common setup for rails proyects

rails new <project_name> -d postgresql --skip-turbolinks --skip-spring -T

-d postgresql sets up the project to use PostgreSQL
--skip-turbolinks & --skip-spring creates a project that does not use turbolinks or spring
-T skips the creation of the test directory and use of Test::Unit

In the Gemfile:

Available to all environments:
- gem 'figaro' - store environment variables securely across your app (docs)
- Uncomment gem 'bcrypt', '~> 3.1.7' if you will be hosting your own user accounts with passwords (docs)
Inside of group :test:
- gem 'rspec-rails' - user rspec in place of minitest (docs)
- gem 'capybara' - act as a user navigating your site in tests (docs)
- gem 'launchy' - for running save_and_open_page (docs)
- gem 'shoulda-matchers' - easier model testing (docs)
- gem 'database_cleaner' - clean your database between tests (docs)
- gem 'factory_girl_rails' - easily generate database objects without repetitive code in tests (docs)
- gem 'simplecov', require: false - generate reports on your test coverage (docs)
inside of group :production:
- gem 'rails_12factor', group: :production - If publishing on Heroku (docs)

Bundle and install (bundle exec or rails g) where required, create additional required files

bundle
rails g rspec:install
bundle exec figaro install
mkdir spec/support
touch spec/support/factory_girl.rb
touch spec/support/factories.rb
touch spec/support/database_cleaner.rb

Add config data

In spec/rails_helper.rb

require 'capybara/rails'

Shoulda::Matchers.configure do |config|
  config.integrate do |with|
    with.test_framework :rspec
    with.library :rails
  end
end

Uncomment Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }
Change config.use_transactional_fixtures = true to ... = false

In spec/support/factory_girl.rb

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

In spec/support/factories.rb

FactoryGirl.define do
  <factories for each model go here>
end

In spec/spec_helper.rb
- Note: this must appear at the very top of this file
```
require 'simplecov'
SimpleCov.start 'rails'
```

In spec/support/database_cleaner.rb

RSpec.configure do |config|

  config.before(:suite) do
    DatabaseCleaner.clean_with(:truncation)
  end

  config.before(:each) do
    DatabaseCleaner.strategy = :transaction
  end

  config.before(:each, :js => true) do
    DatabaseCleaner.strategy = :truncation
  end

  config.before(:each) do
    DatabaseCleaner.start
  end

  config.after(:each) do
    DatabaseCleaner.clean
  end
  
  # Optional for formatting output of test suite runs (see comments)
  config.formatter = :documentation

end

In .gitignore
```
# Ignore SimpleCov files
coverage
```

(Optional) If working with an external API:

In Gemfile
- Available to all environments
  - gem 'faraday' - for making http requests (docs)
- under group :test
  - gem 'vcr' - for stubbing (docs)
  - gem 'webmock' - for mocking (used by VCR) (docs)
bundle

In spec/rails_helper.rb

require 'vcr'

VCR.configure do |config|
  config.cassette_library_dir = "spec/vcr_cassettes"
  config.hook_into :webmock
end

In .gitignore

# Ignore vcr cassettes
/spec/vcr_cassettes

(Optional) If you will be using feature tests that utilize JavaScript:

In Gemfile
- under group :test
```
gem 'selenium-webdriver`
```
note: Firefox 46 is required for Selenium

(Optional) If you will be using ES6 syntax:

In 'Gemfile'
- available to all environments:
  - gem 'sprockets', '>= 3.0.0'
  - gem 'sprockets-es6' - Enable use of ES6 syntax in production (useful if pushing to Heroku) (docs)
- In application.rb:
  - require 'sprockets/es6'
- Any JS files that use ES6 syntax will need to be saved as .es6

pablodgcatulo/common_setup_for_rails_proyects.md