Add test suite for back-end app

Gemfile

@@ -38,6 +38,7 @@ end
 group :test do
   gem 'minitest'
   gem 'rr', require: false
+  gem 'rack-test', require: false
 end
 
 if ENV['SELENIUM'] == '1'

Gemfile.lock

@@ -104,6 +104,7 @@ DEPENDENCIES
   progress_bar
   pry (~> 0.9.12)
   rack
+  rack-test
   rr
   sass
   sinatra

lib/app.rb

@@ -40,12 +40,14 @@ class App < Sinatra::Application
     end
   end
 
-  configure :development do
-    register Sinatra::Reloader
-
+  configure :test, :development do
     require 'active_support/per_thread_registry'
     require 'active_support/cache'
     sprockets.cache = ActiveSupport::Cache.lookup_store :file_store, root.join('tmp', 'cache', 'assets')
+  end
+
+  configure :development do
+    register Sinatra::Reloader
 
     use BetterErrors::Middleware
     BetterErrors.application_root = File.expand_path('..', __FILE__)

test/app_test.rb

@@ -0,0 +1,175 @@
+require 'test_helper'
+require 'rack/test'
+require 'app'
+
+class AppTest < MiniTest::Spec
+  include Rack::Test::Methods
+
+  def app
+    App
+  end
+
+  describe "/" do
+    it "works" do
+      get '/'
+      assert last_response.ok?
+    end
+
+    it "redirects without the query string" do
+      get '/', foo: 'bar'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/', last_response['Location']
+    end
+  end
+
+  describe "/[static-page]" do
+    it "redirects to /#/[static-page]" do
+      %w(offline about news help).each do |page|
+        get "/#{page}"
+        assert last_response.redirect?
+        assert_equal "http://example.org/#/#{page}", last_response['Location']
+      end
+    end
+  end
+
+  describe "/search" do
+    it "redirects to /#q=" do
+      get '/search'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/#q=', last_response['Location']
+
+      get '/search', q: 'foo'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/#q=foo', last_response['Location']
+    end
+  end
+
+  describe "/manifest.appcache" do
+    it "works" do
+      get '/manifest.appcache'
+      assert last_response.ok?
+    end
+
+    it "works with cookie" do
+      set_cookie('docs=css/html')
+      get '/manifest.appcache'
+      assert last_response.ok?
+      assert_includes last_response.body, '/css/index.json'
+      assert_includes last_response.body, '/html/index.json'
+    end
+  end
+
+  describe "/[doc]" do
+    it "works when the doc exists" do
+      get '/html/'
+      assert last_response.ok?
+    end
+
+    it "returns 404 when the doc doesn't exist" do
+      get '/foo/'
+      assert last_response.not_found?
+    end
+
+    it "redirects with trailing slash" do
+      get '/html'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/html/', last_response['Location']
+
+      get '/html', bar: 'baz'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/html/?bar=baz', last_response['Location']
+    end
+  end
+
+  describe "/[doc]-[type]" do
+    it "works when the doc exists" do
+      get '/html-foo-bar_42/'
+      assert last_response.ok?
+    end
+
+    it "returns 404 when the type is blank" do
+      get '/html-/'
+      assert last_response.not_found?
+    end
+
+    it "returns 404 when the type is not alpha-numeric" do
+      get '/html-foo:bar/'
+      assert last_response.not_found?
+    end
+
+    it "returns 404 when the doc doesn't exist" do
+      get '/foo-bar/'
+      assert last_response.not_found?
+    end
+
+    it "redirects with trailing slash" do
+      get '/html-foo'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/html-foo/', last_response['Location']
+
+      get '/html-foo', bar: 'baz'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/html-foo/?bar=baz', last_response['Location']
+    end
+  end
+
+  describe "/[doc+type]/[path]" do
+    it "works when the doc exists" do
+      get '/html/foo'
+      assert last_response.ok?
+
+      get '/html-bar/foo'
+      assert last_response.ok?
+    end
+
+    it "returns 404 when the doc doesn't exist" do
+      get '/foo/bar'
+      assert last_response.not_found?
+    end
+
+    it "redirects without trailing slash" do
+      get '/html/foo/'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/html/foo', last_response['Location']
+
+      get '/html/foo/', bar: 'baz'
+      assert last_response.redirect?
+      assert_equal 'http://example.org/html/foo?bar=baz', last_response['Location']
+    end
+  end
+
+  describe "/feed" do
+    it "returns an atom feed" do
+      get '/feed'
+      assert last_response.ok?
+      assert_equal 'application/atom+xml', last_response['Content-Type']
+
+      get '/feed.atom'
+      assert last_response.ok?
+      assert_equal 'application/atom+xml', last_response['Content-Type']
+    end
+  end
+
+  describe "/s/[link]" do
+    it "redirects" do
+      %w(maxcdn shopify tw fb re).each do |link|
+        get "/s/#{link}"
+        assert last_response.redirect?
+      end
+    end
+  end
+
+  describe "/ping" do
+    it "works" do
+      get '/ping'
+      assert last_response.ok?
+    end
+  end
+
+  describe "404" do
+    it "works" do
+      get '/foo'
+      assert last_response.not_found?
+    end
+  end
+end