[RAILS] Install RSpec

Introduction

Install RSpec by referring to RSpec Kotohajime ~ Initial Setting Manual ~ and the official document.

environment

• ruby 2.6.5p114
• Rails 6.0.0

See this article for Rails installation. Building Rails environment with WSL of Windows 10

RSpec installation

See also: rspec / rspec-rails Follow the official procedure to install. First, edit the Gemfile.

Gemfile

group :development, :test do
  [abridgement]
  gem 'rspec-rails', '~> 4.0.1'
end

After editing the Gemfile, execute the following command directly under the project directory.

command

#RSpec installation
$ bundle install

#Creating a standard configuration file
$ rails generate rspec:install
Running via Spring preloader in process 266
      create  .rspec
      create  spec
      create  spec/spec_helper.rb
      create  spec/rails_helper.rb

A directory for RSpec and a configuration file have been created. From now on, RSpec will be used, so delete the / test directory for Minitest.

command

#Delete test directory
$ rm -rf test

Initial setting

Add the settings to the created .rspec file.

.rspec

--require spec_helper
--color
--format documentation

Reference: Command line --RSpec Core --RSpec --Relish

This setting eliminates the need to include require'spec_helper' in the spec file. The output result is not just a dot, but a sentence format. This completes the basic settings.

Test system Gem

For the time being, just put on the list. Fake services will be added later.

Bonus about database_cleaner

Run Rails 5.1 or later system tests with RSpec (translation) As mentioned in the referenced article, database_cleaner seems to be unnecessary after Rails 5.1. However, it seems that the rollback mechanism is implemented in System Spec instead of installing database_cleaner automatically. In the first place

spec/rails_helper.rb

RSpec.configure do |config|
  config.use_transactional_fixtures = true
end

Reference: Transactions --RSpec Rails --RSpec --Relish With the above settings, database operations performed by RSpec will be processed in a transaction and removed by rollback. The reason why database_cleaner was introduced

[Translation + α] Use database_cleaner gem with Rails / RSpec / Capybara / Selenium This is because the above settings work effectively in the RSpec process, and did not work effectively if it was a user-operated emulation (Feature Spec) using Capybara / Selenum, etc. Therefore, I want to set the DB cleanup in detail at the time of testing! You don't need database_cleaner unless you're still using the Feedback Spec instead of the System Spec.