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Test methods in twisted.internet.threads and reactor thread APIs.
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Tests for the reactor threading API.
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Try to change maximum number of threads.
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The reactor's threadpool is only available when the reactor is running,
so to have a sane behavior during the tests we make a dummy
L{threads.deferToThread} call.
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Test callInThread functionality: set a C{threading.Event}, and check
that it's not in the main thread.
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Test callFromThread functionality: from the main thread, and from
another thread.
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Try to make an overflow on the reactor waker using callFromThread.
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Utility method to test L{threads.blockingCallFromThread}.
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Test blockingCallFromThread facility: create a thread, call a function
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result returned.
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Test blockingCallFromThread as above, but be sure the resulting
Deferred is not already fired.
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Test error report for blockingCallFromThread.
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Test error report for blockingCallFromThread as above, but be sure the
resulting Deferred is not already fired.
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Test twisted.internet.threads.
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L{threads.callMultipleInThread} calls multiple functions in a thread.
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L{threads.deferToThread} executes the function passed, and correctly
handles the positional and keyword arguments given.
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Check that L{threads.deferToThread} return a failure object
with an appropriate exception instance when the called
function raises an exception.
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Check that a successful L{threads.deferToThread} followed by a one
that raises an exception correctly result as a failure.
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Test L{twisted.internet.threads.deferToThreadPool}.
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L{threads.deferToThreadPool} executes the function passed, and
correctly handles the positional and keyword arguments given.
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Check that L{threads.deferToThreadPool} return a failure object with an
appropriate exception instance when the called function raises an
exception.
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import time
import %(reactor)s
%(reactor)s.install()
from twisted.internet import reactor
def threadedCall():
print('threaded call')
reactor.callInThread(threadedCall)
# Spin very briefly to try to give the thread a chance to run, if it
# is going to. Is there a better way to achieve this behavior?
for i in range(100):
time.sleep(0.0)
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Test cases for the behavior of the reactor threadpool near startup
boundary conditions.
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until the reactor starts up, that calls attempted before it starts
are in fact executed once it has started, and that in both cases,
the reactor properly cleans itself up (which is tested for
somewhat implicitly, by requiring a child process be able to exit,
something it cannot do unless the threadpool has been properly
torn down).
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