DEV: Restore RSpec 'documentation' output, but collapse in CI (#26485)

This reverts commit ef895f1c32ad406a37a10137eab38d75bc82bd38 and 57df0d526e2d131d80c878edee27c8b3a0fccfe4, but adds GitHub actions line grouping to the verbose output to reduce scrolling.

lib/turbo_tests/documentation_formatter.rb

@@ -3,7 +3,22 @@
 module TurboTests
   # An RSpec formatter that prepends the process id to all messages
   class DocumentationFormatter < ::TurboTests::BaseFormatter
-    RSpec::Core::Formatters.register(self, :example_failed, :example_passed, :example_pending)
+    RSpec::Core::Formatters.register(
+      self,
+      :example_failed,
+      :example_passed,
+      :example_pending,
+      :start,
+      :stop,
+    )
+
+    def start(*args)
+      output.puts "::group:: Verbose turbo_spec output" if ENV["GITHUB_ACTIONS"]
+    end
+
+    def stop(*args)
+      output.puts "::endgroup::" if ENV["GITHUB_ACTIONS"]
+    end
 
     def example_passed(notification)
       output.puts RSpec::Core::Formatters::ConsoleCodes.wrap(

lib/turbo_tests/reporter.rb

@@ -48,6 +48,10 @@ module TurboTests
       end
     end
 
+    def start
+      delegate_to_formatters(:start, RSpec::Core::Notifications::NullNotification)
+    end
+
     def example_passed(example)
       delegate_to_formatters(:example_passed, example.notification)
 
@@ -83,6 +87,8 @@ module TurboTests
     def finish
       end_time = Time.now
 
+      delegate_to_formatters(:stop, RSpec::Core::Notifications::NullNotification)
+
       delegate_to_formatters(:start_dump, RSpec::Core::Notifications::NullNotification)
 
       delegate_to_formatters(

lib/turbo_tests/runner.rb

@@ -89,6 +89,8 @@ module TurboTests
         start_regular_subprocess(tests, process_id + 1, **subprocess_opts)
       end
 
+      @reporter.start
+
       handle_messages
 
       @reporter.finish