Add a Static Pages controller

.gitignore

@@ -38,3 +38,6 @@
 /yarn-error.log
 yarn-debug.log*
 .yarn-integrity
+
+# Ignore db test files.
+db/test.*
\ No newline at end of file

Gemfile

 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
-
+gem 'rexml', '~> 3.2', '>= 3.2.5'
 gem 'rails',                      '6.1.3.2'
 gem 'image_processing',           '1.9.3'
 gem 'mini_magick',                '4.9.5'

Gemfile.lock

@@ -212,6 +212,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.1.1)
+    rexml (3.2.5)
     ruby-progressbar (1.11.0)
     ruby-vips (2.1.2)
       ffi (~> 1.12)
@@ -295,6 +296,7 @@ DEPENDENCIES
   rack-mini-profiler (= 2.3.1)
   rails (= 6.1.3.2)
   rails-controller-testing (= 1.0.5)
+  rexml (~> 3.2, >= 3.2.5)
   sass-rails (= 6.0.0)
   selenium-webdriver (= 3.142.7)
   spring (= 2.1.1)

app/controllers/static_pages_controller.rb

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

app/views/static_pages/about.html.erb

+<h1>About</h1>
+<p>
+The <a href="https://www.railstutorial.org/"><em>Ruby on Rails
+Tutorial</em></a>, part of the
+<a href="https://www.learnenough.com/">Learn Enough</a> family of
+tutorials, is a
+<a href="https://www.railstutorial.org/book">book</a> and
+<a href="https://screencasts.railstutorial.org/">screencast series</a>
+to teach web development with
+<a href="https://rubyonrails.org/">Ruby on Rails</a>.
+This is the sample app for the tutorial.
+</p>
\ No newline at end of file

config/routes.rb

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

test/controllers/static_pages_controller_test.rb

@@ -10,4 +10,9 @@ class StaticPagesControllerTest < ActionDispatch::IntegrationTest
     get static_pages_help_url
     assert_response :success
   end
+  
+  test "should get about" do
+    get static_pages_about_url
+    assert_response :success
+  end
 end

test/test_helper.rb

 ENV['RAILS_ENV'] ||= 'test'
 require_relative "../config/environment"
 require "rails/test_help"
+require "minitest/reporters"
+Minitest::Reporters.use!
 
 class ActiveSupport::TestCase
   # Run tests in parallel with specified workers