1 files changed, 5 insertions, 1 deletions
diff --git a/test/ruby/test_process.rb b/test/ruby/test_process.rb
index 60a1c233cb..cd649053c0 100644
--- a/test/ruby/test_process.rb
+++ b/test/ruby/test_process.rb
@@ -404,9 +404,13 @@ class TestProcess < Test::Unit::TestCase
       IO.popen([*PWD, :chdir => d]) {|io|
         assert_equal(d, io.read.chomp)
       }
-      assert_raise(Errno::ENOENT) {
+      assert_raise_with_message(Errno::ENOENT, %r"d/notexist") {
         Process.wait Process.spawn(*PWD, :chdir => "d/notexist")
       }
+      n = "d/\u{1F37A}"
+      assert_raise_with_message(Errno::ENOENT, /#{n}/) {
+        Process.wait Process.spawn(*PWD, :chdir => n)
+      }
     }
   end