https://git.ruby-lang.org/ruby.git/commit/?id=cec61d16d2

From cec61d16d2fb50812a003338a719f186a6bd88ef Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sun, 10 Oct 2021 19:23:52 +0900
Subject: Run JIT tests first when random order instead of no-sort

---
 tool/lib/test/unit.rb | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/tool/lib/test/unit.rb b/tool/lib/test/unit.rb
index 9671df1ad4..15e290e5f1 100644
--- a/tool/lib/test/unit.rb
+++ b/tool/lib/test/unit.rb
@@ -69,6 +69,12 @@ module Test https://github.com/ruby/ruby/blob/trunk/tool/lib/test/unit.rb#L69
 
         alias sort_by_string sort_by_name
 
+        def group(list)
+          list
+        end
+      end
+
+      module JITFirst
         def group(list)
           # JIT first
           jit, others = list.partition {|e| /test_jit/ =~ e}
@@ -77,6 +83,8 @@ module Test https://github.com/ruby/ruby/blob/trunk/tool/lib/test/unit.rb#L83
       end
 
       class Alpha < NoSort
+        include JITFirst
+
         def sort_by_name(list)
           list.sort_by(&:name)
         end
@@ -89,6 +97,8 @@ module Test https://github.com/ruby/ruby/blob/trunk/tool/lib/test/unit.rb#L97
 
       # shuffle test suites based on CRC32 of their names
       Shuffle = Struct.new(:seed, :salt) do
+        include JITFirst
+
         def initialize(seed)
           self.class::CRC_TBL ||= (0..255).map {|i|
             (0..7).inject(i) {|c,| (c & 1 == 1) ? (0xEDB88320 ^ (c >> 1)) : (c >> 1) }
@@ -106,10 +116,6 @@ module Test https://github.com/ruby/ruby/blob/trunk/tool/lib/test/unit.rb#L116
           list.sort_by {|e| randomize_key(e)}
         end
 
-        def group(list)
-          list
-        end
-
         private
 
         def crc32(str, crc32 = 0xffffffff)
-- 
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