First draft of example single file roda app

.gitignore

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+/.rake_tasks~
+/temp.db
+/vendor/
+/bin/

Gemfile

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+source "https://rubygems.org"
+
+gem "roda"
+
+# change to gunicorn or passenger if you prefer:
+gem "puma"
+
+group :development, :test do
+  gem "rerun"
+end
+
+group :test do
+  gem 'capybara'
+  gem 'minitest'
+end

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
+    capybara (3.40.0)
+      addressable
+      matrix
+      mini_mime (>= 0.1.3)
+      nokogiri (~> 1.11)
+      rack (>= 1.6.0)
+      rack-test (>= 0.6.3)
+      regexp_parser (>= 1.5, < 3.0)
+      xpath (~> 3.2)
+    ffi (1.17.2)
+    ffi (1.17.2-arm64-darwin)
+    ffi (1.17.2-x86_64-darwin)
+    listen (3.9.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    matrix (0.4.3)
+    mini_mime (1.1.5)
+    mini_portile2 (2.8.9)
+    minitest (5.25.5)
+    nio4r (2.7.4)
+    nokogiri (1.18.8)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    nokogiri (1.18.8-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.18.8-x86_64-darwin)
+      racc (~> 1.4)
+    public_suffix (6.0.2)
+    puma (6.6.0)
+      nio4r (~> 2.0)
+    racc (1.8.1)
+    rack (3.1.16)
+    rack-test (2.2.0)
+      rack (>= 1.3)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.11.1)
+      ffi (~> 1.0)
+    regexp_parser (2.10.0)
+    rerun (0.14.0)
+      listen (~> 3.0)
+    roda (3.93.0)
+      rack
+    xpath (3.2.0)
+      nokogiri (~> 1.8)
+
+PLATFORMS
+  arm64-darwin
+  ruby
+  x86_64-darwin
+  x86_64-linux
+
+DEPENDENCIES
+  capybara
+  minitest
+  puma
+  rerun
+  roda
+
+BUNDLED WITH
+   2.6.9

README.md

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-# roda-step1-single-file-ish
+# Roda step 1 - Single File app (sort of)
 
-Example single file Roda web app. There are extra files for launching the server, running tests, the license, etc, but the app itself is all in app.rb.
+Example single file Roda web app. There are extra files for launching the server, running tests, the license, etc, but the app itself is all in app.rb.

app.rb

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+require "roda"
+
+class App < Roda
+  route do |r|
+
+    r.on do
+      "Hello World!"
+    end
+
+  end
+end

config.ru

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+require "./app"
+
+run App.freeze.app

myapp.service

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+[Unit]
+Description=My roda template
+After=network.target
+
+[Service]
+User=myapp
+Group=myapp
+WorkingDirectory=/opt/myapp
+Environment=RACK_ENV=production
+
+ExecStart=/usr/bin/puma
+TimeoutStopSec=300
+KillMode=mixed
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target

test_app.rb

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+require 'minitest/autorun'
+require 'capybara/minitest'
+
+require_relative 'app'
+
+Capybara.app = App
+
+class  AppTest < Minitest::Test
+  include Capybara::DSL
+  include Capybara::Minitest::Assertions
+
+  def teardown
+    Capybara.reset_sessions!
+    Capybara.use_default_driver
+  end
+
+  # always passes, just to make sure tests are running
+  def test_the_truth
+    assert true
+  end
+
+  def test_home_page_exists
+    visit '/'
+    assert_equal 200, page.status_code
+  end
+end