fix cron with py3, added initial tests, close #1618

gluon/tests/__init__.py

@@ -22,6 +22,7 @@ from .test_appadmin import *
 from .test_web import *
 from .test_sqlhtml import *
 from .test_scheduler import *
+from .test_cron import *
 
 if sys.version[:3] == '2.7':
     from .test_is_url import *

gluon/tests/test_cron.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+""" Unit tests for cron """
+import unittest, os
+from gluon.newcron import Token, crondance
+
+class TestCron(unittest.TestCase):
+
+
+    def test_Token(self):
+        appname_path = os.path.join(os.getcwd(), 'applications', 'welcome')
+        t = Token(path=appname_path)
+        self.assertNotEqual(t.acquire(), None)
+        self.assertFalse(t.release())
+        self.assertEqual(t.acquire(), None)
+        self.assertTrue(t.release())
+        return
+        
+    def test_crondance(self):
+        #TODO update crondance to return something 
+        crondance(os.getcwd())
+        
+