def test_compute_priority(self):
r_priority = dict((name, i) for i, name in \
enumerate(["first", "second", "third", "fourth"]))
scheduler = Scheduler()
scheduler.set_constraints("second", "first", "third")
scheduler.set_constraints("third", before="fourth")
self.assertEqual(scheduler.compute_priority(), r_priority)
def test_after(self):
scheduler = Scheduler()
scheduler.set_constraints("second", "first")
scheduler.set_constraints("third", "second")
self.assertEqual(scheduler.order("third"), ["first", "second"])
def test_cycle(self):
scheduler = Scheduler()
scheduler.set_constraints("second", before="third")
scheduler.set_constraints("third", before="second")
self.assertRaises(DepSolverError, lambda: scheduler.order("third"))
def test_before(self):
scheduler = Scheduler()
scheduler.set_constraints("second", before="third")
scheduler.set_constraints("first", before="second")
self.assertEqual(scheduler.order("third"), ["first", "second"])
