from bopytex.planner import Task
from bopytex.scheduler import Scheduler


def test_schedule_append():
    actions = {"DO": lambda _: "done"}
    scheduler = Scheduler(actions)
    tasks = [Task(action="DO", args={}, deps=[], output="")]
    scheduler.append(tasks)
    assert scheduler.tasks == tasks

def test_schedule_dispatch():
    actions = {"DO": lambda _: "done"}
    scheduler = Scheduler(actions)
    task = Task(action="DO", args={}, deps=[], output="Nothing")
    result = scheduler.dispatch(task)
    assert result == "done"


def test_schedule_one_task():
    actions = {"DO": lambda _: "done"}
    scheduler = Scheduler(actions)
    scheduler.append([Task(action="DO", args={}, deps=[], output="Nothing")])
    result = scheduler.__next__()
    assert result == "done"
    assert scheduler.tasks == []
    assert scheduler.done == ["Nothing"]