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from concurrent.futures import Future
import parsl
from parsl.dataflow.errors import DependencyError
@parsl.python_app
def copy_app(v):
return v
def test_future_result_dependency():
plain_fut = Future()
parsl_fut = copy_app(plain_fut)
assert not parsl_fut.done()
message = "Test"
plain_fut.set_result(message)
assert parsl_fut.result() == message
def test_future_fail_dependency():
plain_fut = Future()
parsl_fut = copy_app(plain_fut)
assert not parsl_fut.done()
plain_fut.set_exception(ValueError("Plain failure"))
ex = parsl_fut.exception()
# check that what we got is a dependency error...
assert isinstance(ex, DependencyError)
# and that the dependency error string mentions the dependency
# Future, plain_fut, somewhere in its str
assert repr(plain_fut) in str(ex)
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