def simulation(numseconds, pagesperminute):
labprinter = Printer(pagesperminute)
printerqueue = Queue()
waitingtimes = []
longestqueue = 0
for currentsecond in range(numseconds):
if newprinttask():
newtask = Task(currentsecond)
printerqueue.enqueue(newtask)
if printerqueue.size() > longestqueue:
longestqueue = printerqueue.size()
if not labprinter.busy() and printerqueue.has_items():
nexttask = printerqueue.dequeue()
waitingtimes.append(nexttask.waittime(currentsecond))
labprinter.startnext(nexttask)
labprinter.tick()
averagewait = sum(waitingtimes) / len(waitingtimes)
print "Average Wait %6.2f secs %3d tasks remaining." % (
averagewait, printerqueue.size())
print "The longest the queue got to was %d tasks. \n" % (longestqueue)
def test_tick(self):
# Create a new printer, give it a task, check if ticking down to 0 works
laserjet = Printer(20)
laserjet.currenttask = True
laserjet.timeremaining = 10
self.assertEqual(laserjet.timeremaining, 10)
laserjet.tick()
self.assertEqual(laserjet.timeremaining, 9)
for i in range(9):
laserjet.tick()
self.assertEqual(laserjet.currenttask, None)
self.assertEqual(laserjet.timeremaining, 0)
def test_tick(self):
# Create a new printer, give it a task, check if ticking down to 0 works
laserjet = Printer(20)
laserjet.currenttask = True
laserjet.timeremaining = 10
self.assertEqual(laserjet.timeremaining, 10)
laserjet.tick()
self.assertEqual(laserjet.timeremaining, 9)
for i in range(9):
laserjet.tick()
self.assertEqual(laserjet.currenttask, None)
self.assertEqual(laserjet.timeremaining, 0)
def simulation(numseconds, pagesperminute):
labprinter = Printer(pagesperminute)
printerqueue = Queue()
waitingtimes = []
longestqueue = 0
for currentsecond in range(numseconds):
if newprinttask():
newtask = Task(currentsecond)
printerqueue.enqueue(newtask)
if printerqueue.size() > longestqueue:
longestqueue = printerqueue.size()
if not labprinter.busy() and printerqueue.has_items():
nexttask = printerqueue.dequeue()
waitingtimes.append(nexttask.waittime(currentsecond))
labprinter.startnext(nexttask)
labprinter.tick()
averagewait = sum(waitingtimes)/len(waitingtimes)
print "Average Wait %6.2f secs %3d tasks remaining." % (averagewait, printerqueue.size())
print "The longest the queue got to was %d tasks. \n" % (longestqueue)
def test_busy(self):
# Create a printer, give it a task, check if busy
canon = Printer(12)
self.assertEqual(canon.busy(), False)
canon.currenttask = True
self.assertEqual(canon.busy(), True)
def test_init(self):
# Create a printer, check if initial values match
inkjet = Printer(6)
self.assertEqual(inkjet.pagerate, 6)
self.assertEqual(inkjet.currenttask, None)
self.assertEqual(inkjet.timeremaining, 0)
def test_busy(self):
# Create a printer, give it a task, check if busy
canon = Printer(12)
self.assertEqual(canon.busy(), False)
canon.currenttask = True
self.assertEqual(canon.busy(), True)