Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)
This commit is contained in:
600
Dependencies/Python/Lib/test/test_interpreters/test_channels.py
vendored
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600
Dependencies/Python/Lib/test/test_interpreters/test_channels.py
vendored
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@ -0,0 +1,600 @@
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import importlib
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import pickle
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import threading
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from textwrap import dedent
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import unittest
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import time
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from test.support import import_helper
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# Raise SkipTest if subinterpreters not supported.
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_channels = import_helper.import_module('_interpchannels')
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from test.support import interpreters
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from test.support.interpreters import channels
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from .utils import _run_output, TestBase
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class LowLevelTests(TestBase):
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# The behaviors in the low-level module is important in as much
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# as it is exercised by the high-level module. Therefore the
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# most # important testing happens in the high-level tests.
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# These low-level tests cover corner cases that are not
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# encountered by the high-level module, thus they
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# mostly shouldn't matter as much.
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# Additional tests are found in Lib/test/test__interpchannels.py.
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# XXX Those should be either moved to LowLevelTests or eliminated
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# in favor of high-level tests in this file.
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def test_highlevel_reloaded(self):
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# See gh-115490 (https://github.com/python/cpython/issues/115490).
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importlib.reload(channels)
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class TestChannels(TestBase):
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def test_create(self):
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r, s = channels.create()
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self.assertIsInstance(r, channels.RecvChannel)
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self.assertIsInstance(s, channels.SendChannel)
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def test_list_all(self):
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self.assertEqual(channels.list_all(), [])
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created = set()
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for _ in range(3):
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ch = channels.create()
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created.add(ch)
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after = set(channels.list_all())
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self.assertEqual(after, created)
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def test_shareable(self):
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interp = interpreters.create()
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rch, sch = channels.create()
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self.assertTrue(
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interpreters.is_shareable(rch))
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self.assertTrue(
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interpreters.is_shareable(sch))
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sch.send_nowait(rch)
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sch.send_nowait(sch)
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rch2 = rch.recv()
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sch2 = rch.recv()
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interp.prepare_main(rch=rch, sch=sch)
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sch.send_nowait(rch)
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sch.send_nowait(sch)
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interp.exec(dedent("""
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rch2 = rch.recv()
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sch2 = rch.recv()
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assert rch2 == rch
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assert sch2 == sch
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sch.send_nowait(rch2)
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sch.send_nowait(sch2)
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"""))
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rch3 = rch.recv()
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sch3 = rch.recv()
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self.assertEqual(rch2, rch)
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self.assertEqual(sch2, sch)
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self.assertEqual(rch3, rch)
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self.assertEqual(sch3, sch)
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def test_is_closed(self):
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rch, sch = channels.create()
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rbefore = rch.is_closed
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sbefore = sch.is_closed
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rch.close()
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rafter = rch.is_closed
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safter = sch.is_closed
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self.assertFalse(rbefore)
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self.assertFalse(sbefore)
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self.assertTrue(rafter)
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self.assertTrue(safter)
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class TestRecvChannelAttrs(TestBase):
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def test_id_type(self):
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rch, _ = channels.create()
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self.assertIsInstance(rch.id, _channels.ChannelID)
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def test_custom_id(self):
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rch = channels.RecvChannel(1)
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self.assertEqual(rch.id, 1)
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with self.assertRaises(TypeError):
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channels.RecvChannel('1')
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def test_id_readonly(self):
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rch = channels.RecvChannel(1)
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with self.assertRaises(AttributeError):
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rch.id = 2
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def test_equality(self):
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ch1, _ = channels.create()
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ch2, _ = channels.create()
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self.assertEqual(ch1, ch1)
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self.assertNotEqual(ch1, ch2)
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def test_pickle(self):
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ch, _ = channels.create()
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data = pickle.dumps(ch)
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unpickled = pickle.loads(data)
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self.assertEqual(unpickled, ch)
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class TestSendChannelAttrs(TestBase):
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def test_id_type(self):
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_, sch = channels.create()
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self.assertIsInstance(sch.id, _channels.ChannelID)
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def test_custom_id(self):
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sch = channels.SendChannel(1)
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self.assertEqual(sch.id, 1)
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with self.assertRaises(TypeError):
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channels.SendChannel('1')
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def test_id_readonly(self):
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sch = channels.SendChannel(1)
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with self.assertRaises(AttributeError):
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sch.id = 2
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def test_equality(self):
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_, ch1 = channels.create()
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_, ch2 = channels.create()
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self.assertEqual(ch1, ch1)
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self.assertNotEqual(ch1, ch2)
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def test_pickle(self):
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_, ch = channels.create()
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data = pickle.dumps(ch)
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unpickled = pickle.loads(data)
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self.assertEqual(unpickled, ch)
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class TestSendRecv(TestBase):
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def test_send_recv_main(self):
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r, s = channels.create()
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orig = b'spam'
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s.send_nowait(orig)
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obj = r.recv()
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self.assertEqual(obj, orig)
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self.assertIsNot(obj, orig)
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def test_send_recv_same_interpreter(self):
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interp = interpreters.create()
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interp.exec(dedent("""
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from test.support.interpreters import channels
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r, s = channels.create()
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orig = b'spam'
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s.send_nowait(orig)
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obj = r.recv()
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assert obj == orig, 'expected: obj == orig'
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assert obj is not orig, 'expected: obj is not orig'
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"""))
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@unittest.skip('broken (see BPO-...)')
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def test_send_recv_different_interpreters(self):
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r1, s1 = channels.create()
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r2, s2 = channels.create()
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orig1 = b'spam'
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s1.send_nowait(orig1)
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out = _run_output(
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interpreters.create(),
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dedent(f"""
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obj1 = r.recv()
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assert obj1 == b'spam', 'expected: obj1 == orig1'
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# When going to another interpreter we get a copy.
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assert id(obj1) != {id(orig1)}, 'expected: obj1 is not orig1'
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orig2 = b'eggs'
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print(id(orig2))
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s.send_nowait(orig2)
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"""),
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channels=dict(r=r1, s=s2),
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)
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obj2 = r2.recv()
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self.assertEqual(obj2, b'eggs')
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self.assertNotEqual(id(obj2), int(out))
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def test_send_recv_different_threads(self):
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r, s = channels.create()
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def f():
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while True:
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try:
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obj = r.recv()
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break
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except channels.ChannelEmptyError:
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time.sleep(0.1)
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s.send(obj)
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t = threading.Thread(target=f)
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t.start()
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orig = b'spam'
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s.send(orig)
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obj = r.recv()
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t.join()
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self.assertEqual(obj, orig)
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self.assertIsNot(obj, orig)
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def test_send_recv_nowait_main(self):
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r, s = channels.create()
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orig = b'spam'
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s.send_nowait(orig)
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obj = r.recv_nowait()
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self.assertEqual(obj, orig)
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self.assertIsNot(obj, orig)
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def test_send_recv_nowait_main_with_default(self):
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r, _ = channels.create()
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obj = r.recv_nowait(None)
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self.assertIsNone(obj)
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def test_send_recv_nowait_same_interpreter(self):
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interp = interpreters.create()
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interp.exec(dedent("""
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from test.support.interpreters import channels
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r, s = channels.create()
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orig = b'spam'
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s.send_nowait(orig)
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obj = r.recv_nowait()
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assert obj == orig, 'expected: obj == orig'
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# When going back to the same interpreter we get the same object.
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assert obj is not orig, 'expected: obj is not orig'
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"""))
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@unittest.skip('broken (see BPO-...)')
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def test_send_recv_nowait_different_interpreters(self):
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r1, s1 = channels.create()
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r2, s2 = channels.create()
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orig1 = b'spam'
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s1.send_nowait(orig1)
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out = _run_output(
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interpreters.create(),
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dedent(f"""
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obj1 = r.recv_nowait()
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assert obj1 == b'spam', 'expected: obj1 == orig1'
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# When going to another interpreter we get a copy.
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assert id(obj1) != {id(orig1)}, 'expected: obj1 is not orig1'
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orig2 = b'eggs'
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print(id(orig2))
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s.send_nowait(orig2)
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"""),
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channels=dict(r=r1, s=s2),
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)
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obj2 = r2.recv_nowait()
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self.assertEqual(obj2, b'eggs')
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self.assertNotEqual(id(obj2), int(out))
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def test_recv_timeout(self):
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r, _ = channels.create()
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with self.assertRaises(TimeoutError):
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r.recv(timeout=1)
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def test_recv_channel_does_not_exist(self):
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ch = channels.RecvChannel(1_000_000)
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with self.assertRaises(channels.ChannelNotFoundError):
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ch.recv()
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def test_send_channel_does_not_exist(self):
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ch = channels.SendChannel(1_000_000)
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with self.assertRaises(channels.ChannelNotFoundError):
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ch.send(b'spam')
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def test_recv_nowait_channel_does_not_exist(self):
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ch = channels.RecvChannel(1_000_000)
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with self.assertRaises(channels.ChannelNotFoundError):
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ch.recv_nowait()
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def test_send_nowait_channel_does_not_exist(self):
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ch = channels.SendChannel(1_000_000)
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with self.assertRaises(channels.ChannelNotFoundError):
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ch.send_nowait(b'spam')
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def test_recv_nowait_empty(self):
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ch, _ = channels.create()
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with self.assertRaises(channels.ChannelEmptyError):
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ch.recv_nowait()
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def test_recv_nowait_default(self):
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default = object()
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rch, sch = channels.create()
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obj1 = rch.recv_nowait(default)
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sch.send_nowait(None)
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sch.send_nowait(1)
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sch.send_nowait(b'spam')
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sch.send_nowait(b'eggs')
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obj2 = rch.recv_nowait(default)
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obj3 = rch.recv_nowait(default)
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obj4 = rch.recv_nowait()
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obj5 = rch.recv_nowait(default)
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obj6 = rch.recv_nowait(default)
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self.assertIs(obj1, default)
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self.assertIs(obj2, None)
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self.assertEqual(obj3, 1)
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self.assertEqual(obj4, b'spam')
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self.assertEqual(obj5, b'eggs')
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self.assertIs(obj6, default)
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def test_send_buffer(self):
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buf = bytearray(b'spamspamspam')
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obj = None
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rch, sch = channels.create()
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def f():
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nonlocal obj
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while True:
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try:
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obj = rch.recv()
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break
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except channels.ChannelEmptyError:
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time.sleep(0.1)
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t = threading.Thread(target=f)
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t.start()
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sch.send_buffer(buf)
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t.join()
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self.assertIsNot(obj, buf)
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self.assertIsInstance(obj, memoryview)
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self.assertEqual(obj, buf)
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buf[4:8] = b'eggs'
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self.assertEqual(obj, buf)
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obj[4:8] = b'ham.'
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self.assertEqual(obj, buf)
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def test_send_buffer_nowait(self):
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buf = bytearray(b'spamspamspam')
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rch, sch = channels.create()
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sch.send_buffer_nowait(buf)
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obj = rch.recv()
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self.assertIsNot(obj, buf)
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self.assertIsInstance(obj, memoryview)
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self.assertEqual(obj, buf)
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buf[4:8] = b'eggs'
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self.assertEqual(obj, buf)
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obj[4:8] = b'ham.'
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self.assertEqual(obj, buf)
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def test_send_cleared_with_subinterpreter(self):
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def common(rch, sch, unbound=None, presize=0):
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if not unbound:
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extraargs = ''
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elif unbound is channels.UNBOUND:
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extraargs = ', unbound=channels.UNBOUND'
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elif unbound is channels.UNBOUND_ERROR:
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extraargs = ', unbound=channels.UNBOUND_ERROR'
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elif unbound is channels.UNBOUND_REMOVE:
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extraargs = ', unbound=channels.UNBOUND_REMOVE'
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else:
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raise NotImplementedError(repr(unbound))
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interp = interpreters.create()
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_run_output(interp, dedent(f"""
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from test.support.interpreters import channels
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sch = channels.SendChannel({sch.id})
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obj1 = b'spam'
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obj2 = b'eggs'
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sch.send_nowait(obj1{extraargs})
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sch.send_nowait(obj2{extraargs})
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"""))
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self.assertEqual(
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_channels.get_count(rch.id),
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presize + 2,
|
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)
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|
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if presize == 0:
|
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obj1 = rch.recv()
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self.assertEqual(obj1, b'spam')
|
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self.assertEqual(
|
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_channels.get_count(rch.id),
|
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presize + 1,
|
||||
)
|
||||
|
||||
return interp
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|
||||
with self.subTest('default'): # UNBOUND
|
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rch, sch = channels.create()
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interp = common(rch, sch)
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del interp
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self.assertEqual(_channels.get_count(rch.id), 1)
|
||||
obj1 = rch.recv()
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
self.assertIs(obj1, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
with self.assertRaises(channels.ChannelEmptyError):
|
||||
rch.recv_nowait()
|
||||
|
||||
with self.subTest('UNBOUND'):
|
||||
rch, sch = channels.create()
|
||||
interp = common(rch, sch, channels.UNBOUND)
|
||||
del interp
|
||||
self.assertEqual(_channels.get_count(rch.id), 1)
|
||||
obj1 = rch.recv()
|
||||
self.assertIs(obj1, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
with self.assertRaises(channels.ChannelEmptyError):
|
||||
rch.recv_nowait()
|
||||
|
||||
with self.subTest('UNBOUND_ERROR'):
|
||||
rch, sch = channels.create()
|
||||
interp = common(rch, sch, channels.UNBOUND_ERROR)
|
||||
|
||||
del interp
|
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self.assertEqual(_channels.get_count(rch.id), 1)
|
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with self.assertRaises(channels.ItemInterpreterDestroyed):
|
||||
rch.recv()
|
||||
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
with self.assertRaises(channels.ChannelEmptyError):
|
||||
rch.recv_nowait()
|
||||
|
||||
with self.subTest('UNBOUND_REMOVE'):
|
||||
rch, sch = channels.create()
|
||||
|
||||
interp = common(rch, sch, channels.UNBOUND_REMOVE)
|
||||
del interp
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
with self.assertRaises(channels.ChannelEmptyError):
|
||||
rch.recv_nowait()
|
||||
|
||||
sch.send_nowait(b'ham', unbound=channels.UNBOUND_REMOVE)
|
||||
self.assertEqual(_channels.get_count(rch.id), 1)
|
||||
interp = common(rch, sch, channels.UNBOUND_REMOVE, 1)
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||||
self.assertEqual(_channels.get_count(rch.id), 3)
|
||||
sch.send_nowait(42, unbound=channels.UNBOUND_REMOVE)
|
||||
self.assertEqual(_channels.get_count(rch.id), 4)
|
||||
del interp
|
||||
self.assertEqual(_channels.get_count(rch.id), 2)
|
||||
obj1 = rch.recv()
|
||||
obj2 = rch.recv()
|
||||
self.assertEqual(obj1, b'ham')
|
||||
self.assertEqual(obj2, 42)
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
with self.assertRaises(channels.ChannelEmptyError):
|
||||
rch.recv_nowait()
|
||||
|
||||
def test_send_cleared_with_subinterpreter_mixed(self):
|
||||
rch, sch = channels.create()
|
||||
interp = interpreters.create()
|
||||
|
||||
# If we don't associate the main interpreter with the channel
|
||||
# then the channel will be automatically closed when interp
|
||||
# is destroyed.
|
||||
sch.send_nowait(None)
|
||||
rch.recv()
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
|
||||
_run_output(interp, dedent(f"""
|
||||
from test.support.interpreters import channels
|
||||
sch = channels.SendChannel({sch.id})
|
||||
sch.send_nowait(1, unbound=channels.UNBOUND)
|
||||
sch.send_nowait(2, unbound=channels.UNBOUND_ERROR)
|
||||
sch.send_nowait(3)
|
||||
sch.send_nowait(4, unbound=channels.UNBOUND_REMOVE)
|
||||
sch.send_nowait(5, unbound=channels.UNBOUND)
|
||||
"""))
|
||||
self.assertEqual(_channels.get_count(rch.id), 5)
|
||||
|
||||
del interp
|
||||
self.assertEqual(_channels.get_count(rch.id), 4)
|
||||
|
||||
obj1 = rch.recv()
|
||||
self.assertIs(obj1, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 3)
|
||||
|
||||
with self.assertRaises(channels.ItemInterpreterDestroyed):
|
||||
rch.recv()
|
||||
self.assertEqual(_channels.get_count(rch.id), 2)
|
||||
|
||||
obj2 = rch.recv()
|
||||
self.assertIs(obj2, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 1)
|
||||
|
||||
obj3 = rch.recv()
|
||||
self.assertIs(obj3, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
|
||||
def test_send_cleared_with_subinterpreter_multiple(self):
|
||||
rch, sch = channels.create()
|
||||
interp1 = interpreters.create()
|
||||
interp2 = interpreters.create()
|
||||
|
||||
sch.send_nowait(1)
|
||||
_run_output(interp1, dedent(f"""
|
||||
from test.support.interpreters import channels
|
||||
rch = channels.RecvChannel({rch.id})
|
||||
sch = channels.SendChannel({sch.id})
|
||||
obj1 = rch.recv()
|
||||
sch.send_nowait(2, unbound=channels.UNBOUND)
|
||||
sch.send_nowait(obj1, unbound=channels.UNBOUND_REMOVE)
|
||||
"""))
|
||||
_run_output(interp2, dedent(f"""
|
||||
from test.support.interpreters import channels
|
||||
rch = channels.RecvChannel({rch.id})
|
||||
sch = channels.SendChannel({sch.id})
|
||||
obj2 = rch.recv()
|
||||
obj1 = rch.recv()
|
||||
"""))
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
sch.send_nowait(3)
|
||||
_run_output(interp1, dedent("""
|
||||
sch.send_nowait(4, unbound=channels.UNBOUND)
|
||||
# interp closed here
|
||||
sch.send_nowait(5, unbound=channels.UNBOUND_REMOVE)
|
||||
sch.send_nowait(6, unbound=channels.UNBOUND)
|
||||
"""))
|
||||
_run_output(interp2, dedent("""
|
||||
sch.send_nowait(7, unbound=channels.UNBOUND_ERROR)
|
||||
# interp closed here
|
||||
sch.send_nowait(obj1, unbound=channels.UNBOUND_ERROR)
|
||||
sch.send_nowait(obj2, unbound=channels.UNBOUND_REMOVE)
|
||||
sch.send_nowait(8, unbound=channels.UNBOUND)
|
||||
"""))
|
||||
_run_output(interp1, dedent("""
|
||||
sch.send_nowait(9, unbound=channels.UNBOUND_REMOVE)
|
||||
sch.send_nowait(10, unbound=channels.UNBOUND)
|
||||
"""))
|
||||
self.assertEqual(_channels.get_count(rch.id), 10)
|
||||
|
||||
obj3 = rch.recv()
|
||||
self.assertEqual(obj3, 3)
|
||||
self.assertEqual(_channels.get_count(rch.id), 9)
|
||||
|
||||
obj4 = rch.recv()
|
||||
self.assertEqual(obj4, 4)
|
||||
self.assertEqual(_channels.get_count(rch.id), 8)
|
||||
|
||||
del interp1
|
||||
self.assertEqual(_channels.get_count(rch.id), 6)
|
||||
|
||||
# obj5 was removed
|
||||
|
||||
obj6 = rch.recv()
|
||||
self.assertIs(obj6, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 5)
|
||||
|
||||
obj7 = rch.recv()
|
||||
self.assertEqual(obj7, 7)
|
||||
self.assertEqual(_channels.get_count(rch.id), 4)
|
||||
|
||||
del interp2
|
||||
self.assertEqual(_channels.get_count(rch.id), 3)
|
||||
|
||||
# obj1
|
||||
with self.assertRaises(channels.ItemInterpreterDestroyed):
|
||||
rch.recv()
|
||||
self.assertEqual(_channels.get_count(rch.id), 2)
|
||||
|
||||
# obj2 was removed
|
||||
|
||||
obj8 = rch.recv()
|
||||
self.assertIs(obj8, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 1)
|
||||
|
||||
# obj9 was removed
|
||||
|
||||
obj10 = rch.recv()
|
||||
self.assertIs(obj10, channels.UNBOUND)
|
||||
self.assertEqual(_channels.get_count(rch.id), 0)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
# Test needs to be a package, so we can do relative imports.
|
||||
unittest.main()
|
||||
Reference in New Issue
Block a user