Add search tests (#26703)

lib/tasks/spec.rake

@@ -9,3 +9,13 @@ if Rake::Task.task_defined?('spec:system')
 
   Rake::Task['spec:system'].enhance ['spec:enable_system_specs']
 end
+
+if Rake::Task.task_defined?('spec:search')
+  namespace :spec do
+    task :enable_search_specs do # rubocop:disable Rails/RakeEnvironment
+      ENV['RUN_SEARCH_SPECS'] = 'true'
+    end
+  end
+
+  Rake::Task['spec:search'].enhance ['spec:enable_search_specs']
+end