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.

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