https://git.ruby-lang.org/ruby.git/commit/?id=94b54b038c

From 94b54b038c1f4d6d2b54e10dd0305b1bc283449b Mon Sep 17 00:00:00 2001
From: Marc-Andre Lafortune <github@m...>
Date: Tue, 1 Sep 2020 20:26:45 -0400
Subject: Reapply "Special case Range#max for integer beginning and
 Float::Infinity end" (tests)

Reverted in e080a4cdee

diff --git a/test/ruby/test_range.rb b/test/ruby/test_range.rb
index 07a0928..9c8bbaf 100644
--- a/test/ruby/test_range.rb
+++ b/test/ruby/test_range.rb
@@ -129,6 +129,9 @@ class TestRange < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_range.rb#L129
     assert_equal(2, (..2).max)
     assert_raise(TypeError) { (...2).max }
     assert_raise(TypeError) { (...2.0).max }
+
+    assert_equal(Float::INFINITY, (1..Float::INFINITY).max)
+    assert_nil((1..-Float::INFINITY).max)
   end
 
   def test_minmax
@@ -153,6 +156,9 @@ class TestRange < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_range.rb#L156
 
     assert_equal(['a', 'c'], ('a'..'c').minmax)
     assert_equal(['a', 'b'], ('a'...'c').minmax)
+
+    assert_equal([1, Float::INFINITY], (1..Float::INFINITY).minmax)
+    assert_equal([nil, nil], (1..-Float::INFINITY).minmax)
   end
 
   def test_initialize_twice
-- 
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