https://git.ruby-lang.org/ruby.git/commit/?id=afea8db8c7

From afea8db8c7a6bca9042002dd305d45494eb2656f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 24 Jul 2019 01:42:05 +0900
Subject: Test invalid offset warnings


diff --git a/test/date/test_date_strftime.rb b/test/date/test_date_strftime.rb
index dc237a9..f82874d 100644
--- a/test/date/test_date_strftime.rb
+++ b/test/date/test_date_strftime.rb
@@ -186,13 +186,16 @@ class TestDateStrftime < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/date/test_date_strftime.rb#L186
     (-24..24).collect{|x| '%+.2d' % x}.each do |hh|
       %w(00 30).each do |mm|
 	r = hh + mm
-	if r[-4,4] == '2430'
-	  r = '+0000'
-	end
+	next if r.end_with?('2430')
 	d = DateTime.parse(s + hh + mm)
 	assert_equal(r, d.strftime('%z'))
       end
     end
+    %w[+2430 -2430].each do |r|
+      assert_warning(/invalid offset/) do
+        DateTime.parse(s + r)
+      end
+    end
   end
 
   def test_strftime_milli
-- 
cgit v0.10.2


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