def test_optional_task_dependency_3(self) -> None:
"""Type checking."""
pb = ps.SchedulingProblem("OptionalDependency3", horizon=9)
task_1 = ps.FixedDurationTask("task1", duration=5) # mandatory
task_2 = ps.FixedDurationTask("task2", duration=4) # mandatory
task_3 = ps.FixedDurationTask("task3", duration=1) # mandatory
with self.assertRaises(TypeError):
ps.OptionalTaskConditionSchedule(task_1, pb.horizon > 10)
with self.assertRaises(TypeError):
ps.OptionalTasksDependency(task_2, task_3)
def test_optional_condition_2(self) -> None:
"""A task scheduled only if the horizon is > 10."""
pb = ps.SchedulingProblem("OptionalCondition2", horizon=9)
task_1 = ps.FixedDurationTask("task1", duration=9) # mandatory
task_2 = ps.FixedDurationTask("task2", duration=4,
optional=True) # optional
ps.OptionalTaskConditionSchedule(task_2, pb.horizon > 10)
solver = ps.SchedulingSolver(pb, random_values=True)
solution = solver.solve()
self.assertTrue(solution)
self.assertTrue(solution.tasks[task_1.name].scheduled)
self.assertFalse(solution.tasks[task_2.name].scheduled)
def test_optional_condition_1(self) -> None:
"""A task scheduled only if the horizon is > 10."""
pb = ps.SchedulingProblem("OptionalCondition1")
task_1 = ps.FixedDurationTask("task1", duration=13) # mandatory
task_2 = ps.FixedDurationTask("task2", duration=4,
optional=True) # optional
cond = ps.OptionalTaskConditionSchedule(task_2, pb.horizon > 10)
pb.add_constraint(cond)
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)
def test_optional_task_dependency_2(self) -> None:
"""task_3 is not scheduled, because task_2 should not."""
pb = ps.SchedulingProblem("OptionalDependency2", horizon=9)
task_1 = ps.FixedDurationTask("task1", duration=5) # mandatory
task_2 = ps.FixedDurationTask("task2", duration=4,
optional=True) # optional
task_3 = ps.FixedDurationTask("task3", duration=1,
optional=True) # optional
ps.OptionalTaskConditionSchedule(task_2, pb.horizon > 10)
ps.OptionalTasksDependency(task_2, task_3)
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.assertFalse(solution.tasks[task_3.name].scheduled)