrome::Service#driver_path= instead.

Gem インストール

$ bundle install

RSpecインストール

$ bundle exec rails g rspec:install

RSpec 設定変更

出力形式を見やすいドキュメント形式に変更

.rspec

  --require spec_helper
+ --format documentation

rails g コマンド実行時のテストに関する設定の変更

config/application.rb

  module Myapp
    class Application < Rails::Application
      # Initialize configuration defaults for originally generated Rails version.
      config.load_defaults 5.2

      # Settings in config/environments/* take precedence over those specified here.
      # Application configuration can go into files in config/initializers
      # -- all .rb files in that directory are automatically loaded after loading
      # the framework and any gems in your application.

+     config.generators do |g|
+       g.test_framework :rspec,
+                        fixtures: true,
+                        view_specs: false,
+                        helper_specs: false,
+                        routing_specs: false,
+                        request_specs: true,
+                        system_specs: true
+     end
    end
  end

Capybaraの初期セットアップ

spec/spec_helper.rb

+ require 'capybara/rspec'
  RSpec.configure do |config|
+   config.before(:each, type: :system) do
+     driven_by :selenium_chrome_headless
+   end
　  ︙
  end

binstub 作成

$ bundle exec spring binstub rspec

動作確認

$ bundle exec bin/rspec

Running via Spring preloader in process 22
No examples found.

Finished in 0.00272 seconds (files took 0.68623 seconds to load)
0 examples, 0 failures