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from py.test import skip, raises
skip('test needs to be updated')
try:
from stackless import coroutine, CoroutineExit
except ImportError as e:
skip('cannot import stackless: %s' % (e,))
class Test_Coroutine:
def test_is_zombie(self):
co = coroutine()
def f():
print('in coro')
assert not co.is_zombie
co.bind(f)
assert not co.is_zombie
co.switch()
assert not co.is_zombie
def test_is_zombie_del_without_frame(self):
import gc
res = []
class MyCoroutine(coroutine):
def __del__(self):
res.append(self.is_zombie)
def f():
print('in coro')
co = MyCoroutine()
co.bind(f)
co.switch()
del co
for i in range(10):
gc.collect()
if res:
break
co = coroutine()
co.bind(f)
co.switch()
assert res[0], "is_zombie was False in __del__"
def test_is_zombie_del_with_frame(self):
import gc
res = []
class MyCoroutine(coroutine):
def __del__(self):
res.append(self.is_zombie)
main = coroutine.getcurrent()
def f():
print('in coro')
main.switch()
co = MyCoroutine()
co.bind(f)
co.switch()
del co
for i in range(10):
gc.collect()
if res:
break
co = coroutine()
co.bind(f)
co.switch()
assert res[0], "is_zombie was False in __del__"
def test_raise_propagate(self):
co = coroutine()
def f():
return 1/0
co.bind(f)
try:
co.switch()
except ZeroDivisionError:
pass
else:
raise AssertionError("exception not propagated")
def test_strange_test(self):
def f():
return 42
def create():
b = coroutine()
b.bind(f)
b.switch()
return b
a = coroutine()
a.bind(create)
b = a.switch()
def nothing():
pass
a.bind(nothing)
def kill():
a.kill()
b.bind(kill)
b.switch()
def test_kill(self):
co = coroutine()
def f():
pass
assert not co.is_alive
co.bind(f)
assert co.is_alive
co.kill()
assert not co.is_alive
def test_catch_coroutineexit(self):
coroutineexit = []
co_a = coroutine()
co_test = coroutine.getcurrent()
def a():
try:
co_test.switch()
except CoroutineExit:
coroutineexit.append(True)
raise
co_a.bind(a)
co_a.switch()
assert co_a.is_alive
co_a.kill()
assert coroutineexit == [True]
assert not co_a.is_alive
def test_throw(self):
exceptions = []
co = coroutine()
def f(main):
try:
main.switch()
except RuntimeError:
exceptions.append(True)
co.bind(f, coroutine.getcurrent())
co.switch()
co.throw(RuntimeError)
assert exceptions == [True]
def test_propagation(self):
exceptions = []
co = coroutine()
co2 = coroutine()
def f(main):
main.switch()
co.bind(f, coroutine.getcurrent())
co.switch()
try:
co.throw(RuntimeError)
except RuntimeError:
exceptions.append(1)
def f2():
raise RuntimeError
co2.bind(f2)
try:
co2.switch()
except RuntimeError:
exceptions.append(2)
assert exceptions == [1,2]
def test_bogus_bind(self):
co = coroutine()
def f():
pass
co.bind(f)
raises(ValueError, co.bind, f)
def test_simple_task(self):
maintask = coroutine.getcurrent()
def f():pass
co = coroutine()
co.bind(f)
co.switch()
assert not co.is_alive
assert maintask is coroutine.getcurrent()
def test_backto_main(self):
maintask = coroutine.getcurrent()
def f(task):
task.switch()
co = coroutine()
co.bind(f,maintask)
co.switch()
def test_wrapped_main(self):
class mwrap(object):
def __init__(self, coro):
self._coro = coro
def __getattr__(self, attr):
return getattr(self._coro, attr)
maintask = mwrap(coroutine.getcurrent())
def f(task):
task.switch()
co = coroutine()
co.bind(f,maintask)
co.switch()
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