1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index eef242bc7c..2674df4243 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -1874,4 +1874,11 @@ class TestString < Test::Unit::TestCase
     assert_equal(s, k, '[ruby-dev:39068]')
     assert_equal(Encoding::UTF_8, k.encoding, '[ruby-dev:39068]')
   end
+
+  def test_ascii_incomat_inspect
+    [Encoding::UTF_16LE, Encoding::UTF_16BE,
+     Encoding::UTF_32LE, Encoding::UTF_32BE].each do |e|
+      assert_equal('"\\u0061\\u0062\\u0063"', "abc".encode(e).inspect)
+    end
+  end
 end