From 1701ddea73cf482289361c7559ad42e2694f65f1 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 7 Nov 2024 19:33:41 +0900
Subject: [Bug #20802] Copy encodings at reopen as well

---
 test/ruby/test_io.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index a623fd1d15..5d4ede1e4f 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2655,6 +2655,17 @@ class TestIO < Test::Unit::TestCase
     }
   end
 
+  def test_reopen_binmode
+    f1 = File.open(__FILE__)
+    f2 = File.open(__FILE__)
+    f1.binmode
+    f1.reopen(f2)
+    assert_not_operator(f1, :binmode?)
+  ensure
+    f2.close
+    f1.close
+  end
+
   def make_tempfile_for_encoding
     t = make_tempfile
     open(t.path, "rb+:utf-8") {|f| f.puts "\u7d05\u7389bar\n"}
@@ -2685,6 +2696,16 @@ class TestIO < Test::Unit::TestCase
     }
   end
 
+  def test_reopen_encoding_from_io
+    f1 = File.open(__FILE__, "rb:UTF-16LE")
+    f2 = File.open(__FILE__, "r:UTF-8")
+    f1.reopen(f2)
+    assert_equal(Encoding::UTF_8, f1.external_encoding)
+  ensure
+    f2.close
+    f1.close
+  end
+
   def test_reopen_opt_encoding
     feature7103 = '[ruby-core:47806]'
     make_tempfile_for_encoding {|t|
-- 
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