Remove the stub_stdout wrapper around CLI specs (#28340)

lib/mastodon/cli/search.rb

@@ -42,7 +42,13 @@ module Mastodon::CLI
 
       pool      = Concurrent::FixedThreadPool.new(options[:concurrency], max_queue: options[:concurrency] * 10)
       importers = indices.index_with { |index| "Importer::#{index.name}Importer".constantize.new(batch_size: options[:batch_size], executor: pool) }
-      progress  = ProgressBar.create(total: nil, format: '%t%c/%u |%b%i| %e (%r docs/s)', autofinish: false)
+      progress  = ProgressBar.create(
+        {
+          total: nil,
+          format: '%t%c/%u |%b%i| %e (%r docs/s)',
+          autofinish: false,
+        }.merge(progress_output_options)
+      )
 
       Chewy::Stash::Specification.reset! if options[:reset_chewy]
 
@@ -116,5 +122,9 @@ module Mastodon::CLI
       say('Cannot run with this batch_size setting, must be at least 1', :red)
       exit(1)
     end
+
+    def progress_output_options
+      Rails.env.test? ? { output: ProgressBar::Outputs::Null } : {}
+    end
   end
 end