fix(appengine): address testing errors on helloworld, websockets, rails-cloudsql-mysql

appengine/flexible/ruby31-and-earlier/rails-cloudsql-mysql/spec/features/cats_spec.rb

@@ -19,7 +19,7 @@
   scenario "should display a list of cats" do
     visit root_path
 
-    expect(page).to have_content "Ms. Paws\t2"
-    expect(page).to have_content "Mr. Whiskers\t4"
+    expect(page).to have_content "Ms. Paws 2"
+    expect(page).to have_content "Mr. Whiskers 4"
   end
 end

appengine/rails-cloudsql-mysql/spec/features/cats_spec.rb

@@ -19,7 +19,7 @@
   scenario "should display a list of cats" do
     visit root_path
 
-    expect(page).to have_content "Ms. Paws\t2"
-    expect(page).to have_content "Mr. Whiskers\t4"
+    expect(page).to have_content "Ms. Paws 2"
+    expect(page).to have_content "Mr. Whiskers 4"
   end
 end

appengine/rails-cloudsql-mysql/spec/rails_helper.rb

@@ -13,7 +13,9 @@
 # Checks for pending migration and applies them before tests are run.
 ActiveRecord::Migration.maintain_test_schema!
 
-Capybara.current_driver = :cuprite
+Capybara.register_driver :cuprite do |app|
+  Capybara::Cuprite::Driver.new(app, browser_options: {'no-sandbox': nil})
+end
 
 RSpec.configure do |config|
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures

appengine/standard-hello_world/app.rb

@@ -14,6 +14,12 @@
 
 # [START gae_standard_quickstart]
 require "sinatra"
+# [END gae_standard_quickstart]
+configure :development do
+  set :host_authorization, { permitted_hosts: [] }
+end
+
+# [START gae_standard_quickstart]
 
 get "/" do
   "Hello world!"

appengine/websockets/app.rb

@@ -18,6 +18,12 @@
 require "sinatra"
 require "faye/websocket"
 require "thin"
+# [END gae_flex_websockets]
+
+configure :development do
+  set :host_authorization, { permitted_hosts: [] }
+end
+# [START gae_flex_websockets]
 
 Faye::WebSocket.load_adapter "thin"
 

appengine/websockets/spec/websockets_spec.rb

@@ -21,6 +21,10 @@
 
 Capybara.app = Sinatra::Application
 
+Capybara.register_driver :cuprite do |app|
+  Capybara::Cuprite::Driver.new(app, browser_options: {'no-sandbox': nil})
+end
+
 Capybara.register_server :thin do |app, port, host|
   require "rack/handler/thin"
   Rack::Handler::Thin.run(app, :Port => port, :Host => host)