Edit: fail_slp_switch.py
# -*- coding: utf-8 -*- """ A test helper for seeing what happens when slp_switch() fails. """ # pragma: no cover import greenlet print('fail_slp_switch is running', flush=True) runs = [] def func(): runs.append(1) greenlet.getcurrent().parent.switch() runs.append(2) greenlet.getcurrent().parent.switch() runs.append(3) g = greenlet._greenlet.UnswitchableGreenlet(func) g.switch() assert runs == [1] g.switch() assert runs == [1, 2] g.force_slp_switch_error = True # This should crash. g.switch()
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