Issue #15392: Create a unittest framework for IDLE, 2.7 version.
Preliminary patch by Rajagopalasarma Jayakrishnan.
diff --git a/Lib/idlelib/PathBrowser.py b/Lib/idlelib/PathBrowser.py
index d88a48e..0f4fb3e 100644
--- a/Lib/idlelib/PathBrowser.py
+++ b/Lib/idlelib/PathBrowser.py
@@ -92,4 +92,5 @@
         mainloop()
 
 if __name__ == "__main__":
-    main()
+    from unittest import main
+    main('idlelib.idle_test.test_pathbrowser', verbosity=2, exit=False)