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import threading
import time
import pytest
import parsl
from parsl.app.app import python_app
from parsl.tests.configs.local_threads import fresh_config as local_config
@python_app
def slow_double(x, may_continue: threading.Event):
may_continue.wait()
return x * 2
@pytest.mark.local
def test_garbage_collect():
""" Launches an app with a dependency and waits till it's done and asserts that
the internal refs were wiped
"""
evt = threading.Event()
x = slow_double(10, evt)
x = slow_double(x, evt)
assert parsl.dfk().tasks[x.tid]['app_fu'] == x, "Tasks table should have app_fu ref before done"
evt.set()
assert x.result() == 10 * 4
assert x.tid not in parsl.dfk().tasks, "Task record should be wiped after task completion"
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