def test_future_unwrap_cancel():
prom = Promise()
future = prom.future().unwrap()
future.cancel()
assert prom.isCancelRequested()
nested = Promise()
prom.setValue(nested.future())
# TODO add some sync-ness to remove those time.sleep :(
time.sleep(0.1)
assert nested.isCancelRequested()
nested.setCanceled()
time.sleep(0.1)
assert future.isCanceled()
def test_future_andthen_cancel():
global called
called = False
def callback(v):
global called
called = True
assert False
p = Promise()
f = p.future()
f2 = f.andThen(callback)
f2.cancel()
assert p.isCancelRequested()
p.setCanceled()
f2.wait(1000)
assert f2.isFinished()
assert f2.isCanceled()
time.sleep(0.1)
assert not called
def test_future_cancel_request():
promise = Promise()
future = promise.future()
future.cancel()
assert promise.isCancelRequested()
