mirror of
https://github.com/python/cpython.git
synced 2025-10-31 13:41:24 +00:00
Revert "bpo-32604: PEP 554 for use in test suite (GH-19985)" (#20465)
This reverts commit 9d17cbf33d.
This commit is contained in:
Pablo Galindo
GitHub
parent
76ef255bde
commit
7d80b35af1
4 changed files with 0 additions and 865 deletions
|
|
@ -1,183 +0,0 @@
|
|||
"""Subinterpreters High Level Module."""
|
||||
|
||||
import _xxsubinterpreters as _interpreters
|
||||
|
||||
# aliases:
|
||||
from _xxsubinterpreters import (
|
||||
ChannelError, ChannelNotFoundError, ChannelEmptyError,
|
||||
is_shareable,
|
||||
)
|
||||
|
||||
|
||||
__all__ = [
|
||||
'Interpreter', 'get_current', 'get_main', 'create', 'list_all',
|
||||
'SendChannel', 'RecvChannel',
|
||||
'create_channel', 'list_all_channels', 'is_shareable',
|
||||
'ChannelError', 'ChannelNotFoundError',
|
||||
'ChannelEmptyError',
|
||||
]
|
||||
|
||||
|
||||
def create(*, isolated=True):
|
||||
"""
|
||||
Initialize a new (idle) Python interpreter.
|
||||
"""
|
||||
id = _interpreters.create(isolated=isolated)
|
||||
return Interpreter(id, isolated=isolated)
|
||||
|
||||
|
||||
def list_all():
|
||||
"""
|
||||
Get all existing interpreters.
|
||||
"""
|
||||
return [Interpreter(id) for id in
|
||||
_interpreters.list_all()]
|
||||
|
||||
|
||||
def get_current():
|
||||
"""
|
||||
Get the currently running interpreter.
|
||||
"""
|
||||
id = _interpreters.get_current()
|
||||
return Interpreter(id)
|
||||
|
||||
|
||||
def get_main():
|
||||
"""
|
||||
Get the main interpreter.
|
||||
"""
|
||||
id = _interpreters.get_main()
|
||||
return Interpreter(id)
|
||||
|
||||
|
||||
class Interpreter:
|
||||
"""
|
||||
The Interpreter object represents
|
||||
a single interpreter.
|
||||
"""
|
||||
|
||||
def __init__(self, id, *, isolated=None):
|
||||
self._id = id
|
||||
self._isolated = isolated
|
||||
|
||||
@property
|
||||
def id(self):
|
||||
return self._id
|
||||
|
||||
@property
|
||||
def isolated(self):
|
||||
if self._isolated is None:
|
||||
self._isolated = _interpreters.is_isolated(self._id)
|
||||
return self._isolated
|
||||
|
||||
def is_running(self):
|
||||
"""
|
||||
Return whether or not the identified
|
||||
interpreter is running.
|
||||
"""
|
||||
return _interpreters.is_running(self._id)
|
||||
|
||||
def close(self):
|
||||
"""
|
||||
Finalize and destroy the interpreter.
|
||||
|
||||
Attempting to destroy the current
|
||||
interpreter results in a RuntimeError.
|
||||
"""
|
||||
return _interpreters.destroy(self._id)
|
||||
|
||||
def run(self, src_str, /, *, channels=None):
|
||||
"""
|
||||
Run the given source code in the interpreter.
|
||||
This blocks the current Python thread until done.
|
||||
"""
|
||||
_interpreters.run_string(self._id, src_str)
|
||||
|
||||
|
||||
def create_channel():
|
||||
"""
|
||||
Create a new channel for passing data between
|
||||
interpreters.
|
||||
"""
|
||||
|
||||
cid = _interpreters.channel_create()
|
||||
return (RecvChannel(cid), SendChannel(cid))
|
||||
|
||||
|
||||
def list_all_channels():
|
||||
"""
|
||||
Get all open channels.
|
||||
"""
|
||||
return [(RecvChannel(cid), SendChannel(cid))
|
||||
for cid in _interpreters.channel_list_all()]
|
||||
|
||||
|
||||
_NOT_SET = object()
|
||||
|
||||
|
||||
class RecvChannel:
|
||||
"""
|
||||
The RecvChannel object represents
|
||||
a recieving channel.
|
||||
"""
|
||||
|
||||
def __init__(self, id):
|
||||
self._id = id
|
||||
|
||||
def recv(self, *, _delay=10 / 1000): # 10 milliseconds
|
||||
"""
|
||||
Get the next object from the channel,
|
||||
and wait if none have been sent.
|
||||
Associate the interpreter with the channel.
|
||||
"""
|
||||
import time
|
||||
sentinel = object()
|
||||
obj = _interpreters.channel_recv(self._id, sentinel)
|
||||
while obj is sentinel:
|
||||
time.sleep(_delay)
|
||||
obj = _interpreters.channel_recv(self._id, sentinel)
|
||||
return obj
|
||||
|
||||
def recv_nowait(self, default=_NOT_SET):
|
||||
"""
|
||||
Like recv(), but return the default
|
||||
instead of waiting.
|
||||
|
||||
This function is blocked by a missing low-level
|
||||
implementation of channel_recv_wait().
|
||||
"""
|
||||
if default is _NOT_SET:
|
||||
return _interpreters.channel_recv(self._id)
|
||||
else:
|
||||
return _interpreters.channel_recv(self._id, default)
|
||||
|
||||
|
||||
class SendChannel:
|
||||
"""
|
||||
The SendChannel object represents
|
||||
a sending channel.
|
||||
"""
|
||||
|
||||
def __init__(self, id):
|
||||
self._id = id
|
||||
|
||||
def send(self, obj):
|
||||
"""
|
||||
Send the object (i.e. its data) to the receiving
|
||||
end of the channel and wait. Associate the interpreter
|
||||
with the channel.
|
||||
"""
|
||||
import time
|
||||
_interpreters.channel_send(self._id, obj)
|
||||
time.sleep(2)
|
||||
|
||||
def send_nowait(self, obj):
|
||||
"""
|
||||
Like send(), but return False if not received.
|
||||
|
||||
This function is blocked by a missing low-level
|
||||
implementation of channel_send_wait().
|
||||
"""
|
||||
|
||||
_interpreters.channel_send(self._id, obj)
|
||||
return False
|
||||
|
|
@ -1,145 +0,0 @@
|
|||
High-level implementation of Subinterpreters
|
||||
============================================
|
||||
|
||||
**Source code:** :source:`Lib/test/support/_interpreters.py`
|
||||
|
||||
--------------
|
||||
|
||||
This module provides high-level tools for working with sub-interpreters,
|
||||
such as creating them, running code in them, or sending data between them.
|
||||
It is a wrapper around the low-level ``__xxsubinterpreters`` module.
|
||||
|
||||
.. versionchanged:: added in 3.9
|
||||
|
||||
Interpreter Objects
|
||||
-------------------
|
||||
|
||||
The ``Interpreter`` object represents a single interpreter.
|
||||
|
||||
.. class:: Interpreter(id)
|
||||
|
||||
The class implementing a subinterpreter object.
|
||||
|
||||
.. method:: is_running()
|
||||
|
||||
Return ``True`` if the identified interpreter is running.
|
||||
|
||||
.. method:: close()
|
||||
|
||||
Destroy the interpreter. Attempting to destroy the current
|
||||
interpreter results in a `RuntimeError`.
|
||||
|
||||
.. method:: run(self, src_str, /, *, channels=None):
|
||||
|
||||
Run the given source code in the interpreter. This blocks
|
||||
the current thread until done. ``channels`` should be in
|
||||
the form : `(RecvChannel, SendChannel)`.
|
||||
|
||||
RecvChannel Objects
|
||||
-------------------
|
||||
|
||||
The ``RecvChannel`` object represents a recieving channel.
|
||||
|
||||
.. class:: RecvChannel(id)
|
||||
|
||||
This class represents the receiving end of a channel.
|
||||
|
||||
.. method:: recv()
|
||||
|
||||
Get the next object from the channel, and wait if
|
||||
none have been sent. Associate the interpreter
|
||||
with the channel.
|
||||
|
||||
.. method:: recv_nowait(default=None)
|
||||
|
||||
Like ``recv()``, but return the default result
|
||||
instead of waiting.
|
||||
|
||||
|
||||
SendChannel Objects
|
||||
--------------------
|
||||
|
||||
The ``SendChannel`` object represents a sending channel.
|
||||
|
||||
.. class:: SendChannel(id)
|
||||
|
||||
This class represents the sending end of a channel.
|
||||
|
||||
.. method:: send(obj)
|
||||
|
||||
Send the object ``obj`` to the receiving end of the channel
|
||||
and wait. Associate the interpreter with the channel.
|
||||
|
||||
.. method:: send_nowait(obj)
|
||||
|
||||
Similar to ``send()``, but returns ``False`` if
|
||||
*obj* is not immediately received instead of blocking.
|
||||
|
||||
|
||||
This module defines the following global functions:
|
||||
|
||||
|
||||
.. function:: is_shareable(obj)
|
||||
|
||||
Return ``True`` if the object's data can be shared between
|
||||
interpreters.
|
||||
|
||||
.. function:: create_channel()
|
||||
|
||||
Create a new channel for passing data between interpreters.
|
||||
|
||||
.. function:: list_all_channels()
|
||||
|
||||
Return all open channels.
|
||||
|
||||
.. function:: create(*, isolated=True)
|
||||
|
||||
Initialize a new (idle) Python interpreter. Get the currently
|
||||
running interpreter. This method returns an ``Interpreter`` object.
|
||||
|
||||
.. function:: get_current()
|
||||
|
||||
Get the currently running interpreter. This method returns
|
||||
an ``Interpreter`` object.
|
||||
|
||||
.. function:: get_main()
|
||||
|
||||
Get the main interpreter. This method returns
|
||||
an ``Interpreter`` object.
|
||||
|
||||
.. function:: list_all()
|
||||
|
||||
Get all existing interpreters. Returns a list
|
||||
of ``Interpreter`` objects.
|
||||
|
||||
This module also defines the following exceptions.
|
||||
|
||||
.. exception:: RunFailedError
|
||||
|
||||
This exception, a subclass of :exc:`RuntimeError`, is raised when the
|
||||
``Interpreter.run()`` results in an uncaught exception.
|
||||
|
||||
.. exception:: ChannelError
|
||||
|
||||
This exception is a subclass of :exc:`Exception`, and is the base
|
||||
class for all channel-related exceptions.
|
||||
|
||||
.. exception:: ChannelNotFoundError
|
||||
|
||||
This exception is a subclass of :exc:`ChannelError`, and is raised
|
||||
when the identified channel is not found.
|
||||
|
||||
.. exception:: ChannelEmptyError
|
||||
|
||||
This exception is a subclass of :exc:`ChannelError`, and is raised when
|
||||
the channel is unexpectedly empty.
|
||||
|
||||
.. exception:: ChannelNotEmptyError
|
||||
|
||||
This exception is a subclass of :exc:`ChannelError`, and is raised when
|
||||
the channel is unexpectedly not empty.
|
||||
|
||||
.. exception:: NotReceivedError
|
||||
|
||||
This exception is a subclass of :exc:`ChannelError`, and is raised when
|
||||
nothing was waiting to receive a sent object.
|
||||
|
|
@ -1,535 +0,0 @@
|
|||
import contextlib
|
||||
import os
|
||||
import threading
|
||||
from textwrap import dedent
|
||||
import unittest
|
||||
import time
|
||||
|
||||
import _xxsubinterpreters as _interpreters
|
||||
from test.support import interpreters
|
||||
|
||||
|
||||
def _captured_script(script):
|
||||
r, w = os.pipe()
|
||||
indented = script.replace('\n', '\n ')
|
||||
wrapped = dedent(f"""
|
||||
import contextlib
|
||||
with open({w}, 'w') as spipe:
|
||||
with contextlib.redirect_stdout(spipe):
|
||||
{indented}
|
||||
""")
|
||||
return wrapped, open(r)
|
||||
|
||||
|
||||
def clean_up_interpreters():
|
||||
for interp in interpreters.list_all():
|
||||
if interp.id == 0: # main
|
||||
continue
|
||||
try:
|
||||
interp.close()
|
||||
except RuntimeError:
|
||||
pass # already destroyed
|
||||
|
||||
|
||||
def _run_output(interp, request, shared=None):
|
||||
script, rpipe = _captured_script(request)
|
||||
with rpipe:
|
||||
interp.run(script)
|
||||
return rpipe.read()
|
||||
|
||||
|
||||
@contextlib.contextmanager
|
||||
def _running(interp):
|
||||
r, w = os.pipe()
|
||||
def run():
|
||||
interp.run(dedent(f"""
|
||||
# wait for "signal"
|
||||
with open({r}) as rpipe:
|
||||
rpipe.read()
|
||||
"""))
|
||||
|
||||
t = threading.Thread(target=run)
|
||||
t.start()
|
||||
|
||||
yield
|
||||
|
||||
with open(w, 'w') as spipe:
|
||||
spipe.write('done')
|
||||
t.join()
|
||||
|
||||
|
||||
class TestBase(unittest.TestCase):
|
||||
|
||||
def tearDown(self):
|
||||
clean_up_interpreters()
|
||||
|
||||
|
||||
class CreateTests(TestBase):
|
||||
|
||||
def test_in_main(self):
|
||||
interp = interpreters.create()
|
||||
lst = interpreters.list_all()
|
||||
self.assertEqual(interp.id, lst[1].id)
|
||||
|
||||
def test_in_thread(self):
|
||||
lock = threading.Lock()
|
||||
id = None
|
||||
interp = interpreters.create()
|
||||
lst = interpreters.list_all()
|
||||
def f():
|
||||
nonlocal id
|
||||
id = interp.id
|
||||
lock.acquire()
|
||||
lock.release()
|
||||
|
||||
t = threading.Thread(target=f)
|
||||
with lock:
|
||||
t.start()
|
||||
t.join()
|
||||
self.assertEqual(interp.id, lst[1].id)
|
||||
|
||||
def test_in_subinterpreter(self):
|
||||
main, = interpreters.list_all()
|
||||
interp = interpreters.create()
|
||||
out = _run_output(interp, dedent("""
|
||||
from test.support import interpreters
|
||||
interp = interpreters.create()
|
||||
print(interp)
|
||||
"""))
|
||||
interp2 = out.strip()
|
||||
|
||||
self.assertEqual(len(set(interpreters.list_all())), len({main, interp, interp2}))
|
||||
|
||||
def test_after_destroy_all(self):
|
||||
before = set(interpreters.list_all())
|
||||
# Create 3 subinterpreters.
|
||||
interp_lst = []
|
||||
for _ in range(3):
|
||||
interps = interpreters.create()
|
||||
interp_lst.append(interps)
|
||||
# Now destroy them.
|
||||
for interp in interp_lst:
|
||||
interp.close()
|
||||
# Finally, create another.
|
||||
interp = interpreters.create()
|
||||
self.assertEqual(len(set(interpreters.list_all())), len(before | {interp}))
|
||||
|
||||
def test_after_destroy_some(self):
|
||||
before = set(interpreters.list_all())
|
||||
# Create 3 subinterpreters.
|
||||
interp1 = interpreters.create()
|
||||
interp2 = interpreters.create()
|
||||
interp3 = interpreters.create()
|
||||
# Now destroy 2 of them.
|
||||
interp1.close()
|
||||
interp2.close()
|
||||
# Finally, create another.
|
||||
interp = interpreters.create()
|
||||
self.assertEqual(len(set(interpreters.list_all())), len(before | {interp3, interp}))
|
||||
|
||||
|
||||
class GetCurrentTests(TestBase):
|
||||
|
||||
def test_main(self):
|
||||
main_interp_id = _interpreters.get_main()
|
||||
cur_interp_id = interpreters.get_current().id
|
||||
self.assertEqual(cur_interp_id, main_interp_id)
|
||||
|
||||
def test_subinterpreter(self):
|
||||
main = _interpreters.get_main()
|
||||
interp = interpreters.create()
|
||||
out = _run_output(interp, dedent("""
|
||||
from test.support import interpreters
|
||||
cur = interpreters.get_current()
|
||||
print(cur)
|
||||
"""))
|
||||
cur = out.strip()
|
||||
self.assertNotEqual(cur, main)
|
||||
|
||||
|
||||
class ListAllTests(TestBase):
|
||||
|
||||
def test_initial(self):
|
||||
interps = interpreters.list_all()
|
||||
self.assertEqual(1, len(interps))
|
||||
|
||||
def test_after_creating(self):
|
||||
main = interpreters.get_current()
|
||||
first = interpreters.create()
|
||||
second = interpreters.create()
|
||||
|
||||
ids = []
|
||||
for interp in interpreters.list_all():
|
||||
ids.append(interp.id)
|
||||
|
||||
self.assertEqual(ids, [main.id, first.id, second.id])
|
||||
|
||||
def test_after_destroying(self):
|
||||
main = interpreters.get_current()
|
||||
first = interpreters.create()
|
||||
second = interpreters.create()
|
||||
first.close()
|
||||
|
||||
ids = []
|
||||
for interp in interpreters.list_all():
|
||||
ids.append(interp.id)
|
||||
|
||||
self.assertEqual(ids, [main.id, second.id])
|
||||
|
||||
|
||||
class TestInterpreterId(TestBase):
|
||||
|
||||
def test_in_main(self):
|
||||
main = interpreters.get_current()
|
||||
self.assertEqual(0, main.id)
|
||||
|
||||
def test_with_custom_num(self):
|
||||
interp = interpreters.Interpreter(1)
|
||||
self.assertEqual(1, interp.id)
|
||||
|
||||
def test_for_readonly_property(self):
|
||||
interp = interpreters.Interpreter(1)
|
||||
with self.assertRaises(AttributeError):
|
||||
interp.id = 2
|
||||
|
||||
|
||||
class TestInterpreterIsRunning(TestBase):
|
||||
|
||||
def test_main(self):
|
||||
main = interpreters.get_current()
|
||||
self.assertTrue(main.is_running())
|
||||
|
||||
def test_subinterpreter(self):
|
||||
interp = interpreters.create()
|
||||
self.assertFalse(interp.is_running())
|
||||
|
||||
with _running(interp):
|
||||
self.assertTrue(interp.is_running())
|
||||
self.assertFalse(interp.is_running())
|
||||
|
||||
def test_from_subinterpreter(self):
|
||||
interp = interpreters.create()
|
||||
out = _run_output(interp, dedent(f"""
|
||||
import _xxsubinterpreters as _interpreters
|
||||
if _interpreters.is_running({interp.id}):
|
||||
print(True)
|
||||
else:
|
||||
print(False)
|
||||
"""))
|
||||
self.assertEqual(out.strip(), 'True')
|
||||
|
||||
def test_already_destroyed(self):
|
||||
interp = interpreters.create()
|
||||
interp.close()
|
||||
with self.assertRaises(RuntimeError):
|
||||
interp.is_running()
|
||||
|
||||
|
||||
class TestInterpreterDestroy(TestBase):
|
||||
|
||||
def test_basic(self):
|
||||
interp1 = interpreters.create()
|
||||
interp2 = interpreters.create()
|
||||
interp3 = interpreters.create()
|
||||
self.assertEqual(4, len(interpreters.list_all()))
|
||||
interp2.close()
|
||||
self.assertEqual(3, len(interpreters.list_all()))
|
||||
|
||||
def test_all(self):
|
||||
before = set(interpreters.list_all())
|
||||
interps = set()
|
||||
for _ in range(3):
|
||||
interp = interpreters.create()
|
||||
interps.add(interp)
|
||||
self.assertEqual(len(set(interpreters.list_all())), len(before | interps))
|
||||
for interp in interps:
|
||||
interp.close()
|
||||
self.assertEqual(len(set(interpreters.list_all())), len(before))
|
||||
|
||||
def test_main(self):
|
||||
main, = interpreters.list_all()
|
||||
with self.assertRaises(RuntimeError):
|
||||
main.close()
|
||||
|
||||
def f():
|
||||
with self.assertRaises(RuntimeError):
|
||||
main.close()
|
||||
|
||||
t = threading.Thread(target=f)
|
||||
t.start()
|
||||
t.join()
|
||||
|
||||
def test_already_destroyed(self):
|
||||
interp = interpreters.create()
|
||||
interp.close()
|
||||
with self.assertRaises(RuntimeError):
|
||||
interp.close()
|
||||
|
||||
def test_from_current(self):
|
||||
main, = interpreters.list_all()
|
||||
interp = interpreters.create()
|
||||
script = dedent(f"""
|
||||
from test.support import interpreters
|
||||
try:
|
||||
main = interpreters.get_current()
|
||||
main.close()
|
||||
except RuntimeError:
|
||||
pass
|
||||
""")
|
||||
|
||||
interp.run(script)
|
||||
self.assertEqual(len(set(interpreters.list_all())), len({main, interp}))
|
||||
|
||||
def test_from_sibling(self):
|
||||
main, = interpreters.list_all()
|
||||
interp1 = interpreters.create()
|
||||
script = dedent(f"""
|
||||
from test.support import interpreters
|
||||
interp2 = interpreters.create()
|
||||
interp2.close()
|
||||
""")
|
||||
interp1.run(script)
|
||||
|
||||
self.assertEqual(len(set(interpreters.list_all())), len({main, interp1}))
|
||||
|
||||
def test_from_other_thread(self):
|
||||
interp = interpreters.create()
|
||||
def f():
|
||||
interp.close()
|
||||
|
||||
t = threading.Thread(target=f)
|
||||
t.start()
|
||||
t.join()
|
||||
|
||||
def test_still_running(self):
|
||||
main, = interpreters.list_all()
|
||||
interp = interpreters.create()
|
||||
with _running(interp):
|
||||
with self.assertRaises(RuntimeError):
|
||||
interp.close()
|
||||
self.assertTrue(interp.is_running())
|
||||
|
||||
|
||||
class TestInterpreterRun(TestBase):
|
||||
|
||||
SCRIPT = dedent("""
|
||||
with open('{}', 'w') as out:
|
||||
out.write('{}')
|
||||
""")
|
||||
FILENAME = 'spam'
|
||||
|
||||
def setUp(self):
|
||||
super().setUp()
|
||||
self.interp = interpreters.create()
|
||||
self._fs = None
|
||||
|
||||
def tearDown(self):
|
||||
if self._fs is not None:
|
||||
self._fs.close()
|
||||
super().tearDown()
|
||||
|
||||
@property
|
||||
def fs(self):
|
||||
if self._fs is None:
|
||||
self._fs = FSFixture(self)
|
||||
return self._fs
|
||||
|
||||
def test_success(self):
|
||||
script, file = _captured_script('print("it worked!", end="")')
|
||||
with file:
|
||||
self.interp.run(script)
|
||||
out = file.read()
|
||||
|
||||
self.assertEqual(out, 'it worked!')
|
||||
|
||||
def test_in_thread(self):
|
||||
script, file = _captured_script('print("it worked!", end="")')
|
||||
with file:
|
||||
def f():
|
||||
self.interp.run(script)
|
||||
|
||||
t = threading.Thread(target=f)
|
||||
t.start()
|
||||
t.join()
|
||||
out = file.read()
|
||||
|
||||
self.assertEqual(out, 'it worked!')
|
||||
|
||||
@unittest.skipUnless(hasattr(os, 'fork'), "test needs os.fork()")
|
||||
def test_fork(self):
|
||||
import tempfile
|
||||
with tempfile.NamedTemporaryFile('w+') as file:
|
||||
file.write('')
|
||||
file.flush()
|
||||
|
||||
expected = 'spam spam spam spam spam'
|
||||
script = dedent(f"""
|
||||
import os
|
||||
try:
|
||||
os.fork()
|
||||
except RuntimeError:
|
||||
with open('{file.name}', 'w') as out:
|
||||
out.write('{expected}')
|
||||
""")
|
||||
self.interp.run(script)
|
||||
|
||||
file.seek(0)
|
||||
content = file.read()
|
||||
self.assertEqual(content, expected)
|
||||
|
||||
def test_already_running(self):
|
||||
with _running(self.interp):
|
||||
with self.assertRaises(RuntimeError):
|
||||
self.interp.run('print("spam")')
|
||||
|
||||
def test_bad_script(self):
|
||||
with self.assertRaises(TypeError):
|
||||
self.interp.run(10)
|
||||
|
||||
def test_bytes_for_script(self):
|
||||
with self.assertRaises(TypeError):
|
||||
self.interp.run(b'print("spam")')
|
||||
|
||||
|
||||
class TestIsShareable(TestBase):
|
||||
|
||||
def test_default_shareables(self):
|
||||
shareables = [
|
||||
# singletons
|
||||
None,
|
||||
# builtin objects
|
||||
b'spam',
|
||||
'spam',
|
||||
10,
|
||||
-10,
|
||||
]
|
||||
for obj in shareables:
|
||||
with self.subTest(obj):
|
||||
self.assertTrue(
|
||||
interpreters.is_shareable(obj))
|
||||
|
||||
def test_not_shareable(self):
|
||||
class Cheese:
|
||||
def __init__(self, name):
|
||||
self.name = name
|
||||
def __str__(self):
|
||||
return self.name
|
||||
|
||||
class SubBytes(bytes):
|
||||
"""A subclass of a shareable type."""
|
||||
|
||||
not_shareables = [
|
||||
# singletons
|
||||
True,
|
||||
False,
|
||||
NotImplemented,
|
||||
...,
|
||||
# builtin types and objects
|
||||
type,
|
||||
object,
|
||||
object(),
|
||||
Exception(),
|
||||
100.0,
|
||||
# user-defined types and objects
|
||||
Cheese,
|
||||
Cheese('Wensleydale'),
|
||||
SubBytes(b'spam'),
|
||||
]
|
||||
for obj in not_shareables:
|
||||
with self.subTest(repr(obj)):
|
||||
self.assertFalse(
|
||||
interpreters.is_shareable(obj))
|
||||
|
||||
|
||||
class TestChannel(TestBase):
|
||||
|
||||
def test_create_cid(self):
|
||||
r, s = interpreters.create_channel()
|
||||
self.assertIsInstance(r, interpreters.RecvChannel)
|
||||
self.assertIsInstance(s, interpreters.SendChannel)
|
||||
|
||||
def test_sequential_ids(self):
|
||||
before = interpreters.list_all_channels()
|
||||
channels1 = interpreters.create_channel()
|
||||
channels2 = interpreters.create_channel()
|
||||
channels3 = interpreters.create_channel()
|
||||
after = interpreters.list_all_channels()
|
||||
|
||||
self.assertEqual(len(set(after) - set(before)),
|
||||
len({channels1, channels2, channels3}))
|
||||
|
||||
|
||||
class TestSendRecv(TestBase):
|
||||
|
||||
def test_send_recv_main(self):
|
||||
r, s = interpreters.create_channel()
|
||||
orig = b'spam'
|
||||
s.send(orig)
|
||||
obj = r.recv()
|
||||
|
||||
self.assertEqual(obj, orig)
|
||||
self.assertIsNot(obj, orig)
|
||||
|
||||
def test_send_recv_same_interpreter(self):
|
||||
interp = interpreters.create()
|
||||
out = _run_output(interp, dedent("""
|
||||
from test.support import interpreters
|
||||
r, s = interpreters.create_channel()
|
||||
orig = b'spam'
|
||||
s.send(orig)
|
||||
obj = r.recv()
|
||||
assert obj is not orig
|
||||
assert obj == orig
|
||||
"""))
|
||||
|
||||
def test_send_recv_different_threads(self):
|
||||
r, s = interpreters.create_channel()
|
||||
|
||||
def f():
|
||||
while True:
|
||||
try:
|
||||
obj = r.recv()
|
||||
break
|
||||
except interpreters.ChannelEmptyError:
|
||||
time.sleep(0.1)
|
||||
s.send(obj)
|
||||
t = threading.Thread(target=f)
|
||||
t.start()
|
||||
|
||||
s.send(b'spam')
|
||||
t.join()
|
||||
obj = r.recv()
|
||||
|
||||
self.assertEqual(obj, b'spam')
|
||||
|
||||
def test_send_recv_nowait_main(self):
|
||||
r, s = interpreters.create_channel()
|
||||
orig = b'spam'
|
||||
s.send(orig)
|
||||
obj = r.recv_nowait()
|
||||
|
||||
self.assertEqual(obj, orig)
|
||||
self.assertIsNot(obj, orig)
|
||||
|
||||
def test_send_recv_nowait_same_interpreter(self):
|
||||
interp = interpreters.create()
|
||||
out = _run_output(interp, dedent("""
|
||||
from test.support import interpreters
|
||||
r, s = interpreters.create_channel()
|
||||
orig = b'spam'
|
||||
s.send(orig)
|
||||
obj = r.recv_nowait()
|
||||
assert obj is not orig
|
||||
assert obj == orig
|
||||
"""))
|
||||
|
||||
r, s = interpreters.create_channel()
|
||||
|
||||
def f():
|
||||
while True:
|
||||
try:
|
||||
obj = r.recv_nowait()
|
||||
break
|
||||
except _interpreters.ChannelEmptyError:
|
||||
time.sleep(0.1)
|
||||
s.send(obj)
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
PEP 554 for use in the test suite.
|
||||
(Patch By Joannah Nanjekye)
|
||||
Loading…
Add table
Add a link
Reference in a new issue