1 files changed, 15 insertions, 0 deletions
diff --git a/test/readline/test_readline.rb b/test/readline/test_readline.rb
index f87435498c..4e82d46d91 100644
--- a/test/readline/test_readline.rb
+++ b/test/readline/test_readline.rb
@@ -41,6 +41,21 @@ module BasetestReadline
       assert_equal("> ", stdout.read(2))
       assert_equal(1, Readline::HISTORY.length)
       assert_equal("hello", Readline::HISTORY[0])
+
+      # Work around lack of SecurityError in Reline
+      # test mode with tainted prompt
+      return if kind_of?(TestRelineAsReadline)
+
+      Thread.start {
+        $SAFE = 1
+        assert_raise(SecurityError) do
+          replace_stdio(stdin.path, stdout.path) do
+            Readline.readline("> ".taint)
+          end
+        end
+      }.join
+    ensure
+      $SAFE = 0
     end
   end