1 files changed, 28 insertions, 0 deletions
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index 6db6126e28..2e5f76d692 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -768,6 +768,34 @@ class TestRubyOptions < Test::Unit::TestCase
         assert_in_out_err(["-e", "puts ARGV", "*.txt"], "", ougai)
       end
     end
+
+    def assert_e_script_encoding(str, args = [])
+      cmds = [
+        EnvUtil::LANG_ENVS.inject({}) {|h, k| h[k] = ENV[k]; h},
+        *args,
+        '-e', "s = '#{str}'",
+        '-e', 'puts s.encoding.name',
+        '-e', 'puts s.dump',
+      ]
+      assert_in_out_err(cmds, "", [str.encoding.name, str.dump], [],
+                        "#{str.encoding}:#{str.dump} #{args.inspect}")
+    end
+
+    # tested codepages: 437 850 852 855 932 65001
+    # Since the codepage is shared all processes per conhost.exe, do
+    # not chcp, or parallel test may break.
+    def test_locale_codepage
+      locale = Encoding.find("locale")
+      list = %W"\u{c7} \u{452} \u{3066 3059 3068}"
+      list.each do |s|
+        assert_e_script_encoding(s, %w[-U])
+      end
+      list.each do |s|
+        s = s.encode(locale) rescue next
+        assert_e_script_encoding(s)
+        assert_e_script_encoding(s, %W[-E#{locale.name}])
+      end
+    end
   when /cygwin/
     def test_command_line_non_ascii
       assert_separately([{"LC_ALL"=>"ja_JP.SJIS"}, "-", "\u{3042}".encode("SJIS")], <<-"end;")