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skip timeout test if SIGALRM is not defined #535

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skip timeout test if SIGALRM is not defined #535

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22 changes: 14 additions & 8 deletions control/tests/rlocus_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -95,11 +95,17 @@ def test_rlocus_default_wn(self):
[-1e-2, 1-1e7j, 1+1e7j], [0, -1e7j, 1e7j], 1))

# Set up a timer to catch execution time
def signal_handler(signum, frame):
raise Exception("rlocus took too long to complete")
signal.signal(signal.SIGALRM, signal_handler)

# Run the command and reset the alarm
signal.alarm(2) # 2 second timeout
ct.root_locus(sys)
signal.alarm(0) # reset the alarm
try:
def signal_handler(signum, frame):
raise Exception("rlocus took too long to complete")
signal.signal(signal.SIGALRM, signal_handler)

# Run the command and reset the alarm
signal.alarm(2) # 2 second timeout
ct.root_locus(sys)
signal.alarm(0) # reset the alarm

except AttributeError:
# If no SIGALRM (eg, on Windows), then skip this test
pass