def test_separate_thread_with_time(loop, thread):
L = []
@gen.coroutine
def slow_write(x):
yield gen.sleep(0.1)
L.append(x)
source = Stream(loop=loop)
source.map(inc).sink(slow_write)
start = time()
source.emit(1)
stop = time()
assert stop - start > 0.1
assert L == [2]
def test_destroy():
source = Stream()
s = source.map(inc)
L = s.sink_to_list()
source.emit(1)
assert L == [2]
s.destroy()
assert not list(source.parents)
assert not s.children
source.emit(2)
assert L == [2]
def test_gc():
source = Stream()
L = []
a = source.map(L.append)
source.emit(1)
assert L == [1]
del a
import gc; gc.collect()
start = time()
while source.downstreams:
sleep(0.01)
assert time() < start + 1
source.emit(2)
assert L == [1]
