feat: 🎸 RSpec と FactoryBot を導入した (#10)

.rspec

@@ -0,0 +1 @@
+--require spec_helper --format documentation --force-color

Gemfile

@@ -15,3 +15,8 @@ group :development, :test do
   gem 'debug', platforms: %i[mri windows]
   gem 'rubocop-rails', require: false
 end
+
+group :test do
+  gem 'factory_bot_rails'
+  gem 'rspec-rails', require: false
+end

Gemfile.lock

@@ -86,9 +86,15 @@ GEM
     debug (1.8.0)
       irb (>= 1.5.0)
       reline (>= 0.3.1)
+    diff-lcs (1.5.0)
     drb (2.2.0)
       ruby2_keywords
     erubi (1.12.0)
+    factory_bot (6.4.2)
+      activesupport (>= 5.0.0)
+    factory_bot_rails (6.4.2)
+      factory_bot (~> 6.4)
+      railties (>= 5.0.0)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.1)
@@ -177,6 +183,23 @@ GEM
     reline (0.4.0)
       io-console (~> 0.5)
     rexml (3.2.6)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.6)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.12.0)
+    rspec-rails (6.1.0)
+      actionpack (>= 6.1)
+      activesupport (>= 6.1)
+      railties (>= 6.1)
+      rspec-core (~> 3.12)
+      rspec-expectations (~> 3.12)
+      rspec-mocks (~> 3.12)
+      rspec-support (~> 3.12)
+    rspec-support (3.12.1)
     rubocop (1.57.2)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
@@ -222,8 +245,10 @@ PLATFORMS
 
 DEPENDENCIES
   debug
+  factory_bot_rails
   puma
   rails
+  rspec-rails
   rubocop-rails
   sprockets-rails
   sqlite3

spec/rails_helper.rb

@@ -0,0 +1,67 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+require 'spec_helper'
+ENV['RAILS_ENV'] ||= 'test'
+require_relative '../config/environment'
+# Prevent database truncation if the environment is production
+abort("The Rails environment is running in production mode!") if Rails.env.production?
+require 'rspec/rails'
+# Add additional requires below this line. Rails is not loaded until this point!
+
+# Requires supporting ruby files with custom matchers and macros, etc, in
+# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
+# run as spec files by default. This means that files in spec/support that end
+# in _spec.rb will both be required and run as specs, causing the specs to be
+# run twice. It is recommended that you do not name files matching this glob to
+# end with _spec.rb. You can configure this pattern with the --pattern
+# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
+#
+# The following line is provided for convenience purposes. It has the downside
+# of increasing the boot-up time by auto-requiring all files in the support
+# directory. Alternatively, in the individual `*_spec.rb` files, manually
+# require only the support files necessary.
+#
+# Rails.root.glob('spec/support/**/*.rb').sort.each { |f| require f }
+
+# Checks for pending migrations and applies them before tests are run.
+# If you are not using ActiveRecord, you can remove these lines.
+begin
+  ActiveRecord::Migration.maintain_test_schema!
+rescue ActiveRecord::PendingMigrationError => e
+  abort e.to_s.strip
+end
+RSpec.configure do |config|
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  config.fixture_paths = [
+    Rails.root.join('spec/fixtures')
+  ]
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  config.use_transactional_fixtures = true
+
+  # You can uncomment this line to turn off ActiveRecord support entirely.
+  # config.use_active_record = false
+
+  # RSpec Rails can automatically mix in different behaviours to your tests
+  # based on their file location, for example enabling you to call `get` and
+  # `post` in specs under `spec/controllers`.
+  #
+  # You can disable this behaviour by removing the line below, and instead
+  # explicitly tag your specs with their type, e.g.:
+  #
+  #     RSpec.describe UsersController, type: :controller do
+  #       # ...
+  #     end
+  #
+  # The different available types are documented in the features, such as in
+  # https://rspec.info/features/6-0/rspec-rails
+  config.infer_spec_type_from_file_location!
+
+  # Filter lines from Rails gems in backtraces.
+  config.filter_rails_from_backtrace!
+  # arbitrary gems may also be filtered via:
+  # config.filter_gems_from_backtrace("gem name")
+
+  config.include FactoryBot::Syntax::Methods
+end

spec/spec_helper.rb

@@ -0,0 +1,12 @@
+# こちらはデフォルトのままにしておき、設定は全て rails_helper.rb に書く
+RSpec.configure do |config|
+  config.expect_with :rspec do |expectations|
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  config.mock_with :rspec do |mocks|
+    mocks.verify_partial_doubles = true
+  end
+
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+end