Index: Lib/test/test_sched.py
===================================================================
--- Lib/test/test_sched.py	(revisione 0)
+++ Lib/test/test_sched.py	(revisione 0)
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+import sched
+import time
+import unittest
+from test import test_support
+
+
+class TestCase(unittest.TestCase):
+    
+    def test_enter(self):
+        l = []
+        fun = lambda x: l.append(x)
+        scheduler = sched.scheduler(time.time, time.sleep)
+        for x in [0.05, 0.04, 0.03, 0.02, 0.01]:
+            z = scheduler.enter(x, 1, fun, (x,))
+        scheduler.run()
+        self.assertEqual(l, [0.01, 0.02, 0.03, 0.04, 0.05])
+
+    def test_enterabs(self):
+        l = []
+        fun = lambda x: l.append(x)
+        scheduler = sched.scheduler(time.time, time.sleep)
+        for x in [0.05, 0.04, 0.03, 0.02, 0.01]:
+            z = scheduler.enterabs(x, 1, fun, (x,))
+        scheduler.run()
+        self.assertEqual(l, [0.01, 0.02, 0.03, 0.04, 0.05])
+
+    def test_priority(self):
+        l = []
+        fun = lambda x: l.append(x)
+        scheduler = sched.scheduler(time.time, time.sleep)
+        for priority in [1, 2, 3, 4, 5]:
+            z = scheduler.enter(0.01, priority, fun, (priority,))
+        scheduler.run()
+        self.assertEqual(l, [1, 2, 3, 4, 5])
+
+    def test_cancel(self):
+        l = []
+        fun = lambda x: l.append(x)
+        scheduler = sched.scheduler(time.time, time.sleep)
+        event1 = scheduler.enter(0.01, 1, fun, (0.01,))
+        event2 = scheduler.enter(0.02, 1, fun, (0.02,))
+        event3 = scheduler.enter(0.03, 1, fun, (0.03,))
+        event4 = scheduler.enter(0.04, 1, fun, (0.04,))
+        event5 = scheduler.enter(0.05, 1, fun, (0.05,))
+        scheduler.cancel(event1)
+        scheduler.cancel(event5)
+        scheduler.run()
+        self.assertEqual(l, [0.02, 0.03, 0.04])
+
+    def test_empty(self):
+        l = []
+        fun = lambda x: l.append(x)
+        scheduler = sched.scheduler(time.time, time.sleep)
+        self.assertTrue(scheduler.empty())
+        for x in [0.05, 0.04, 0.03, 0.02, 0.01]:
+            z = scheduler.enterabs(x, 1, fun, (x,))
+        self.assertFalse(scheduler.empty())
+        scheduler.run()
+        self.assertTrue(scheduler.empty())
+
+    def test_queue(self):
+        l = []
+        events = []
+        fun = lambda x: l.append(x)
+        scheduler = sched.scheduler(time.time, time.sleep)
+        self.assertEqual(scheduler.queue, [])
+        for x in [0.05, 0.04, 0.03, 0.02, 0.01]:
+            events.append(scheduler.enterabs(x, 1, fun, (x,)))
+        self.assertEqual(scheduler.queue.sort(), events.sort())
+        scheduler.run()
+        self.assertEqual(scheduler.queue, [])
+
+
+def test_main():
+    test_support.run_unittest(TestCase)
+
+if __name__ == "__main__":
+    test_main()
+