Merge pull request #29561 from samphippen/samphippen/add-option-to-silence-puma-in-system-test

Add an option to silence puma in system tests.

actionpack/lib/action_dispatch/system_testing/server.rb

@@ -3,6 +3,12 @@
 module ActionDispatch
   module SystemTesting
     class Server # :nodoc:
+      class << self
+        attr_accessor :silence_puma
+      end
+
+      self.silence_puma = false
+
       def run
         register
         setup
@@ -11,7 +17,12 @@ def run
       private
         def register
           Capybara.register_server :rails_puma do |app, port, host|
-            Rack::Handler::Puma.run(app, Port: port, Threads: "0:1")
+            Rack::Handler::Puma.run(
+              app,
+              Port: port,
+              Threads: "0:1",
+              Silent: self.class.silence_puma
+            )
           end
         end