| import contextlib |
| import os |
| import pickle |
| import signal |
| import sys |
| from textwrap import dedent |
| import threading |
| import types |
| import unittest |
| |
| from test import support |
| from test.support import os_helper |
| from test.support import script_helper |
| from test.support import import_helper |
| from test.support.script_helper import assert_python_ok, spawn_python |
| # Raise SkipTest if subinterpreters not supported. |
| _interpreters = import_helper.import_module('_interpreters') |
| from concurrent import interpreters |
| from test.support import Py_GIL_DISABLED |
| from test.support import force_not_colorized |
| import test._crossinterp_definitions as defs |
| from concurrent.interpreters import ( |
| InterpreterError, InterpreterNotFoundError, ExecutionFailed, |
| ) |
| from .utils import ( |
| _captured_script, _run_output, _running, TestBase, |
| requires_test_modules, _testinternalcapi, |
| ) |
| |
| |
| WHENCE_STR_UNKNOWN = 'unknown' |
| WHENCE_STR_RUNTIME = 'runtime init' |
| WHENCE_STR_LEGACY_CAPI = 'legacy C-API' |
| WHENCE_STR_CAPI = 'C-API' |
| WHENCE_STR_XI = 'cross-interpreter C-API' |
| WHENCE_STR_STDLIB = '_interpreters module' |
| |
| |
| def is_pickleable(obj): |
| try: |
| pickle.dumps(obj) |
| except Exception: |
| return False |
| return True |
| |
| |
| @contextlib.contextmanager |
| def defined_in___main__(name, script, *, remove=False): |
| import __main__ as mainmod |
| mainns = vars(mainmod) |
| assert name not in mainns |
| exec(script, mainns, mainns) |
| if remove: |
| yield mainns.pop(name) |
| else: |
| try: |
| yield mainns[name] |
| finally: |
| mainns.pop(name, None) |
| |
| |
| def build_excinfo(exctype, msg=None, formatted=None, errdisplay=None): |
| if isinstance(exctype, type): |
| assert issubclass(exctype, BaseException), exctype |
| exctype = types.SimpleNamespace( |
| __name__=exctype.__name__, |
| __qualname__=exctype.__qualname__, |
| __module__=exctype.__module__, |
| ) |
| elif isinstance(exctype, str): |
| module, _, name = exctype.rpartition(exctype) |
| if not module and name in __builtins__: |
| module = 'builtins' |
| exctype = types.SimpleNamespace( |
| __name__=name, |
| __qualname__=exctype, |
| __module__=module or None, |
| ) |
| else: |
| assert isinstance(exctype, types.SimpleNamespace) |
| assert msg is None or isinstance(msg, str), msg |
| assert formatted is None or isinstance(formatted, str), formatted |
| assert errdisplay is None or isinstance(errdisplay, str), errdisplay |
| return types.SimpleNamespace( |
| type=exctype, |
| msg=msg, |
| formatted=formatted, |
| errdisplay=errdisplay, |
| ) |
| |
| |
| class ModuleTests(TestBase): |
| |
| def test_queue_aliases(self): |
| first = [ |
| interpreters.create_queue, |
| interpreters.Queue, |
| interpreters.QueueEmpty, |
| interpreters.QueueFull, |
| ] |
| second = [ |
| interpreters.create_queue, |
| interpreters.Queue, |
| interpreters.QueueEmpty, |
| interpreters.QueueFull, |
| ] |
| self.assertEqual(second, first) |
| |
| |
| class CreateTests(TestBase): |
| |
| def test_in_main(self): |
| interp = interpreters.create() |
| self.assertIsInstance(interp, interpreters.Interpreter) |
| self.assertIn(interp, interpreters.list_all()) |
| |
| # GH-126221: Passing an invalid Unicode character used to cause a SystemError |
| self.assertRaises(UnicodeEncodeError, _interpreters.create, '\udc80') |
| |
| def test_in_thread(self): |
| lock = threading.Lock() |
| interp = None |
| def f(): |
| nonlocal interp |
| interp = interpreters.create() |
| lock.acquire() |
| lock.release() |
| t = threading.Thread(target=f) |
| with lock: |
| t.start() |
| t.join() |
| self.assertIn(interp, interpreters.list_all()) |
| |
| def test_in_subinterpreter(self): |
| main, = interpreters.list_all() |
| interp = interpreters.create() |
| out = _run_output(interp, dedent(""" |
| from concurrent import interpreters |
| interp = interpreters.create() |
| print(interp.id) |
| """)) |
| interp2 = interpreters.Interpreter(int(out)) |
| self.assertEqual(interpreters.list_all(), [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(set(interpreters.list_all()), 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(set(interpreters.list_all()), before | {interp3, interp}) |
| |
| |
| class GetMainTests(TestBase): |
| |
| def test_id(self): |
| main = interpreters.get_main() |
| self.assertEqual(main.id, 0) |
| |
| def test_current(self): |
| main = interpreters.get_main() |
| current = interpreters.get_current() |
| self.assertIs(main, current) |
| |
| def test_idempotent(self): |
| main1 = interpreters.get_main() |
| main2 = interpreters.get_main() |
| self.assertIs(main1, main2) |
| |
| |
| class GetCurrentTests(TestBase): |
| |
| def test_main(self): |
| main = interpreters.get_main() |
| current = interpreters.get_current() |
| self.assertEqual(current, main) |
| |
| def test_subinterpreter(self): |
| main = interpreters.get_main() |
| interp = interpreters.create() |
| out = _run_output(interp, dedent(""" |
| from concurrent import interpreters |
| cur = interpreters.get_current() |
| print(cur.id) |
| """)) |
| current = interpreters.Interpreter(int(out)) |
| self.assertEqual(current, interp) |
| self.assertNotEqual(current, main) |
| |
| def test_idempotent(self): |
| with self.subTest('main'): |
| cur1 = interpreters.get_current() |
| cur2 = interpreters.get_current() |
| self.assertIs(cur1, cur2) |
| |
| with self.subTest('subinterpreter'): |
| interp = interpreters.create() |
| out = _run_output(interp, dedent(""" |
| from concurrent import interpreters |
| cur = interpreters.get_current() |
| print(id(cur)) |
| cur = interpreters.get_current() |
| print(id(cur)) |
| """)) |
| objid1, objid2 = (int(v) for v in out.splitlines()) |
| self.assertEqual(objid1, objid2) |
| |
| with self.subTest('per-interpreter'): |
| interp = interpreters.create() |
| out = _run_output(interp, dedent(""" |
| from concurrent import interpreters |
| cur = interpreters.get_current() |
| print(id(cur)) |
| """)) |
| id1 = int(out) |
| id2 = id(interp) |
| self.assertNotEqual(id1, id2) |
| |
| @requires_test_modules |
| def test_created_with_capi(self): |
| expected = _testinternalcapi.next_interpreter_id() |
| text = self.run_temp_from_capi(f""" |
| import {interpreters.__name__} as interpreters |
| interp = interpreters.get_current() |
| print((interp.id, interp.whence)) |
| """) |
| interpid, whence = eval(text) |
| self.assertEqual(interpid, expected) |
| self.assertEqual(whence, WHENCE_STR_CAPI) |
| |
| |
| 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]) |
| |
| def test_idempotent(self): |
| main = interpreters.get_current() |
| first = interpreters.create() |
| second = interpreters.create() |
| expected = [main, first, second] |
| |
| actual = interpreters.list_all() |
| |
| self.assertEqual(actual, expected) |
| for interp1, interp2 in zip(actual, expected): |
| self.assertIs(interp1, interp2) |
| |
| def test_created_with_capi(self): |
| mainid, *_ = _interpreters.get_main() |
| interpid1 = _interpreters.create() |
| interpid2 = _interpreters.create() |
| interpid3 = _interpreters.create() |
| interpid4 = interpid3 + 1 |
| interpid5 = interpid4 + 1 |
| expected = [ |
| (mainid, WHENCE_STR_RUNTIME), |
| (interpid1, WHENCE_STR_STDLIB), |
| (interpid2, WHENCE_STR_STDLIB), |
| (interpid3, WHENCE_STR_STDLIB), |
| (interpid4, WHENCE_STR_CAPI), |
| (interpid5, WHENCE_STR_STDLIB), |
| ] |
| expected2 = expected[:-2] |
| text = self.run_temp_from_capi(f""" |
| import {interpreters.__name__} as interpreters |
| interp = interpreters.create() |
| print( |
| [(i.id, i.whence) for i in interpreters.list_all()]) |
| """) |
| res = eval(text) |
| res2 = [(i.id, i.whence) for i in interpreters.list_all()] |
| self.assertEqual(res, expected) |
| self.assertEqual(res2, expected2) |
| |
| |
| class InterpreterObjectTests(TestBase): |
| |
| def test_init_int(self): |
| interpid = interpreters.get_current().id |
| interp = interpreters.Interpreter(interpid) |
| self.assertEqual(interp.id, interpid) |
| |
| def test_init_interpreter_id(self): |
| interpid = interpreters.get_current()._id |
| interp = interpreters.Interpreter(interpid) |
| self.assertEqual(interp._id, interpid) |
| |
| def test_init_unsupported(self): |
| actualid = interpreters.get_current().id |
| for interpid in [ |
| str(actualid), |
| float(actualid), |
| object(), |
| None, |
| '', |
| ]: |
| with self.subTest(repr(interpid)): |
| with self.assertRaises(TypeError): |
| interpreters.Interpreter(interpid) |
| |
| def test_idempotent(self): |
| main = interpreters.get_main() |
| interp = interpreters.Interpreter(main.id) |
| self.assertIs(interp, main) |
| |
| def test_init_does_not_exist(self): |
| with self.assertRaises(InterpreterNotFoundError): |
| interpreters.Interpreter(1_000_000) |
| |
| def test_init_bad_id(self): |
| with self.assertRaises(ValueError): |
| interpreters.Interpreter(-1) |
| |
| def test_id_type(self): |
| main = interpreters.get_main() |
| current = interpreters.get_current() |
| interp = interpreters.create() |
| self.assertIsInstance(main.id, int) |
| self.assertIsInstance(current.id, int) |
| self.assertIsInstance(interp.id, int) |
| |
| def test_id_readonly(self): |
| interp = interpreters.create() |
| with self.assertRaises(AttributeError): |
| interp.id = 1_000_000 |
| |
| def test_whence(self): |
| main = interpreters.get_main() |
| interp = interpreters.create() |
| |
| with self.subTest('main'): |
| self.assertEqual(main.whence, WHENCE_STR_RUNTIME) |
| |
| with self.subTest('from _interpreters'): |
| self.assertEqual(interp.whence, WHENCE_STR_STDLIB) |
| |
| with self.subTest('from C-API'): |
| text = self.run_temp_from_capi(f""" |
| import {interpreters.__name__} as interpreters |
| interp = interpreters.get_current() |
| print(repr(interp.whence)) |
| """) |
| whence = eval(text) |
| self.assertEqual(whence, WHENCE_STR_CAPI) |
| |
| with self.subTest('readonly'): |
| for value in [ |
| None, |
| WHENCE_STR_UNKNOWN, |
| WHENCE_STR_RUNTIME, |
| WHENCE_STR_STDLIB, |
| WHENCE_STR_CAPI, |
| ]: |
| with self.assertRaises(AttributeError): |
| interp.whence = value |
| with self.assertRaises(AttributeError): |
| main.whence = value |
| |
| def test_hashable(self): |
| interp = interpreters.create() |
| expected = hash(interp.id) |
| actual = hash(interp) |
| self.assertEqual(actual, expected) |
| |
| def test_equality(self): |
| interp1 = interpreters.create() |
| interp2 = interpreters.create() |
| self.assertEqual(interp1, interp1) |
| self.assertNotEqual(interp1, interp2) |
| |
| def test_pickle(self): |
| interp = interpreters.create() |
| for protocol in range(pickle.HIGHEST_PROTOCOL + 1): |
| with self.subTest(protocol=protocol): |
| data = pickle.dumps(interp, protocol) |
| unpickled = pickle.loads(data) |
| self.assertEqual(unpickled, interp) |
| |
| @support.requires_subprocess() |
| @force_not_colorized |
| def test_cleanup_in_repl(self): |
| # GH-135729: Using a subinterpreter in the REPL would lead to an unraisable |
| # exception during finalization |
| repl = script_helper.spawn_python("-i") |
| script = b"""if True: |
| from concurrent import interpreters |
| interpreters.create() |
| exit()""" |
| stdout, stderr = repl.communicate(script) |
| self.assertIsNone(stderr) |
| self.assertIn(b"Interpreter.close()", stdout) |
| self.assertNotIn(b"Traceback", stdout) |
| |
| @support.requires_subprocess() |
| @unittest.skipIf(os.name == 'nt', "signals don't work well on windows") |
| def test_keyboard_interrupt_in_thread_running_interp(self): |
| import subprocess |
| source = f"""if True: |
| from concurrent import interpreters |
| from threading import Thread |
| |
| def test(): |
| import time |
| print('a', flush=True, end='') |
| time.sleep(10) |
| |
| interp = interpreters.create() |
| interp.call_in_thread(test) |
| """ |
| |
| with spawn_python("-c", source, stderr=subprocess.PIPE) as proc: |
| self.assertEqual(proc.stdout.read(1), b'a') |
| proc.send_signal(signal.SIGINT) |
| proc.stderr.flush() |
| error = proc.stderr.read() |
| self.assertIn(b"KeyboardInterrupt", error) |
| retcode = proc.wait() |
| # Sometimes we send the SIGINT after the subthread yields the GIL to |
| # the main thread, which results in the main thread getting the |
| # KeyboardInterrupt before finalization is reached. There's not |
| # any great way to protect against that, so we just allow a -2 |
| # return code as well. |
| self.assertIn(retcode, (0, -signal.SIGINT)) |
| |
| |
| class TestInterpreterIsRunning(TestBase): |
| |
| def test_main(self): |
| main = interpreters.get_main() |
| self.assertTrue(main.is_running()) |
| |
| # XXX Is this still true? |
| @unittest.skip('Fails on FreeBSD') |
| 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_finished(self): |
| r, w = self.pipe() |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| os.write({w}, b'x') |
| """) |
| self.assertFalse(interp.is_running()) |
| self.assertEqual(os.read(r, 1), b'x') |
| |
| def test_from_subinterpreter(self): |
| interp = interpreters.create() |
| out = _run_output(interp, dedent(f""" |
| import _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(InterpreterNotFoundError): |
| interp.is_running() |
| |
| def test_with_only_background_threads(self): |
| r_interp, w_interp = self.pipe() |
| r_thread, w_thread = self.pipe() |
| |
| DONE = b'D' |
| FINISHED = b'F' |
| |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| import threading |
| |
| def task(): |
| v = os.read({r_thread}, 1) |
| assert v == {DONE!r} |
| os.write({w_interp}, {FINISHED!r}) |
| t = threading.Thread(target=task) |
| t.start() |
| """) |
| self.assertFalse(interp.is_running()) |
| |
| os.write(w_thread, DONE) |
| interp.exec('t.join()') |
| self.assertEqual(os.read(r_interp, 1), FINISHED) |
| |
| def test_created_with_capi(self): |
| script = dedent(f""" |
| import {interpreters.__name__} as interpreters |
| interp = interpreters.get_current() |
| print(interp.is_running()) |
| """) |
| def parse_results(text): |
| self.assertNotEqual(text, "") |
| try: |
| return eval(text) |
| except Exception: |
| raise Exception(repr(text)) |
| |
| with self.subTest('running __main__ (from self)'): |
| with self.interpreter_from_capi() as interpid: |
| text = self.run_from_capi(interpid, script, main=True) |
| running = parse_results(text) |
| self.assertTrue(running) |
| |
| with self.subTest('running, but not __main__ (from self)'): |
| text = self.run_temp_from_capi(script) |
| running = parse_results(text) |
| self.assertFalse(running) |
| |
| with self.subTest('running __main__ (from other)'): |
| with self.interpreter_obj_from_capi() as (interp, interpid): |
| before = interp.is_running() |
| with self.running_from_capi(interpid, main=True): |
| during = interp.is_running() |
| after = interp.is_running() |
| self.assertFalse(before) |
| self.assertTrue(during) |
| self.assertFalse(after) |
| |
| with self.subTest('running, but not __main__ (from other)'): |
| with self.interpreter_obj_from_capi() as (interp, interpid): |
| before = interp.is_running() |
| with self.running_from_capi(interpid, main=False): |
| during = interp.is_running() |
| after = interp.is_running() |
| self.assertFalse(before) |
| self.assertFalse(during) |
| self.assertFalse(after) |
| |
| with self.subTest('not running (from other)'): |
| with self.interpreter_obj_from_capi() as (interp, _): |
| running = interp.is_running() |
| self.assertFalse(running) |
| |
| |
| class TestInterpreterClose(TestBase): |
| |
| def test_basic(self): |
| main = interpreters.get_main() |
| interp1 = interpreters.create() |
| interp2 = interpreters.create() |
| interp3 = interpreters.create() |
| self.assertEqual(set(interpreters.list_all()), |
| {main, interp1, interp2, interp3}) |
| interp2.close() |
| self.assertEqual(set(interpreters.list_all()), |
| {main, interp1, interp3}) |
| |
| def test_all(self): |
| before = set(interpreters.list_all()) |
| interps = set() |
| for _ in range(3): |
| interp = interpreters.create() |
| interps.add(interp) |
| self.assertEqual(set(interpreters.list_all()), before | interps) |
| for interp in interps: |
| interp.close() |
| self.assertEqual(set(interpreters.list_all()), before) |
| |
| def test_main(self): |
| main, = interpreters.list_all() |
| with self.assertRaises(InterpreterError): |
| main.close() |
| |
| def f(): |
| with self.assertRaises(InterpreterError): |
| main.close() |
| |
| t = threading.Thread(target=f) |
| t.start() |
| t.join() |
| |
| def test_already_destroyed(self): |
| interp = interpreters.create() |
| interp.close() |
| with self.assertRaises(InterpreterNotFoundError): |
| interp.close() |
| |
| def test_from_current(self): |
| main, = interpreters.list_all() |
| interp = interpreters.create() |
| out = _run_output(interp, dedent(f""" |
| from concurrent import interpreters |
| interp = interpreters.Interpreter({interp.id}) |
| try: |
| interp.close() |
| except interpreters.InterpreterError: |
| print('failed') |
| """)) |
| self.assertEqual(out.strip(), 'failed') |
| self.assertEqual(set(interpreters.list_all()), {main, interp}) |
| |
| def test_from_sibling(self): |
| main, = interpreters.list_all() |
| interp1 = interpreters.create() |
| interp2 = interpreters.create() |
| self.assertEqual(set(interpreters.list_all()), |
| {main, interp1, interp2}) |
| interp1.exec(dedent(f""" |
| from concurrent import interpreters |
| interp2 = interpreters.Interpreter({interp2.id}) |
| interp2.close() |
| interp3 = interpreters.create() |
| interp3.close() |
| """)) |
| self.assertEqual(set(interpreters.list_all()), {main, interp1}) |
| |
| def test_from_other_thread(self): |
| interp = interpreters.create() |
| def f(): |
| interp.close() |
| |
| t = threading.Thread(target=f) |
| t.start() |
| t.join() |
| |
| # XXX Is this still true? |
| @unittest.skip('Fails on FreeBSD') |
| def test_still_running(self): |
| main, = interpreters.list_all() |
| interp = interpreters.create() |
| with _running(interp): |
| with self.assertRaises(InterpreterError): |
| interp.close() |
| self.assertTrue(interp.is_running()) |
| |
| def test_subthreads_still_running(self): |
| r_interp, w_interp = self.pipe() |
| r_thread, w_thread = self.pipe() |
| |
| FINISHED = b'F' |
| |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| import threading |
| import time |
| |
| done = False |
| |
| def notify_fini(): |
| global done |
| done = True |
| t.join() |
| threading._register_atexit(notify_fini) |
| |
| def task(): |
| while not done: |
| time.sleep(0.1) |
| os.write({w_interp}, {FINISHED!r}) |
| t = threading.Thread(target=task) |
| t.start() |
| """) |
| interp.close() |
| |
| self.assertEqual(os.read(r_interp, 1), FINISHED) |
| |
| def test_created_with_capi(self): |
| script = dedent(f""" |
| import {interpreters.__name__} as interpreters |
| interp = interpreters.get_current() |
| interp.close() |
| """) |
| |
| with self.subTest('running __main__ (from self)'): |
| with self.interpreter_from_capi() as interpid: |
| with self.assertRaisesRegex(ExecutionFailed, |
| 'InterpreterError.*unrecognized'): |
| self.run_from_capi(interpid, script, main=True) |
| |
| with self.subTest('running, but not __main__ (from self)'): |
| with self.assertRaisesRegex(ExecutionFailed, |
| 'InterpreterError.*unrecognized'): |
| self.run_temp_from_capi(script) |
| |
| with self.subTest('running __main__ (from other)'): |
| with self.interpreter_obj_from_capi() as (interp, interpid): |
| with self.running_from_capi(interpid, main=True): |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| interp.close() |
| # Make sure it wssn't closed. |
| self.assertTrue( |
| self.interp_exists(interpid)) |
| |
| # The rest would be skipped until we deal with running threads when |
| # interp.close() is called. However, the "whence" restrictions |
| # trigger first. |
| |
| with self.subTest('running, but not __main__ (from other)'): |
| with self.interpreter_obj_from_capi() as (interp, interpid): |
| with self.running_from_capi(interpid, main=False): |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| interp.close() |
| # Make sure it wssn't closed. |
| self.assertTrue( |
| self.interp_exists(interpid)) |
| |
| with self.subTest('not running (from other)'): |
| with self.interpreter_obj_from_capi() as (interp, interpid): |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| interp.close() |
| self.assertTrue( |
| self.interp_exists(interpid)) |
| |
| |
| def test_remaining_threads(self): |
| r_interp, w_interp = self.pipe() |
| |
| FINISHED = b'F' |
| |
| # It's unlikely, but technically speaking, it's possible |
| # that the thread could've finished before interp.close() is |
| # reached, so this test might not properly exercise the case. |
| # However, it's quite unlikely and probably not worth bothering about. |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| import threading |
| import time |
| |
| def task(): |
| time.sleep(1) |
| os.write({w_interp}, {FINISHED!r}) |
| |
| threads = (threading.Thread(target=task) for _ in range(3)) |
| for t in threads: |
| t.start() |
| """) |
| interp.close() |
| |
| self.assertEqual(os.read(r_interp, 1), FINISHED) |
| |
| def test_remaining_daemon_threads(self): |
| # Daemon threads leak reference by nature, because they hang threads |
| # without allowing them to do cleanup (i.e., release refs). |
| # To prevent that from messing up the refleak hunter and whatnot, we |
| # run this in a subprocess. |
| code = '''if True: |
| import _interpreters |
| import types |
| interp = _interpreters.create( |
| types.SimpleNamespace( |
| use_main_obmalloc=False, |
| allow_fork=False, |
| allow_exec=False, |
| allow_threads=True, |
| allow_daemon_threads=True, |
| check_multi_interp_extensions=True, |
| gil='own', |
| ) |
| ) |
| _interpreters.exec(interp, f"""if True: |
| import threading |
| import time |
| |
| def task(): |
| time.sleep(3) |
| |
| threads = (threading.Thread(target=task, daemon=True) for _ in range(3)) |
| for t in threads: |
| t.start() |
| """) |
| _interpreters.destroy(interp) |
| ''' |
| assert_python_ok('-c', code) |
| |
| |
| class TestInterpreterPrepareMain(TestBase): |
| |
| def test_empty(self): |
| interp = interpreters.create() |
| with self.assertRaises(ValueError): |
| interp.prepare_main() |
| |
| def test_dict(self): |
| values = {'spam': 42, 'eggs': 'ham'} |
| interp = interpreters.create() |
| interp.prepare_main(values) |
| out = _run_output(interp, dedent(""" |
| print(spam, eggs) |
| """)) |
| self.assertEqual(out.strip(), '42 ham') |
| |
| def test_tuple(self): |
| values = {'spam': 42, 'eggs': 'ham'} |
| values = tuple(values.items()) |
| interp = interpreters.create() |
| interp.prepare_main(values) |
| out = _run_output(interp, dedent(""" |
| print(spam, eggs) |
| """)) |
| self.assertEqual(out.strip(), '42 ham') |
| |
| def test_kwargs(self): |
| values = {'spam': 42, 'eggs': 'ham'} |
| interp = interpreters.create() |
| interp.prepare_main(**values) |
| out = _run_output(interp, dedent(""" |
| print(spam, eggs) |
| """)) |
| self.assertEqual(out.strip(), '42 ham') |
| |
| def test_dict_and_kwargs(self): |
| values = {'spam': 42, 'eggs': 'ham'} |
| interp = interpreters.create() |
| interp.prepare_main(values, foo='bar') |
| out = _run_output(interp, dedent(""" |
| print(spam, eggs, foo) |
| """)) |
| self.assertEqual(out.strip(), '42 ham bar') |
| |
| def test_not_shareable(self): |
| interp = interpreters.create() |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.prepare_main(spam={'spam': 'eggs', 'foo': 'bar'}) |
| |
| # Make sure neither was actually bound. |
| with self.assertRaises(ExecutionFailed): |
| interp.exec('print(foo)') |
| with self.assertRaises(ExecutionFailed): |
| interp.exec('print(spam)') |
| |
| def test_running(self): |
| interp = interpreters.create() |
| interp.prepare_main({'spam': True}) |
| with self.running(interp): |
| with self.assertRaisesRegex(InterpreterError, 'running'): |
| interp.prepare_main({'spam': False}) |
| interp.exec('assert spam is True') |
| |
| @requires_test_modules |
| def test_created_with_capi(self): |
| with self.interpreter_obj_from_capi() as (interp, interpid): |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| interp.prepare_main({'spam': True}) |
| with self.assertRaisesRegex(ExecutionFailed, 'NameError'): |
| self.run_from_capi(interpid, 'assert spam is True') |
| |
| |
| class TestInterpreterExec(TestBase): |
| |
| def test_success(self): |
| interp = interpreters.create() |
| script, results = _captured_script('print("it worked!", end="")') |
| with results: |
| interp.exec(script) |
| results = results.final() |
| results.raise_if_failed() |
| out = results.stdout |
| |
| self.assertEqual(out, 'it worked!') |
| |
| def test_failure(self): |
| interp = interpreters.create() |
| with self.assertRaises(ExecutionFailed): |
| interp.exec('raise Exception') |
| |
| @force_not_colorized |
| def test_display_preserved_exception(self): |
| tempdir = self.temp_dir() |
| modfile = self.make_module('spam', tempdir, text=""" |
| def ham(): |
| raise RuntimeError('uh-oh!') |
| |
| def eggs(): |
| ham() |
| """) |
| scriptfile = self.make_script('script.py', tempdir, text=""" |
| from concurrent import interpreters |
| |
| def script(): |
| import spam |
| spam.eggs() |
| |
| interp = interpreters.create() |
| try: |
| interp.exec(script) |
| finally: |
| interp.close() |
| """) |
| |
| stdout, stderr = self.assert_python_failure(scriptfile) |
| self.maxDiff = None |
| interpmod_line, = (l for l in stderr.splitlines() if ' exec' in l) |
| # File "{interpreters.__file__}", line 179, in exec |
| self.assertEqual(stderr, dedent(f"""\ |
| Traceback (most recent call last): |
| File "{scriptfile}", line 10, in <module> |
| interp.exec(script) |
| ~~~~~~~~~~~^^^^^^^^ |
| {interpmod_line.strip()} |
| raise ExecutionFailed(excinfo) |
| concurrent.interpreters.ExecutionFailed: RuntimeError: uh-oh! |
| |
| Uncaught in the interpreter: |
| |
| Traceback (most recent call last): |
| File "{scriptfile}", line 6, in script |
| spam.eggs() |
| ~~~~~~~~~^^ |
| File "{modfile}", line 6, in eggs |
| ham() |
| ~~~^^ |
| File "{modfile}", line 3, in ham |
| raise RuntimeError('uh-oh!') |
| RuntimeError: uh-oh! |
| """)) |
| self.assertEqual(stdout, '') |
| |
| def test_in_thread(self): |
| interp = interpreters.create() |
| script, results = _captured_script('print("it worked!", end="")') |
| with results: |
| def f(): |
| interp.exec(script) |
| |
| t = threading.Thread(target=f) |
| t.start() |
| t.join() |
| results = results.final() |
| results.raise_if_failed() |
| out = results.stdout |
| |
| self.assertEqual(out, 'it worked!') |
| |
| @support.requires_fork() |
| def test_fork(self): |
| interp = interpreters.create() |
| import tempfile |
| with tempfile.NamedTemporaryFile('w+', encoding='utf-8') 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', encoding='utf-8') as out: |
| out.write('{expected}') |
| """) |
| interp.exec(script) |
| |
| file.seek(0) |
| content = file.read() |
| self.assertEqual(content, expected) |
| |
| # XXX Is this still true? |
| @unittest.skip('Fails on FreeBSD') |
| def test_already_running(self): |
| interp = interpreters.create() |
| with _running(interp): |
| with self.assertRaises(RuntimeError): |
| interp.exec('print("spam")') |
| |
| def test_bad_script(self): |
| interp = interpreters.create() |
| with self.assertRaises(TypeError): |
| interp.exec(10) |
| |
| def test_bytes_for_script(self): |
| r, w = self.pipe() |
| RAN = b'R' |
| DONE = b'D' |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| os.write({w}, {RAN!r}) |
| """) |
| os.write(w, DONE) |
| self.assertEqual(os.read(r, 1), RAN) |
| |
| def test_with_background_threads_still_running(self): |
| r_interp, w_interp = self.pipe() |
| r_thread, w_thread = self.pipe() |
| |
| RAN = b'R' |
| DONE = b'D' |
| FINISHED = b'F' |
| |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| import threading |
| |
| def task(): |
| v = os.read({r_thread}, 1) |
| assert v == {DONE!r} |
| os.write({w_interp}, {FINISHED!r}) |
| t = threading.Thread(target=task) |
| t.start() |
| os.write({w_interp}, {RAN!r}) |
| """) |
| interp.exec(f"""if True: |
| os.write({w_interp}, {RAN!r}) |
| """) |
| |
| os.write(w_thread, DONE) |
| interp.exec('t.join()') |
| self.assertEqual(os.read(r_interp, 1), RAN) |
| self.assertEqual(os.read(r_interp, 1), RAN) |
| self.assertEqual(os.read(r_interp, 1), FINISHED) |
| |
| def test_created_with_capi(self): |
| with self.interpreter_obj_from_capi() as (interp, _): |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| interp.exec('raise Exception("it worked!")') |
| |
| def test_list_comprehension(self): |
| # gh-135450: List comprehensions caused an assertion failure |
| # in _PyCode_CheckNoExternalState() |
| import string |
| r_interp, w_interp = self.pipe() |
| |
| interp = interpreters.create() |
| interp.exec(f"""if True: |
| import os |
| comp = [str(i) for i in range(10)] |
| os.write({w_interp}, ''.join(comp).encode()) |
| """) |
| self.assertEqual(os.read(r_interp, 10).decode(), string.digits) |
| interp.close() |
| |
| |
| # test__interpreters covers the remaining |
| # Interpreter.exec() behavior. |
| |
| |
| call_func_noop = defs.spam_minimal |
| call_func_ident = defs.spam_returns_arg |
| call_func_failure = defs.spam_raises |
| |
| |
| def call_func_return_shareable(): |
| return (1, None) |
| |
| |
| def call_func_return_stateless_func(): |
| return (lambda x: x) |
| |
| |
| def call_func_return_pickleable(): |
| return [1, 2, 3] |
| |
| |
| def call_func_return_unpickleable(): |
| x = 42 |
| return (lambda: x) |
| |
| |
| def get_call_func_closure(value): |
| def call_func_closure(): |
| return value |
| return call_func_closure |
| |
| |
| def call_func_exec_wrapper(script, ns): |
| res = exec(script, ns, ns) |
| return res, ns, id(ns) |
| |
| |
| class Spam: |
| |
| @staticmethod |
| def noop(): |
| pass |
| |
| @classmethod |
| def from_values(cls, *values): |
| return cls(values) |
| |
| def __init__(self, value): |
| self.value = value |
| |
| def __call__(self, *args, **kwargs): |
| return (self.value, args, kwargs) |
| |
| def __eq__(self, other): |
| if not isinstance(other, Spam): |
| return NotImplemented |
| return self.value == other.value |
| |
| def run(self, *args, **kwargs): |
| return (self.value, args, kwargs) |
| |
| |
| def call_func_complex(op, /, value=None, *args, exc=None, **kwargs): |
| if exc is not None: |
| raise exc |
| if op == '': |
| raise ValueError('missing op') |
| elif op == 'ident': |
| if args or kwargs: |
| raise Exception((args, kwargs)) |
| return value |
| elif op == 'full-ident': |
| return (value, args, kwargs) |
| elif op == 'globals': |
| if value is not None or args or kwargs: |
| raise Exception((value, args, kwargs)) |
| return __name__ |
| elif op == 'interpid': |
| if value is not None or args or kwargs: |
| raise Exception((value, args, kwargs)) |
| return interpreters.get_current().id |
| elif op == 'closure': |
| if args or kwargs: |
| raise Exception((args, kwargs)) |
| return get_call_func_closure(value) |
| elif op == 'custom': |
| if args or kwargs: |
| raise Exception((args, kwargs)) |
| return Spam(value) |
| elif op == 'custom-inner': |
| if args or kwargs: |
| raise Exception((args, kwargs)) |
| class Eggs(Spam): |
| pass |
| return Eggs(value) |
| elif not isinstance(op, str): |
| raise TypeError(op) |
| else: |
| raise NotImplementedError(op) |
| |
| |
| class TestInterpreterCall(TestBase): |
| |
| # signature |
| # - blank |
| # - args |
| # - kwargs |
| # - args, kwargs |
| # return |
| # - nothing (None) |
| # - simple |
| # - closure |
| # - custom |
| # ops: |
| # - do nothing |
| # - fail |
| # - echo |
| # - do complex, relative to interpreter |
| # scope |
| # - global func |
| # - local closure |
| # - returned closure |
| # - callable type instance |
| # - type |
| # - classmethod |
| # - staticmethod |
| # - instance method |
| # exception |
| # - builtin |
| # - custom |
| # - preserves info (e.g. SyntaxError) |
| # - matching error display |
| |
| @contextlib.contextmanager |
| def assert_fails(self, expected): |
| with self.assertRaises(ExecutionFailed) as cm: |
| yield cm |
| uncaught = cm.exception.excinfo |
| self.assertEqual(uncaught.type.__name__, expected.__name__) |
| |
| def assert_fails_not_shareable(self): |
| return self.assert_fails(interpreters.NotShareableError) |
| |
| def assert_code_equal(self, code1, code2): |
| if code1 == code2: |
| return |
| self.assertEqual(code1.co_name, code2.co_name) |
| self.assertEqual(code1.co_flags, code2.co_flags) |
| self.assertEqual(code1.co_consts, code2.co_consts) |
| self.assertEqual(code1.co_varnames, code2.co_varnames) |
| self.assertEqual(code1.co_cellvars, code2.co_cellvars) |
| self.assertEqual(code1.co_freevars, code2.co_freevars) |
| self.assertEqual(code1.co_names, code2.co_names) |
| self.assertEqual( |
| _testinternalcapi.get_code_var_counts(code1), |
| _testinternalcapi.get_code_var_counts(code2), |
| ) |
| self.assertEqual(code1.co_code, code2.co_code) |
| |
| def assert_funcs_equal(self, func1, func2): |
| if func1 == func2: |
| return |
| self.assertIs(type(func1), type(func2)) |
| self.assertEqual(func1.__name__, func2.__name__) |
| self.assertEqual(func1.__defaults__, func2.__defaults__) |
| self.assertEqual(func1.__kwdefaults__, func2.__kwdefaults__) |
| self.assertEqual(func1.__closure__, func2.__closure__) |
| self.assert_code_equal(func1.__code__, func2.__code__) |
| self.assertEqual( |
| _testinternalcapi.get_code_var_counts(func1), |
| _testinternalcapi.get_code_var_counts(func2), |
| ) |
| |
| def assert_exceptions_equal(self, exc1, exc2): |
| assert isinstance(exc1, Exception) |
| assert isinstance(exc2, Exception) |
| if exc1 == exc2: |
| return |
| self.assertIs(type(exc1), type(exc2)) |
| self.assertEqual(exc1.args, exc2.args) |
| |
| def test_stateless_funcs(self): |
| interp = interpreters.create() |
| |
| func = call_func_noop |
| with self.subTest('no args, no return'): |
| res = interp.call(func) |
| self.assertIsNone(res) |
| |
| func = call_func_return_shareable |
| with self.subTest('no args, returns shareable'): |
| res = interp.call(func) |
| self.assertEqual(res, (1, None)) |
| |
| func = call_func_return_stateless_func |
| expected = (lambda x: x) |
| with self.subTest('no args, returns stateless func'): |
| res = interp.call(func) |
| self.assert_funcs_equal(res, expected) |
| |
| func = call_func_return_pickleable |
| with self.subTest('no args, returns pickleable'): |
| res = interp.call(func) |
| self.assertEqual(res, [1, 2, 3]) |
| |
| func = call_func_return_unpickleable |
| with self.subTest('no args, returns unpickleable'): |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(func) |
| |
| def test_stateless_func_returns_arg(self): |
| interp = interpreters.create() |
| |
| for arg in [ |
| None, |
| 10, |
| 'spam!', |
| b'spam!', |
| (1, 2, 'spam!'), |
| memoryview(b'spam!'), |
| ]: |
| with self.subTest(f'shareable {arg!r}'): |
| assert _interpreters.is_shareable(arg) |
| res = interp.call(defs.spam_returns_arg, arg) |
| self.assertEqual(res, arg) |
| |
| for arg in defs.STATELESS_FUNCTIONS: |
| with self.subTest(f'stateless func {arg!r}'): |
| res = interp.call(defs.spam_returns_arg, arg) |
| self.assert_funcs_equal(res, arg) |
| |
| for arg in defs.TOP_FUNCTIONS: |
| if arg in defs.STATELESS_FUNCTIONS: |
| continue |
| with self.subTest(f'stateful func {arg!r}'): |
| res = interp.call(defs.spam_returns_arg, arg) |
| self.assert_funcs_equal(res, arg) |
| assert is_pickleable(arg) |
| |
| for arg in [ |
| Ellipsis, |
| NotImplemented, |
| object(), |
| 2**1000, |
| [1, 2, 3], |
| {'a': 1, 'b': 2}, |
| types.SimpleNamespace(x=42), |
| # builtin types |
| object, |
| type, |
| Exception, |
| ModuleNotFoundError, |
| # builtin exceptions |
| Exception('uh-oh!'), |
| ModuleNotFoundError('mymodule'), |
| # builtin fnctions |
| len, |
| sys.exit, |
| # user classes |
| *defs.TOP_CLASSES, |
| *(c(*a) for c, a in defs.TOP_CLASSES.items() |
| if c not in defs.CLASSES_WITHOUT_EQUALITY), |
| ]: |
| with self.subTest(f'pickleable {arg!r}'): |
| res = interp.call(defs.spam_returns_arg, arg) |
| if type(arg) is object: |
| self.assertIs(type(res), object) |
| elif isinstance(arg, BaseException): |
| self.assert_exceptions_equal(res, arg) |
| else: |
| self.assertEqual(res, arg) |
| assert is_pickleable(arg) |
| |
| for arg in [ |
| types.MappingProxyType({}), |
| *(f for f in defs.NESTED_FUNCTIONS |
| if f not in defs.STATELESS_FUNCTIONS), |
| ]: |
| with self.subTest(f'unpickleable {arg!r}'): |
| assert not _interpreters.is_shareable(arg) |
| assert not is_pickleable(arg) |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(defs.spam_returns_arg, arg) |
| |
| def test_full_args(self): |
| interp = interpreters.create() |
| expected = (1, 2, 3, 4, 5, 6, ('?',), {'g': 7, 'h': 8}) |
| func = defs.spam_full_args |
| res = interp.call(func, 1, 2, 3, 4, '?', e=5, f=6, g=7, h=8) |
| self.assertEqual(res, expected) |
| |
| def test_full_defaults(self): |
| # pickleable, but not stateless |
| interp = interpreters.create() |
| expected = (-1, -2, -3, -4, -5, -6, (), {'g': 8, 'h': 9}) |
| res = interp.call(defs.spam_full_args_with_defaults, g=8, h=9) |
| self.assertEqual(res, expected) |
| |
| def test_modified_arg(self): |
| interp = interpreters.create() |
| script = dedent(""" |
| a = 7 |
| b = 2 |
| c = a ** b |
| """) |
| ns = {} |
| expected = {'a': 7, 'b': 2, 'c': 49} |
| res = interp.call(call_func_exec_wrapper, script, ns) |
| obj, resns, resid = res |
| del resns['__builtins__'] |
| self.assertIsNone(obj) |
| self.assertEqual(ns, {}) |
| self.assertEqual(resns, expected) |
| self.assertNotEqual(resid, id(ns)) |
| self.assertNotEqual(resid, id(resns)) |
| |
| def test_func_in___main___valid(self): |
| # pickleable, already there' |
| |
| with os_helper.temp_dir() as tempdir: |
| def new_mod(name, text): |
| script_helper.make_script(tempdir, name, dedent(text)) |
| |
| def run(text): |
| name = 'myscript' |
| text = dedent(f""" |
| import sys |
| sys.path.insert(0, {tempdir!r}) |
| |
| """) + dedent(text) |
| filename = script_helper.make_script(tempdir, name, text) |
| res = script_helper.assert_python_ok(filename) |
| return res.out.decode('utf-8').strip() |
| |
| # no module indirection |
| with self.subTest('no indirection'): |
| text = run(f""" |
| from concurrent import interpreters |
| |
| def spam(): |
| # This a global var... |
| return __name__ |
| |
| if __name__ == '__main__': |
| interp = interpreters.create() |
| res = interp.call(spam) |
| print(res) |
| """) |
| self.assertEqual(text, '<fake __main__>') |
| |
| # indirect as func, direct interp |
| new_mod('mymod', f""" |
| def run(interp, func): |
| return interp.call(func) |
| """) |
| with self.subTest('indirect as func, direct interp'): |
| text = run(f""" |
| from concurrent import interpreters |
| import mymod |
| |
| def spam(): |
| # This a global var... |
| return __name__ |
| |
| if __name__ == '__main__': |
| interp = interpreters.create() |
| res = mymod.run(interp, spam) |
| print(res) |
| """) |
| self.assertEqual(text, '<fake __main__>') |
| |
| # indirect as func, indirect interp |
| new_mod('mymod', f""" |
| from concurrent import interpreters |
| def run(func): |
| interp = interpreters.create() |
| return interp.call(func) |
| """) |
| with self.subTest('indirect as func, indirect interp'): |
| text = run(f""" |
| import mymod |
| |
| def spam(): |
| # This a global var... |
| return __name__ |
| |
| if __name__ == '__main__': |
| res = mymod.run(spam) |
| print(res) |
| """) |
| self.assertEqual(text, '<fake __main__>') |
| |
| def test_func_in___main___invalid(self): |
| interp = interpreters.create() |
| |
| funcname = f'{__name__.replace(".", "_")}_spam_okay' |
| script = dedent(f""" |
| def {funcname}(): |
| # This a global var... |
| return __name__ |
| """) |
| |
| with self.subTest('pickleable, added dynamically'): |
| with defined_in___main__(funcname, script) as arg: |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(defs.spam_returns_arg, arg) |
| |
| with self.subTest('lying about __main__'): |
| with defined_in___main__(funcname, script, remove=True) as arg: |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(defs.spam_returns_arg, arg) |
| |
| def test_func_in___main___hidden(self): |
| # When a top-level function that uses global variables is called |
| # through Interpreter.call(), it will be pickled, sent over, |
| # and unpickled. That requires that it be found in the other |
| # interpreter's __main__ module. However, the original script |
| # that defined the function is only run in the main interpreter, |
| # so pickle.loads() would normally fail. |
| # |
| # We work around this by running the script in the other |
| # interpreter. However, this is a one-off solution for the sake |
| # of unpickling, so we avoid modifying that interpreter's |
| # __main__ module by running the script in a hidden module. |
| # |
| # In this test we verify that the function runs with the hidden |
| # module as its __globals__ when called in the other interpreter, |
| # and that the interpreter's __main__ module is unaffected. |
| text = dedent(""" |
| eggs = True |
| |
| def spam(*, explicit=False): |
| if explicit: |
| import __main__ |
| ns = __main__.__dict__ |
| else: |
| # For now we have to have a LOAD_GLOBAL in the |
| # function in order for globals() to actually return |
| # spam.__globals__. Maybe it doesn't go through pickle? |
| # XXX We will fix this later. |
| spam |
| ns = globals() |
| |
| func = ns.get('spam') |
| return [ |
| id(ns), |
| ns.get('__name__'), |
| ns.get('__file__'), |
| id(func), |
| None if func is None else repr(func), |
| ns.get('eggs'), |
| ns.get('ham'), |
| ] |
| |
| if __name__ == "__main__": |
| from concurrent import interpreters |
| interp = interpreters.create() |
| |
| ham = True |
| print([ |
| [ |
| spam(explicit=True), |
| spam(), |
| ], |
| [ |
| interp.call(spam, explicit=True), |
| interp.call(spam), |
| ], |
| ]) |
| """) |
| with os_helper.temp_dir() as tempdir: |
| filename = script_helper.make_script(tempdir, 'my-script', text) |
| res = script_helper.assert_python_ok(filename) |
| stdout = res.out.decode('utf-8').strip() |
| local, remote = eval(stdout) |
| |
| # In the main interpreter. |
| main, unpickled = local |
| nsid, _, _, funcid, func, _, _ = main |
| self.assertEqual(main, [ |
| nsid, |
| '__main__', |
| filename, |
| funcid, |
| func, |
| True, |
| True, |
| ]) |
| self.assertIsNot(func, None) |
| self.assertRegex(func, '^<function spam at 0x.*>$') |
| self.assertEqual(unpickled, main) |
| |
| # In the subinterpreter. |
| main, unpickled = remote |
| nsid1, _, _, funcid1, _, _, _ = main |
| self.assertEqual(main, [ |
| nsid1, |
| '__main__', |
| None, |
| funcid1, |
| None, |
| None, |
| None, |
| ]) |
| nsid2, _, _, funcid2, func, _, _ = unpickled |
| self.assertEqual(unpickled, [ |
| nsid2, |
| '<fake __main__>', |
| filename, |
| funcid2, |
| func, |
| True, |
| None, |
| ]) |
| self.assertIsNot(func, None) |
| self.assertRegex(func, '^<function spam at 0x.*>$') |
| self.assertNotEqual(nsid2, nsid1) |
| self.assertNotEqual(funcid2, funcid1) |
| |
| def test_func_in___main___uses_globals(self): |
| # See the note in test_func_in___main___hidden about pickle |
| # and the __main__ module. |
| # |
| # Additionally, the solution to that problem must provide |
| # for global variables on which a pickled function might rely. |
| # |
| # To check that, we run a script that has two global functions |
| # and a global variable in the __main__ module. One of the |
| # functions sets the global variable and the other returns |
| # the value. |
| # |
| # The script calls those functions multiple times in another |
| # interpreter, to verify the following: |
| # |
| # * the global variable is properly initialized |
| # * the global variable retains state between calls |
| # * the setter modifies that persistent variable |
| # * the getter uses the variable |
| # * the calls in the other interpreter do not modify |
| # the main interpreter |
| # * those calls don't modify the interpreter's __main__ module |
| # * the functions and variable do not actually show up in the |
| # other interpreter's __main__ module |
| text = dedent(""" |
| count = 0 |
| |
| def inc(x=1): |
| global count |
| count += x |
| |
| def get_count(): |
| return count |
| |
| if __name__ == "__main__": |
| counts = [] |
| results = [count, counts] |
| |
| from concurrent import interpreters |
| interp = interpreters.create() |
| |
| val = interp.call(get_count) |
| counts.append(val) |
| |
| interp.call(inc) |
| val = interp.call(get_count) |
| counts.append(val) |
| |
| interp.call(inc, 3) |
| val = interp.call(get_count) |
| counts.append(val) |
| |
| results.append(count) |
| |
| modified = {name: interp.call(eval, f'{name!r} in vars()') |
| for name in ('count', 'inc', 'get_count')} |
| results.append(modified) |
| |
| print(results) |
| """) |
| with os_helper.temp_dir() as tempdir: |
| filename = script_helper.make_script(tempdir, 'my-script', text) |
| res = script_helper.assert_python_ok(filename) |
| stdout = res.out.decode('utf-8').strip() |
| before, counts, after, modified = eval(stdout) |
| self.assertEqual(modified, { |
| 'count': False, |
| 'inc': False, |
| 'get_count': False, |
| }) |
| self.assertEqual(before, 0) |
| self.assertEqual(after, 0) |
| self.assertEqual(counts, [0, 1, 4]) |
| |
| def test_raises(self): |
| interp = interpreters.create() |
| with self.assertRaises(ExecutionFailed): |
| interp.call(call_func_failure) |
| |
| with self.assert_fails(ValueError): |
| interp.call(call_func_complex, '???', exc=ValueError('spam')) |
| |
| def test_call_valid(self): |
| interp = interpreters.create() |
| |
| for i, (callable, args, kwargs, expected) in enumerate([ |
| (call_func_noop, (), {}, None), |
| (call_func_ident, ('spamspamspam',), {}, 'spamspamspam'), |
| (call_func_return_shareable, (), {}, (1, None)), |
| (call_func_return_pickleable, (), {}, [1, 2, 3]), |
| (Spam.noop, (), {}, None), |
| (Spam.from_values, (), {}, Spam(())), |
| (Spam.from_values, (1, 2, 3), {}, Spam((1, 2, 3))), |
| (Spam, ('???',), {}, Spam('???')), |
| (Spam(101), (), {}, (101, (), {})), |
| (Spam(10101).run, (), {}, (10101, (), {})), |
| (call_func_complex, ('ident', 'spam'), {}, 'spam'), |
| (call_func_complex, ('full-ident', 'spam'), {}, ('spam', (), {})), |
| (call_func_complex, ('full-ident', 'spam', 'ham'), {'eggs': '!!!'}, |
| ('spam', ('ham',), {'eggs': '!!!'})), |
| (call_func_complex, ('globals',), {}, __name__), |
| (call_func_complex, ('interpid',), {}, interp.id), |
| (call_func_complex, ('custom', 'spam!'), {}, Spam('spam!')), |
| ]): |
| with self.subTest(f'success case #{i+1}'): |
| res = interp.call(callable, *args, **kwargs) |
| self.assertEqual(res, expected) |
| |
| def test_call_invalid(self): |
| interp = interpreters.create() |
| |
| func = get_call_func_closure |
| with self.subTest(func): |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(func, 42) |
| |
| func = get_call_func_closure(42) |
| with self.subTest(func): |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(func) |
| |
| func = call_func_complex |
| op = 'closure' |
| with self.subTest(f'{func} ({op})'): |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(func, op, value='~~~') |
| |
| op = 'custom-inner' |
| with self.subTest(f'{func} ({op})'): |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(func, op, 'eggs!') |
| |
| def test_callable_requires_frame(self): |
| # There are various functions that require a current frame. |
| interp = interpreters.create() |
| for call, expected in [ |
| ((eval, '[1, 2, 3]'), |
| [1, 2, 3]), |
| ((eval, 'sum([1, 2, 3])'), |
| 6), |
| ((exec, '...'), |
| None), |
| ]: |
| with self.subTest(str(call)): |
| res = interp.call(*call) |
| self.assertEqual(res, expected) |
| |
| result_not_pickleable = [ |
| globals, |
| locals, |
| vars, |
| ] |
| for func, expectedtype in { |
| globals: dict, |
| locals: dict, |
| vars: dict, |
| dir: list, |
| }.items(): |
| with self.subTest(str(func)): |
| if func in result_not_pickleable: |
| with self.assertRaises(interpreters.NotShareableError): |
| interp.call(func) |
| else: |
| res = interp.call(func) |
| self.assertIsInstance(res, expectedtype) |
| self.assertIn('__builtins__', res) |
| |
| def test_globals_from_builtins(self): |
| # The builtins exec(), eval(), globals(), locals(), vars(), |
| # and dir() each runs relative to the target interpreter's |
| # __main__ module, when called directly. However, |
| # globals(), locals(), and vars() don't work when called |
| # directly so we don't check them. |
| from _frozen_importlib import BuiltinImporter |
| interp = interpreters.create() |
| |
| names = interp.call(dir) |
| self.assertEqual(names, [ |
| '__builtins__', |
| '__doc__', |
| '__loader__', |
| '__name__', |
| '__package__', |
| '__spec__', |
| ]) |
| |
| values = {name: interp.call(eval, name) |
| for name in names if name != '__builtins__'} |
| self.assertEqual(values, { |
| '__name__': '__main__', |
| '__doc__': None, |
| '__spec__': None, # It wasn't imported, so no module spec? |
| '__package__': None, |
| '__loader__': BuiltinImporter, |
| }) |
| with self.assertRaises(ExecutionFailed): |
| interp.call(eval, 'spam'), |
| |
| interp.call(exec, f'assert dir() == {names}') |
| |
| # Update the interpreter's __main__. |
| interp.prepare_main(spam=42) |
| expected = names + ['spam'] |
| |
| names = interp.call(dir) |
| self.assertEqual(names, expected) |
| |
| value = interp.call(eval, 'spam') |
| self.assertEqual(value, 42) |
| |
| interp.call(exec, f'assert dir() == {expected}, dir()') |
| |
| def test_globals_from_stateless_func(self): |
| # A stateless func, which doesn't depend on any globals, |
| # doesn't go through pickle, so it runs in __main__. |
| def set_global(name, value): |
| globals()[name] = value |
| |
| def get_global(name): |
| return globals().get(name) |
| |
| interp = interpreters.create() |
| |
| modname = interp.call(get_global, '__name__') |
| self.assertEqual(modname, '__main__') |
| |
| res = interp.call(get_global, 'spam') |
| self.assertIsNone(res) |
| |
| interp.exec('spam = True') |
| res = interp.call(get_global, 'spam') |
| self.assertTrue(res) |
| |
| interp.call(set_global, 'spam', 42) |
| res = interp.call(get_global, 'spam') |
| self.assertEqual(res, 42) |
| |
| interp.exec('assert spam == 42, repr(spam)') |
| |
| def test_call_in_thread(self): |
| interp = interpreters.create() |
| |
| for i, (callable, args, kwargs) in enumerate([ |
| (call_func_noop, (), {}), |
| (call_func_return_shareable, (), {}), |
| (call_func_return_pickleable, (), {}), |
| (Spam.from_values, (), {}), |
| (Spam.from_values, (1, 2, 3), {}), |
| (Spam(101), (), {}), |
| (Spam(10101).run, (), {}), |
| (Spam.noop, (), {}), |
| (call_func_complex, ('ident', 'spam'), {}), |
| (call_func_complex, ('full-ident', 'spam'), {}), |
| (call_func_complex, ('full-ident', 'spam', 'ham'), {'eggs': '!!!'}), |
| (call_func_complex, ('globals',), {}), |
| (call_func_complex, ('interpid',), {}), |
| (call_func_complex, ('custom', 'spam!'), {}), |
| ]): |
| with self.subTest(f'success case #{i+1}'): |
| with self.captured_thread_exception() as ctx: |
| t = interp.call_in_thread(callable, *args, **kwargs) |
| t.join() |
| self.assertIsNone(ctx.caught) |
| |
| for i, (callable, args, kwargs) in enumerate([ |
| (get_call_func_closure, (42,), {}), |
| (get_call_func_closure(42), (), {}), |
| ]): |
| with self.subTest(f'invalid case #{i+1}'): |
| with self.captured_thread_exception() as ctx: |
| t = interp.call_in_thread(callable, *args, **kwargs) |
| t.join() |
| self.assertIsNotNone(ctx.caught) |
| |
| with self.captured_thread_exception() as ctx: |
| t = interp.call_in_thread(call_func_failure) |
| t.join() |
| self.assertIsNotNone(ctx.caught) |
| |
| |
| class TestIsShareable(TestBase): |
| |
| def test_default_shareables(self): |
| shareables = [ |
| # singletons |
| None, |
| # builtin objects |
| b'spam', |
| 'spam', |
| 10, |
| -10, |
| True, |
| False, |
| 100.0, |
| (), |
| (1, ('spam', 'eggs'), True), |
| ] |
| for obj in shareables: |
| with self.subTest(obj): |
| shareable = interpreters.is_shareable(obj) |
| self.assertTrue(shareable) |
| |
| 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 |
| NotImplemented, |
| ..., |
| # builtin types and objects |
| type, |
| object, |
| object(), |
| Exception(), |
| # 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 LowLevelTests(TestBase): |
| |
| # The behaviors in the low-level module are important in as much |
| # as they are exercised by the high-level module. Therefore the |
| # most important testing happens in the high-level tests. |
| # These low-level tests cover corner cases that are not |
| # encountered by the high-level module, thus they |
| # mostly shouldn't matter as much. |
| |
| def test_new_config(self): |
| # This test overlaps with |
| # test.test_capi.test_misc.InterpreterConfigTests. |
| |
| default = _interpreters.new_config('isolated') |
| with self.subTest('no arg'): |
| config = _interpreters.new_config() |
| self.assert_ns_equal(config, default) |
| self.assertIsNot(config, default) |
| |
| with self.subTest('default'): |
| config1 = _interpreters.new_config('default') |
| self.assert_ns_equal(config1, default) |
| self.assertIsNot(config1, default) |
| |
| config2 = _interpreters.new_config('default') |
| self.assert_ns_equal(config2, config1) |
| self.assertIsNot(config2, config1) |
| |
| for arg in ['', 'default']: |
| with self.subTest(f'default ({arg!r})'): |
| config = _interpreters.new_config(arg) |
| self.assert_ns_equal(config, default) |
| self.assertIsNot(config, default) |
| |
| supported = { |
| 'isolated': types.SimpleNamespace( |
| use_main_obmalloc=False, |
| allow_fork=False, |
| allow_exec=False, |
| allow_threads=True, |
| allow_daemon_threads=False, |
| check_multi_interp_extensions=True, |
| gil='own', |
| ), |
| 'legacy': types.SimpleNamespace( |
| use_main_obmalloc=True, |
| allow_fork=True, |
| allow_exec=True, |
| allow_threads=True, |
| allow_daemon_threads=True, |
| check_multi_interp_extensions=bool(Py_GIL_DISABLED), |
| gil='shared', |
| ), |
| 'empty': types.SimpleNamespace( |
| use_main_obmalloc=False, |
| allow_fork=False, |
| allow_exec=False, |
| allow_threads=False, |
| allow_daemon_threads=False, |
| check_multi_interp_extensions=False, |
| gil='default', |
| ), |
| } |
| gil_supported = ['default', 'shared', 'own'] |
| |
| for name, vanilla in supported.items(): |
| with self.subTest(f'supported ({name})'): |
| expected = vanilla |
| config1 = _interpreters.new_config(name) |
| self.assert_ns_equal(config1, expected) |
| self.assertIsNot(config1, expected) |
| |
| config2 = _interpreters.new_config(name) |
| self.assert_ns_equal(config2, config1) |
| self.assertIsNot(config2, config1) |
| |
| with self.subTest(f'noop override ({name})'): |
| expected = vanilla |
| overrides = vars(vanilla) |
| config = _interpreters.new_config(name, **overrides) |
| self.assert_ns_equal(config, expected) |
| |
| with self.subTest(f'override all ({name})'): |
| overrides = {k: not v for k, v in vars(vanilla).items()} |
| for gil in gil_supported: |
| if vanilla.gil == gil: |
| continue |
| overrides['gil'] = gil |
| expected = types.SimpleNamespace(**overrides) |
| config = _interpreters.new_config(name, **overrides) |
| self.assert_ns_equal(config, expected) |
| |
| # Override individual fields. |
| for field, old in vars(vanilla).items(): |
| if field == 'gil': |
| values = [v for v in gil_supported if v != old] |
| else: |
| values = [not old] |
| for val in values: |
| with self.subTest(f'{name}.{field} ({old!r} -> {val!r})'): |
| overrides = {field: val} |
| expected = types.SimpleNamespace( |
| **dict(vars(vanilla), **overrides), |
| ) |
| config = _interpreters.new_config(name, **overrides) |
| self.assert_ns_equal(config, expected) |
| |
| with self.subTest('extra override'): |
| with self.assertRaises(ValueError): |
| _interpreters.new_config(spam=True) |
| |
| # Bad values for bool fields. |
| for field, value in vars(supported['empty']).items(): |
| if field == 'gil': |
| continue |
| assert isinstance(value, bool) |
| for value in [1, '', 'spam', 1.0, None, object()]: |
| with self.subTest(f'bad override ({field}={value!r})'): |
| with self.assertRaises(TypeError): |
| _interpreters.new_config(**{field: value}) |
| |
| # Bad values for .gil. |
| for value in [True, 1, 1.0, None, object()]: |
| with self.subTest(f'bad override (gil={value!r})'): |
| with self.assertRaises(TypeError): |
| _interpreters.new_config(gil=value) |
| for value in ['', 'spam']: |
| with self.subTest(f'bad override (gil={value!r})'): |
| with self.assertRaises(ValueError): |
| _interpreters.new_config(gil=value) |
| |
| def test_get_main(self): |
| interpid, whence = _interpreters.get_main() |
| self.assertEqual(interpid, 0) |
| self.assertEqual(whence, _interpreters.WHENCE_RUNTIME) |
| self.assertEqual( |
| _interpreters.whence(interpid), |
| _interpreters.WHENCE_RUNTIME) |
| |
| def test_get_current(self): |
| with self.subTest('main'): |
| main, *_ = _interpreters.get_main() |
| interpid, whence = _interpreters.get_current() |
| self.assertEqual(interpid, main) |
| self.assertEqual(whence, _interpreters.WHENCE_RUNTIME) |
| |
| script = f""" |
| import _interpreters |
| interpid, whence = _interpreters.get_current() |
| print((interpid, whence)) |
| """ |
| def parse_stdout(text): |
| interpid, whence = eval(text) |
| return interpid, whence |
| |
| with self.subTest('from _interpreters'): |
| orig = _interpreters.create() |
| text = self.run_and_capture(orig, script) |
| interpid, whence = parse_stdout(text) |
| self.assertEqual(interpid, orig) |
| self.assertEqual(whence, _interpreters.WHENCE_STDLIB) |
| |
| with self.subTest('from C-API'): |
| last = 0 |
| for id, *_ in _interpreters.list_all(): |
| last = max(last, id) |
| expected = last + 1 |
| text = self.run_temp_from_capi(script) |
| interpid, whence = parse_stdout(text) |
| self.assertEqual(interpid, expected) |
| self.assertEqual(whence, _interpreters.WHENCE_CAPI) |
| |
| def test_list_all(self): |
| mainid, *_ = _interpreters.get_main() |
| interpid1 = _interpreters.create() |
| interpid2 = _interpreters.create() |
| interpid3 = _interpreters.create() |
| expected = [ |
| (mainid, _interpreters.WHENCE_RUNTIME), |
| (interpid1, _interpreters.WHENCE_STDLIB), |
| (interpid2, _interpreters.WHENCE_STDLIB), |
| (interpid3, _interpreters.WHENCE_STDLIB), |
| ] |
| |
| with self.subTest('main'): |
| res = _interpreters.list_all() |
| self.assertEqual(res, expected) |
| |
| with self.subTest('via interp from _interpreters'): |
| text = self.run_and_capture(interpid2, f""" |
| import _interpreters |
| print( |
| _interpreters.list_all()) |
| """) |
| |
| res = eval(text) |
| self.assertEqual(res, expected) |
| |
| with self.subTest('via interp from C-API'): |
| interpid4 = interpid3 + 1 |
| interpid5 = interpid4 + 1 |
| expected2 = expected + [ |
| (interpid4, _interpreters.WHENCE_CAPI), |
| (interpid5, _interpreters.WHENCE_STDLIB), |
| ] |
| expected3 = expected + [ |
| (interpid5, _interpreters.WHENCE_STDLIB), |
| ] |
| text = self.run_temp_from_capi(f""" |
| import _interpreters |
| _interpreters.create() |
| print( |
| _interpreters.list_all()) |
| """) |
| res2 = eval(text) |
| res3 = _interpreters.list_all() |
| self.assertEqual(res2, expected2) |
| self.assertEqual(res3, expected3) |
| |
| def test_create(self): |
| isolated = _interpreters.new_config('isolated') |
| legacy = _interpreters.new_config('legacy') |
| default = isolated |
| |
| with self.subTest('no args'): |
| interpid = _interpreters.create() |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, default) |
| |
| with self.subTest('config: None'): |
| interpid = _interpreters.create(None) |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, default) |
| |
| with self.subTest('config: \'empty\''): |
| with self.assertRaises(InterpreterError): |
| # The "empty" config isn't viable on its own. |
| _interpreters.create('empty') |
| |
| for arg, expected in { |
| '': default, |
| 'default': default, |
| 'isolated': isolated, |
| 'legacy': legacy, |
| }.items(): |
| with self.subTest(f'str arg: {arg!r}'): |
| interpid = _interpreters.create(arg) |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, expected) |
| |
| with self.subTest('custom'): |
| orig = _interpreters.new_config('empty') |
| orig.use_main_obmalloc = True |
| orig.check_multi_interp_extensions = bool(Py_GIL_DISABLED) |
| orig.gil = 'shared' |
| interpid = _interpreters.create(orig) |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, orig) |
| |
| with self.subTest('missing fields'): |
| orig = _interpreters.new_config() |
| del orig.gil |
| with self.assertRaises(ValueError): |
| _interpreters.create(orig) |
| |
| with self.subTest('extra fields'): |
| orig = _interpreters.new_config() |
| orig.spam = True |
| with self.assertRaises(ValueError): |
| _interpreters.create(orig) |
| |
| with self.subTest('whence'): |
| interpid = _interpreters.create() |
| self.assertEqual( |
| _interpreters.whence(interpid), |
| _interpreters.WHENCE_STDLIB) |
| |
| @requires_test_modules |
| def test_destroy(self): |
| with self.subTest('from _interpreters'): |
| interpid = _interpreters.create() |
| before = [id for id, *_ in _interpreters.list_all()] |
| _interpreters.destroy(interpid) |
| after = [id for id, *_ in _interpreters.list_all()] |
| |
| self.assertIn(interpid, before) |
| self.assertNotIn(interpid, after) |
| self.assertFalse( |
| self.interp_exists(interpid)) |
| |
| with self.subTest('main'): |
| interpid, *_ = _interpreters.get_main() |
| with self.assertRaises(InterpreterError): |
| # It is the current interpreter. |
| _interpreters.destroy(interpid) |
| |
| with self.subTest('from C-API'): |
| interpid = _testinternalcapi.create_interpreter() |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| _interpreters.destroy(interpid, restrict=True) |
| self.assertTrue( |
| self.interp_exists(interpid)) |
| _interpreters.destroy(interpid) |
| self.assertFalse( |
| self.interp_exists(interpid)) |
| |
| with self.subTest('basic C-API'): |
| interpid = _testinternalcapi.create_interpreter() |
| self.assertTrue( |
| self.interp_exists(interpid)) |
| _testinternalcapi.destroy_interpreter(interpid, basic=True) |
| self.assertFalse( |
| self.interp_exists(interpid)) |
| |
| def test_get_config(self): |
| # This test overlaps with |
| # test.test_capi.test_misc.InterpreterConfigTests. |
| |
| with self.subTest('main'): |
| expected = _interpreters.new_config('legacy') |
| expected.gil = 'own' |
| if Py_GIL_DISABLED: |
| expected.check_multi_interp_extensions = False |
| interpid, *_ = _interpreters.get_main() |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, expected) |
| |
| with self.subTest('isolated'): |
| expected = _interpreters.new_config('isolated') |
| interpid = _interpreters.create('isolated') |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, expected) |
| |
| with self.subTest('legacy'): |
| expected = _interpreters.new_config('legacy') |
| interpid = _interpreters.create('legacy') |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, expected) |
| |
| with self.subTest('from C-API'): |
| orig = _interpreters.new_config('isolated') |
| with self.interpreter_from_capi(orig) as interpid: |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| _interpreters.get_config(interpid, restrict=True) |
| config = _interpreters.get_config(interpid) |
| self.assert_ns_equal(config, orig) |
| |
| @requires_test_modules |
| def test_whence(self): |
| with self.subTest('main'): |
| interpid, *_ = _interpreters.get_main() |
| whence = _interpreters.whence(interpid) |
| self.assertEqual(whence, _interpreters.WHENCE_RUNTIME) |
| |
| with self.subTest('stdlib'): |
| interpid = _interpreters.create() |
| whence = _interpreters.whence(interpid) |
| self.assertEqual(whence, _interpreters.WHENCE_STDLIB) |
| |
| for orig, name in { |
| _interpreters.WHENCE_UNKNOWN: 'not ready', |
| _interpreters.WHENCE_LEGACY_CAPI: 'legacy C-API', |
| _interpreters.WHENCE_CAPI: 'C-API', |
| _interpreters.WHENCE_XI: 'cross-interpreter C-API', |
| }.items(): |
| with self.subTest(f'from C-API ({orig}: {name})'): |
| with self.interpreter_from_capi(whence=orig) as interpid: |
| whence = _interpreters.whence(interpid) |
| self.assertEqual(whence, orig) |
| |
| with self.subTest('from C-API, running'): |
| text = self.run_temp_from_capi(dedent(f""" |
| import _interpreters |
| interpid, *_ = _interpreters.get_current() |
| print(_interpreters.whence(interpid)) |
| """), |
| config=True) |
| whence = eval(text) |
| self.assertEqual(whence, _interpreters.WHENCE_CAPI) |
| |
| with self.subTest('from legacy C-API, running'): |
| ... |
| text = self.run_temp_from_capi(dedent(f""" |
| import _interpreters |
| interpid, *_ = _interpreters.get_current() |
| print(_interpreters.whence(interpid)) |
| """), |
| config=False) |
| whence = eval(text) |
| self.assertEqual(whence, _interpreters.WHENCE_LEGACY_CAPI) |
| |
| def test_contextvars_missing(self): |
| script = f""" |
| import contextvars |
| print(getattr(contextvars.Token, "MISSING", "'doesn't exist'")) |
| """ |
| |
| orig = _interpreters.create() |
| text = self.run_and_capture(orig, script) |
| self.assertEqual(text.strip(), "<Token.MISSING>") |
| |
| def test_is_running(self): |
| def check(interpid, expected): |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| _interpreters.is_running(interpid, restrict=True) |
| running = _interpreters.is_running(interpid) |
| self.assertIs(running, expected) |
| |
| with self.subTest('from _interpreters (running)'): |
| interpid = _interpreters.create() |
| with self.running(interpid): |
| running = _interpreters.is_running(interpid) |
| self.assertTrue(running) |
| |
| with self.subTest('from _interpreters (not running)'): |
| interpid = _interpreters.create() |
| running = _interpreters.is_running(interpid) |
| self.assertFalse(running) |
| |
| with self.subTest('main'): |
| interpid, *_ = _interpreters.get_main() |
| check(interpid, True) |
| |
| with self.subTest('from C-API (running __main__)'): |
| with self.interpreter_from_capi() as interpid: |
| with self.running_from_capi(interpid, main=True): |
| check(interpid, True) |
| |
| with self.subTest('from C-API (running, but not __main__)'): |
| with self.interpreter_from_capi() as interpid: |
| with self.running_from_capi(interpid, main=False): |
| check(interpid, False) |
| |
| with self.subTest('from C-API (not running)'): |
| with self.interpreter_from_capi() as interpid: |
| check(interpid, False) |
| |
| def test_exec(self): |
| with self.subTest('run script'): |
| interpid = _interpreters.create() |
| script, results = _captured_script('print("it worked!", end="")') |
| with results: |
| exc = _interpreters.exec(interpid, script) |
| results = results.final() |
| results.raise_if_failed() |
| out = results.stdout |
| self.assertEqual(out, 'it worked!') |
| |
| with self.subTest('uncaught exception'): |
| interpid = _interpreters.create() |
| script, results = _captured_script(""" |
| raise Exception('uh-oh!') |
| print("it worked!", end="") |
| """) |
| with results: |
| exc = _interpreters.exec(interpid, script) |
| out = results.stdout() |
| expected = build_excinfo( |
| Exception, 'uh-oh!', |
| # We check these in other tests. |
| formatted=exc.formatted, |
| errdisplay=exc.errdisplay, |
| ) |
| self.assertEqual(out, '') |
| self.assert_ns_equal(exc, expected) |
| |
| with self.subTest('from C-API'): |
| with self.interpreter_from_capi() as interpid: |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| _interpreters.exec(interpid, 'raise Exception("it worked!")', |
| restrict=True) |
| exc = _interpreters.exec(interpid, 'raise Exception("it worked!")') |
| self.assertIsNot(exc, None) |
| self.assertEqual(exc.msg, 'it worked!') |
| |
| def test_call(self): |
| interpid = _interpreters.create() |
| |
| # Here we focus on basic args and return values. |
| # See TestInterpreterCall for full operational coverage, |
| # including supported callables. |
| |
| with self.subTest('no args, return None'): |
| func = defs.spam_minimal |
| res, exc = _interpreters.call(interpid, func) |
| self.assertIsNone(exc) |
| self.assertIsNone(res) |
| |
| with self.subTest('empty args, return None'): |
| func = defs.spam_minimal |
| res, exc = _interpreters.call(interpid, func, (), {}) |
| self.assertIsNone(exc) |
| self.assertIsNone(res) |
| |
| with self.subTest('no args, return non-None'): |
| func = defs.script_with_return |
| res, exc = _interpreters.call(interpid, func) |
| self.assertIsNone(exc) |
| self.assertIs(res, True) |
| |
| with self.subTest('full args, return non-None'): |
| expected = (1, 2, 3, 4, 5, 6, (7, 8), {'g': 9, 'h': 0}) |
| func = defs.spam_full_args |
| args = (1, 2, 3, 4, 7, 8) |
| kwargs = dict(e=5, f=6, g=9, h=0) |
| res, exc = _interpreters.call(interpid, func, args, kwargs) |
| self.assertIsNone(exc) |
| self.assertEqual(res, expected) |
| |
| with self.subTest('uncaught exception'): |
| func = defs.spam_raises |
| res, exc = _interpreters.call(interpid, func) |
| expected = build_excinfo( |
| Exception, 'spam!', |
| # We check these in other tests. |
| formatted=exc.formatted, |
| errdisplay=exc.errdisplay, |
| ) |
| self.assertIsNone(res) |
| self.assertEqual(exc, expected) |
| |
| @requires_test_modules |
| def test_set___main___attrs(self): |
| with self.subTest('from _interpreters'): |
| interpid = _interpreters.create() |
| before1 = _interpreters.exec(interpid, 'assert spam == \'eggs\'') |
| before2 = _interpreters.exec(interpid, 'assert ham == 42') |
| self.assertEqual(before1.type.__name__, 'NameError') |
| self.assertEqual(before2.type.__name__, 'NameError') |
| |
| _interpreters.set___main___attrs(interpid, dict( |
| spam='eggs', |
| ham=42, |
| )) |
| after1 = _interpreters.exec(interpid, 'assert spam == \'eggs\'') |
| after2 = _interpreters.exec(interpid, 'assert ham == 42') |
| after3 = _interpreters.exec(interpid, 'assert spam == 42') |
| self.assertIs(after1, None) |
| self.assertIs(after2, None) |
| self.assertEqual(after3.type.__name__, 'AssertionError') |
| |
| with self.assertRaises(ValueError): |
| # GH-127165: Embedded NULL characters broke the lookup |
| _interpreters.set___main___attrs(interpid, {"\x00": 1}) |
| |
| with self.subTest('from C-API'): |
| with self.interpreter_from_capi() as interpid: |
| with self.assertRaisesRegex(InterpreterError, 'unrecognized'): |
| _interpreters.set___main___attrs(interpid, {'spam': True}, |
| restrict=True) |
| _interpreters.set___main___attrs(interpid, {'spam': True}) |
| rc = _testinternalcapi.exec_interpreter( |
| interpid, |
| 'assert spam is True', |
| ) |
| self.assertEqual(rc, 0) |
| |
| |
| if __name__ == '__main__': |
| # Test needs to be a package, so we can do relative imports. |
| unittest.main() |
