tests: various fixes (#1577)

Author: dazuma

appengine/endpoints/spec/endpoint_sample_spec.rb

@@ -67,7 +67,7 @@
     error = JSON.parse last_response.body
 
     expect(error["error"]).to eq 500
-    expect(error["message"]).to include "unexpected token"
+    expect(error["message"]).to include "unexpected "
   end
 
   it "handles Firebase Auth" do

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

@@ -19,7 +19,7 @@
 
 RSpec.configure do |config|
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
-  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+  config.fixture_paths = "#{::Rails.root}/spec/fixtures"
 
   # If you're not using ActiveRecord, or you'd prefer not to run each of your
   # examples within a transaction, remove the following line or assign false

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

@@ -17,7 +17,7 @@
 
 RSpec.configure do |config|
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
-  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+  config.fixture_paths = "#{::Rails.root}/spec/fixtures"
 
   # If you're not using ActiveRecord, or you'd prefer not to run each of your
   # examples within a transaction, remove the following line or assign false

appengine/websockets/Gemfile

@@ -4,6 +4,7 @@ source "https://rubygems.org"
 gem "faye-websocket"
 gem "sinatra"
 
+gem "rackup"
 gem "thin"
 # [END gae_flex_websocket_dependencies]
 

appengine/websockets/spec/websockets_spec.rb

@@ -26,8 +26,8 @@
 end
 
 Capybara.register_server :thin do |app, port, host|
-  require "rack/handler/thin"
-  Rack::Handler::Thin.run(app, :Port => port, :Host => host)
+  require "rackup/handler/thin"
+  Rackup::Handler::Thin.run(app, :Port => port, :Host => host)
 end
 
 Capybara.server = :thin