def test_combine_tasks():
p1 = Process(name='p1')
p2 = Process(name='p2')
p3 = Process(name='p3')
p4 = Process(name='p4')
r100 = Resources(cpu=1, ram=0, disk=0)
r010 = Resources(cpu=0, ram=1, disk=0)
r001 = Resources(cpu=0, ram=0, disk=1)
r111 = Units.resources_sum(r100, r010, r001)
t1 = Task(name="p1p2", processes=[p1, p2], constraints=order(p1, p2),
resources=Units.resources_sum(r100, r010))
t2 = Task(name="p3p4", processes=[p3, p4], constraints=order(p3, p4),
resources=r001)
assert combine_tasks() == Task()
assert combine_tasks(t1) == t1
assert combine_tasks(t2) == t2
t3 = combine_tasks(t1, t2)
assert t3.name() == t2.name()
assert t3.resources() == r111
assert set(t3.processes()) == set([p1, p2, p3, p4])
assert set(t3.constraints()) == set(order(p1, p2) + order(p3, p4))
t4 = concat_tasks(t1, t2)
assert t4.name() == t2.name()
assert t4.resources() == r111
assert set(t4.processes()) == set([p1, p2, p3, p4])
assert set(t4.constraints()) == set(
order(p1, p2) + order(p3, p4) + order(p1, p3) + order(p1, p4) +
order(p2, p3) + order(p2, p4))
def test_order():
p1 = Process(name='p1')
p2 = Process(name='p2')
p1p2 = [Constraint(order=['p1', 'p2'])]
assert order(p1, p2) == p1p2
assert order('p1', p2) == p1p2
assert order(p1, 'p2') == p1p2
assert order('p1', 'p2') == p1p2
assert order(u'p1', 'p2') == p1p2
with pytest.raises(ValueError):
order([p1])
with pytest.raises(ValueError):
order(None)
