Add a Static Pages controller

app/assets/stylesheets/static_pages.scss

+// Place all the styles related to the StaticPages controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: https://sass-lang.com/

app/controllers/static_pages_controller.rb

+class StaticPagesController < ApplicationController
+  def home
+  end
+
+  def help
+  end
+end

app/helpers/static_pages_helper.rb

+module StaticPagesHelper
+end

app/views/static_pages/help.html.erb

+<h1>StaticPages#help</h1>
+<p>Find me in app/views/static_pages/help.html.erb</p>

app/views/static_pages/home.html.erb

+<h1>StaticPages#home</h1>
+<p>Find me in app/views/static_pages/home.html.erb</p>

config/routes.rb

 Rails.application.routes.draw do
 Rails.application.routes.draw do
+  get 'static_pages/home'
+  get 'static_pages/help'
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
   root 'application#hello'
   root 'application#hello'
 end
 end

test/controllers/static_pages_controller_test.rb

+require "test_helper"
+
+class StaticPagesControllerTest < ActionDispatch::IntegrationTest
+  test "should get home" do
+    get static_pages_home_url
+    assert_response :success
+  end
+
+  test "should get help" do
+    get static_pages_help_url
+    assert_response :success
+  end
+end