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from __future__ import division
import unittest
from StringIO import StringIO
from fractions import Fraction
import schedcat.model.tasks as m
import schedcat.model.serialize as s
import schedcat.model.resources as r
class Tasks(unittest.TestCase):
def setUp(self):
self.t1 = m.SporadicTask(10, 100)
self.t2 = m.SporadicTask(5, 19, 15, id=3)
self.t3 = m.SporadicTask(25, 50, id=5, deadline=75)
def test_deadline_type(self):
self.assertTrue(self.t1.implicit_deadline())
self.assertFalse(self.t2.implicit_deadline())
self.assertFalse(self.t3.implicit_deadline())
self.assertTrue(self.t1.constrained_deadline())
self.assertTrue(self.t2.constrained_deadline())
self.assertFalse(self.t3.implicit_deadline())
def test_utilization(self):
self.assertEqual(self.t1.utilization_q(), Fraction(10, 100))
self.assertEqual(self.t1.utilization(), 0.1)
def test_density(self):
self.assertEqual(self.t2.density_q(), Fraction(1, 3))
self.assertEqual(self.t2.density(), 1/3)
self.assertEqual(self.t3.density_q(), Fraction(1, 2))
self.assertEqual(self.t3.density(), 0.5)
def test_repr(self):
e1 = eval("m." + repr(self.t1))
self.assertEqual(e1.cost, self.t1.cost)
self.assertEqual(e1.period, self.t1.period)
self.assertEqual(e1.deadline, self.t1.deadline)
self.assertEqual(e1.id, self.t1.id)
e2 = eval("m." + repr(self.t2))
self.assertEqual(e2.cost, self.t2.cost)
self.assertEqual(e2.period, self.t2.period)
self.assertEqual(e2.deadline, self.t2.deadline)
self.assertEqual(e2.id, self.t2.id)
e3 = eval("m." + repr(self.t3))
self.assertEqual(e3.cost, self.t3.cost)
self.assertEqual(e3.period, self.t3.period)
self.assertEqual(e3.deadline, self.t3.deadline)
self.assertEqual(e3.id, self.t3.id)
def test_maxjobs(self):
t = m.SporadicTask(None, 2)
t.response_time = 6.6
self.assertEqual(t.maxjobs(7.25), 7)
def test_tardiness(self):
t = m.SporadicTask(None, 2)
t.response_time = 1.5
self.assertEqual(t.tardiness(), 0)
t.response_time = 6
self.assertEqual(t.tardiness(), 4)
# TODO: Write tests for TaskSystem
class Tasks(unittest.TestCase):
def setUp(self):
pass
def test_property(self):
req = r.ResourceRequirement(1, 2, 10, 13, 4)
self.assertEqual(req.max_reads, 13)
self.assertEqual(req.max_writes, 2)
self.assertEqual(req.max_requests, 15)
self.assertEqual(req.max_write_length, 10)
self.assertEqual(req.max_read_length, 4)
self.assertEqual(req.max_length, 10)
def test_copy(self):
ts = m.TaskSystem([
m.SporadicTask(10, 100),
])
r.initialize_resource_model(ts)
ts[0].resmodel[0].add_request(10)
ts2 = ts.copy()
ts[0].resmodel[0].add_request(30)
self.assertEqual(ts[0].resmodel[0].max_length, 30)
self.assertEqual(ts[0].resmodel[0].max_requests, 2)
self.assertEqual(ts2[0].resmodel[0].max_length, 10)
self.assertEqual(ts2[0].resmodel[0].max_requests, 1)
class Serialization(unittest.TestCase):
def setUp(self):
self.t1 = m.SporadicTask(10, 100)
self.t2 = m.SporadicTask(5, 19, 15, id=3)
self.t3 = m.SporadicTask(25, 50, id=5, deadline=75)
self.ts = m.TaskSystem([self.t1, self.t2, self.t3])
self.f = StringIO()
def test_serialize_task(self):
for t in self.ts:
s.write_xml(s.task(t), self.f)
self.f.seek(0)
x = s.load(self.f)
self.assertIsInstance(x, m.SporadicTask)
self.assertEqual(x.cost, t.cost)
self.assertEqual(x.deadline, t.deadline)
self.assertEqual(x.period, t.period)
self.assertEqual(x.id, t.id)
self.f.seek(0)
self.f.truncate()
def test_serialize_taskset(self):
s.write(self.ts, self.f)
self.f.seek(0)
xs = s.load(self.f)
self.assertIsInstance(xs, m.TaskSystem)
self.assertEqual(len(xs), len(self.ts))
for x,t in zip(xs, self.ts):
self.assertEqual(x.cost, t.cost)
self.assertEqual(x.deadline, t.deadline)
self.assertEqual(x.period, t.period)
self.assertEqual(x.id, t.id)
def test_serialize_resmodel(self):
r.initialize_resource_model(self.ts)
self.t1.resmodel[1].add_request(1)
self.t2.resmodel[1].add_read_request(2)
self.t2.resmodel['serial I/O'].add_request(2)
self.t3.resmodel['serial I/O'].add_request(3)
for t in self.ts:
s.write_xml(s.task(t), self.f)
self.f.seek(0)
x = s.load(self.f)
self.assertIsInstance(x.resmodel, r.ResourceRequirements)
self.assertEqual(len(x.resmodel), len(t.resmodel))
self.assertEqual(x.resmodel.keys(), t.resmodel.keys())
for res_id in x.resmodel:
self.assertEqual(x.resmodel[res_id].max_reads, t.resmodel[res_id].max_reads)
self.assertEqual(x.resmodel[res_id].max_writes, t.resmodel[res_id].max_writes)
self.assertEqual(x.resmodel[res_id].max_requests, t.resmodel[res_id].max_requests)
self.assertEqual(x.resmodel[res_id].max_read_length, t.resmodel[res_id].max_read_length)
self.assertEqual(x.resmodel[res_id].max_write_length, t.resmodel[res_id].max_write_length)
self.assertEqual(x.resmodel[res_id].max_length, t.resmodel[res_id].max_length)
self.f.seek(0)
self.f.truncate()
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