https://github.com/rack/rack-test/issues/323

From b1084c1f7b04f6bdaad73c9d1ffc1b279af55e78 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@jeremyevans.net>
Date: Wed, 28 Sep 2022 18:33:43 -0700
Subject: [PATCH] Make the UploadedFile GC finalizer test more reliable on
 CRuby

---
 spec/rack/test/uploaded_file_spec.rb | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/spec/rack/test/uploaded_file_spec.rb b/spec/rack/test/uploaded_file_spec.rb
index 2cb56ac..67bfbc5 100644
--- a/spec/rack/test/uploaded_file_spec.rb
+++ b/spec/rack/test/uploaded_file_spec.rb
@@ -69,8 +69,10 @@ def file_path
         System.gc
       end
     else
-      c.new(file_path)
-      GC.start
+      50.times do |_i|
+        c.new(file_path)
+        GC.start
+      end
     end
 
     # Due to CRuby's conservative garbage collection, you can never guarantee