前提 Gemfile group :development, :test do ... gem 'rspec-rails', '~> 4.0.2' gem 'factory_bot_rails' end schema.rb create_table "tasks", force: :cascade do |t| t.string "title" t.text "content" t.integer "status" t.datetime "deadline" t.datetime "created_at", null: false t.datetime "updated_at", null: …