1 files changed, 9 insertions, 0 deletions
diff --git a/test/test_shellwords.rb b/test/test_shellwords.rb
index 86971b7237..0020235fdd 100644
--- a/test/test_shellwords.rb
+++ b/test/test_shellwords.rb
@@ -128,4 +128,13 @@ class TestShellwords < Test::Unit::TestCase
     # used as shell meta-character that needs to be escaped.
     assert_equal "\\あ\\い", "あい".shellescape
   end
+
+  def test_nul_char
+    assert_raise(ArgumentError) do
+      shellescape("\0")
+    end
+    assert_raise(ArgumentError) do
+      shelljoin(["\0"])
+    end
+  end
 end