diff -r c8c9971bdc53 Lib/idlelib/PathBrowser.py
--- a/Lib/idlelib/PathBrowser.py	Thu Feb 27 18:48:13 2014 -0500
+++ b/Lib/idlelib/PathBrowser.py	Fri Feb 28 19:51:42 2014 +0530
@@ -88,11 +88,24 @@
         return sorted
 
 def main():
-    from idlelib import PyShell
-    PathBrowser(PyShell.flist)
+    """Run the dialog"""
+    from idlelib.PyShell import PyShell, PyShellFileList
+    from tkinter import Tk, Button
+    root = Tk()
+    root.title('PathBrowser Test Dialog')
+    root.geometry("%dx%d%+d%+d" % (275, 25, 50, 50))
+    flist = PyShellFileList(root)
+
+    def run():
+        PathBrowser(flist)
+
+    Button(root, text='Path Browser', command=run).pack()
     if sys.stdin is sys.__stdin__:
-        mainloop()
+        root.mainloop()
 
 if __name__ == "__main__":
+    """Run the dialog and its tests"""
+    main()   
     from unittest import main
     main('idlelib.idle_test.test_pathbrowser', verbosity=2, exit=False)
+
diff -r c8c9971bdc53 Lib/idlelib/idle_test/test_pathbrowser.py
--- a/Lib/idlelib/idle_test/test_pathbrowser.py	Thu Feb 27 18:48:13 2014 -0500
+++ b/Lib/idlelib/idle_test/test_pathbrowser.py	Fri Feb 28 19:51:42 2014 +0530
@@ -1,4 +1,7 @@
 import unittest
+import os
+import sys
+import idlelib
 import idlelib.PathBrowser as PathBrowser
 
 class PathBrowserTest(unittest.TestCase):
@@ -8,5 +11,16 @@
         d = PathBrowser.DirBrowserTreeItem('')
         d.GetSubList()
 
+        self.assertEqual('', d.GetText())
+
+        dir = os.path.split(os.path.abspath(idlelib.__file__))[0]
+        self.assertEqual(d.ispackagedir(dir), True)
+        self.assertEqual(d.ispackagedir(dir + '/Icons'), 0)
+
+    def test_PathBrowserTreeItem(self):
+        p = PathBrowser.PathBrowserTreeItem()
+        self.assertEqual(p.GetText(), 'sys.path')
+        self.assertEqual(len(p.GetSubList()), len(sys.path))
+
 if __name__ == '__main__':
     unittest.main(verbosity=2, exit=False)