Add usage comments to systemd unit file.

app.rb

@@ -1,10 +1,15 @@
+# frozen_string_literal: true
 require "roda"
 
 class App < Roda
   route do |r|
 
-    r.on do
-      "Hello World!"
+    r.root do
+      "My Homepage"
+    end
+
+    r.get 'about' do
+      "About This Site"
     end
 
   end

myapp.service

@@ -8,10 +8,15 @@ Group=myapp
 WorkingDirectory=/opt/myapp
 Environment=RACK_ENV=production
 
-ExecStart=/usr/bin/puma
+ExecStart=/opt/myapp/bin/puma
 TimeoutStopSec=300
 KillMode=mixed
 Restart=on-failure
 
 [Install]
 WantedBy=multi-user.target
+
+# Can copy this unit file into /etc/systemd/system/
+# then edit for your installation details (user, group, directory, exec, app name)
+# run "sudo systemctl daemon-reload",
+# then "sudo systemctl enable --now -q myapp.service"

test_app.rb

@@ -19,8 +19,27 @@ class  AppTest < Minitest::Test
     assert true
   end
 
+  # Make sure not just responding to every path
+  def test_random_page_does_not__exist
+    visit '/skdjflksjdflkzxbjslkdjqweooiumnbvjslkdjflk'
+    refute_equal 200, page.status_code
+  end
+
   def test_home_page_exists
     visit '/'
     assert_equal 200, page.status_code
   end
+
+  # Can change the checked content as your site evolves:
+  def test_home_page_has_content
+    visit '/'
+    assert_content "My Homepage"
+  end
+
+  def test_about_page_exists_and_has_content
+    visit '/about'
+    assert_equal 200, page.status_code
+    assert_content "About This Site"
+  end
+
 end