https://git.ruby-lang.org/ruby.git/commit/?id=f818b1ed2b

From f818b1ed2b2ec16bbc55919082d6cafb99693db8 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@j...>
Date: Thu, 25 Feb 2021 09:24:15 -0800
Subject: [ruby/cgi] Add test for escapeHTML/unescapeHTML invalid encoding fix
 in pure ruby version

Also, remove pointless assert_nothing_raised(ArgumentError) while
here.

https://github.com/ruby/cgi/commit/c05edf5608
---
 test/cgi/test_cgi_util.rb | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/test/cgi/test_cgi_util.rb b/test/cgi/test_cgi_util.rb
index b7bb7b8..6ce8b42 100644
--- a/test/cgi/test_cgi_util.rb
+++ b/test/cgi/test_cgi_util.rb
@@ -36,9 +36,7 @@ class CGIUtilTest < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/cgi/test_cgi_util.rb#L36
   end
 
   def test_cgi_escape_with_invalid_byte_sequence
-    assert_nothing_raised(ArgumentError) do
-      assert_equal('%C0%3C%3C', CGI.escape("\xC0\<\<".dup.force_encoding("UTF-8")))
-    end
+    assert_equal('%C0%3C%3C', CGI.escape("\xC0\<\<".dup.force_encoding("UTF-8")))
   end
 
   def test_cgi_escape_preserve_encoding
@@ -191,3 +189,32 @@ class CGIUtilTest < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/cgi/test_cgi_util.rb#L189
     assert_equal('&lt;BR&gt;<A HREF="url"></A>', unescape_element(escapeHTML('<BR><A HREF="url"></A>'), ["A", "IMG"]))
   end
 end
+
+class CGIUtilPureRubyTest < Test::Unit::TestCase
+  def setup
+    CGI::Escape.module_eval do
+      alias _escapeHTML escapeHTML
+      remove_method :escapeHTML
+      alias _unescapeHTML unescapeHTML
+      remove_method :unescapeHTML
+    end
+  end
+
+  def teardown
+    CGI::Escape.module_eval do
+      alias escapeHTML _escapeHTML
+      remove_method :_escapeHTML
+      alias unescapeHTML _unescapeHTML
+      remove_method :_unescapeHTML
+    end
+  end
+
+  def test_cgi_escapeHTML_with_invalid_byte_sequence
+    assert_equal("&lt;\xA4??&gt;", CGI.escapeHTML(%[<\xA4??>]))
+  end
+
+  def test_cgi_unescapeHTML_with_invalid_byte_sequence
+    input = "\xFF&"
+    assert_equal(input, CGI.unescapeHTML(input))
+  end
+end
-- 
cgit v1.1


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