def test_tasks_start_sync(self) -> None:
pb = ps.SchedulingProblem("TasksStartSync")
t_1 = ps.FixedDurationTask("t1", duration=2)
t_2 = ps.FixedDurationTask("t2", duration=3)
ps.TaskStartAt(t_1, 7)
ps.TasksStartSynced(t_1, t_2)
solver = ps.SchedulingSolver(pb)
solution = solver.solve()
self.assertTrue(solution)
self.assertEqual(solution.tasks[t_1.name].start,
solution.tasks[t_2.name].start)
def test_optional_tasks_start_sync_2(self) -> None:
"""Task 2 cannot be scheduled."""
pb = ps.SchedulingProblem("OptionalTasksStartSynced2", horizon=5)
task_1 = ps.FixedDurationTask("task1", duration=3) # mandatory
task_2 = ps.FixedDurationTask("task2", duration=4,
optional=True) # optional
pb.add_constraint(ps.TaskStartAt(task_1, 2))
pb.add_constraint(ps.TasksStartSynced(task_1, task_2))
solver = ps.SchedulingSolver(pb)
solution = solver.solve()
self.assertTrue(solution)
self.assertTrue(solution.tasks[task_1.name].scheduled)
self.assertFalse(solution.tasks[task_2.name].scheduled)
self.assertEqual(solution.tasks[task_1.name].start, 2)
self.assertEqual(solution.tasks[task_1.name].end, 5)
def test_optional_tasks_start_sync_1(self) -> None:
"""Tasks can be scheduled."""
pb = ps.SchedulingProblem("OptionalTasksStartSynced1", horizon=6)
task_1 = ps.FixedDurationTask("task1", duration=3) # mandatory
task_2 = ps.FixedDurationTask("task2", duration=4,
optional=True) # optional
pb.add_constraint(ps.TaskStartAt(task_1, 2))
pb.add_constraint(ps.TasksStartSynced(task_1, task_2))
# Force schedule, otherwise by default it is not scheduled
pb.add_constraint(task_2.scheduled == True)
solver = ps.SchedulingSolver(pb)
solution = solver.solve()
self.assertTrue(solution)
self.assertTrue(solution.tasks[task_1.name].scheduled)
self.assertTrue(solution.tasks[task_2.name].scheduled)
self.assertEqual(solution.tasks[task_1.name].start, 2)
self.assertEqual(solution.tasks[task_1.name].end, 5)
self.assertEqual(solution.tasks[task_2.name].start, 2)
self.assertEqual(solution.tasks[task_2.name].end, 6)