#!/usr/bin/env python

import sched
import time
import unittest
from test import 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 [0.5, 0.4, 0.3, 0.2, 0.1]:
            z = scheduler.enter(x, 1, fun, (x,))
        scheduler.run()
        self.assertEqual(l, [0.1, 0.2, 0.3, 0.4, 0.5])

    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.enterabs(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)
        now = time.time()
        event1 = scheduler.enterabs(now + 0.01, 1, fun, (0.01,))
        event2 = scheduler.enterabs(now + 0.02, 1, fun, (0.02,))
        event3 = scheduler.enterabs(now + 0.03, 1, fun, (0.03,))
        event4 = scheduler.enterabs(now + 0.04, 1, fun, (0.04,))
        event5 = scheduler.enterabs(now + 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():
    support.run_unittest(TestCase)

if __name__ == "__main__":
    test_main()