diff -r f5906026a7e9 Lib/idlelib/Delegator.py
--- a/Lib/idlelib/Delegator.py	Sun Jun 02 11:59:47 2013 -0700
+++ b/Lib/idlelib/Delegator.py	Tue Jun 11 16:59:18 2013 +0530
@@ -31,3 +31,8 @@
 
     def getdelegate(self):
         return self.delegate
+
+if __name__ == '__main__':
+    #main()
+    from unittest import main
+    main('idlelib.idle_test.test_delegator', verbosity=2, exit=False)
diff -r f5906026a7e9 Lib/idlelib/idle_test/test_delegator.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Lib/idlelib/idle_test/test_delegator.py	Tue Jun 11 16:59:18 2013 +0530
@@ -0,0 +1,25 @@
+import unittest
+import tkinter
+from tkinter.ttk import setup_master
+import idlelib.Delegator as dl
+
+
+class Test_delegator(unittest.TestCase):
+
+    def setUp(self):
+        self.delegator = dl.Delegator()
+        self.root = setup_master()
+        self.text = tkinter.Text(self.root)
+
+    def tearDown(self):
+        self.delegator = None
+        self.text.destroy()
+
+    def test_setdelegate(self):
+        self.text.insert('1.0', 'hi-test')
+        self.delegator.setdelegate(self.text)
+        text_expected = self.delegator.getdelegate()
+        self.assertEqual(text_expected.search('-test', '1.0', 'end'), '1.2')
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2, exit=False)