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	 8291ae31dd
			
		
	
	
		8291ae31dd
		
			
		
	
	
	
	
		
			
			This PR makes some minor linting adjustments to the Lib/test module caught by [ruff](https://github.com/charliermarsh/ruff). The adjustments are all related to the `F541 f-string without any placeholders` issue. Issue: https://github.com/python/cpython/issues/103805 <!-- gh-issue-number: gh-103805 --> * Issue: gh-103805 <!-- /gh-issue-number --> --------- Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> Co-authored-by: Gregory P. Smith <greg@krypto.org>
		
			
				
	
	
		
			929 lines
		
	
	
	
		
			28 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			929 lines
		
	
	
	
		
			28 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| import contextlib
 | |
| import itertools
 | |
| import os
 | |
| import pickle
 | |
| import sys
 | |
| from textwrap import dedent
 | |
| import threading
 | |
| import unittest
 | |
| 
 | |
| import _testcapi
 | |
| from test import support
 | |
| from test.support import import_helper
 | |
| from test.support import script_helper
 | |
| 
 | |
| 
 | |
| interpreters = import_helper.import_module('_xxsubinterpreters')
 | |
| 
 | |
| 
 | |
| ##################################
 | |
| # helpers
 | |
| 
 | |
| def _captured_script(script):
 | |
|     r, w = os.pipe()
 | |
|     indented = script.replace('\n', '\n                ')
 | |
|     wrapped = dedent(f"""
 | |
|         import contextlib
 | |
|         with open({w}, 'w', encoding="utf-8") as spipe:
 | |
|             with contextlib.redirect_stdout(spipe):
 | |
|                 {indented}
 | |
|         """)
 | |
|     return wrapped, open(r, encoding="utf-8")
 | |
| 
 | |
| 
 | |
| def _run_output(interp, request, shared=None):
 | |
|     script, rpipe = _captured_script(request)
 | |
|     with rpipe:
 | |
|         interpreters.run_string(interp, script, shared)
 | |
|         return rpipe.read()
 | |
| 
 | |
| 
 | |
| def _wait_for_interp_to_run(interp, timeout=None):
 | |
|     # bpo-37224: Running this test file in multiprocesses will fail randomly.
 | |
|     # The failure reason is that the thread can't acquire the cpu to
 | |
|     # run subinterpreter eariler than the main thread in multiprocess.
 | |
|     if timeout is None:
 | |
|         timeout = support.SHORT_TIMEOUT
 | |
|     for _ in support.sleeping_retry(timeout, error=False):
 | |
|         if interpreters.is_running(interp):
 | |
|             break
 | |
|     else:
 | |
|         raise RuntimeError('interp is not running')
 | |
| 
 | |
| 
 | |
| @contextlib.contextmanager
 | |
| def _running(interp):
 | |
|     r, w = os.pipe()
 | |
|     def run():
 | |
|         interpreters.run_string(interp, dedent(f"""
 | |
|             # wait for "signal"
 | |
|             with open({r}, encoding="utf-8") as rpipe:
 | |
|                 rpipe.read()
 | |
|             """))
 | |
| 
 | |
|     t = threading.Thread(target=run)
 | |
|     t.start()
 | |
|     _wait_for_interp_to_run(interp)
 | |
| 
 | |
|     yield
 | |
| 
 | |
|     with open(w, 'w', encoding="utf-8") as spipe:
 | |
|         spipe.write('done')
 | |
|     t.join()
 | |
| 
 | |
| 
 | |
| def clean_up_interpreters():
 | |
|     for id in interpreters.list_all():
 | |
|         if id == 0:  # main
 | |
|             continue
 | |
|         try:
 | |
|             interpreters.destroy(id)
 | |
|         except RuntimeError:
 | |
|             pass  # already destroyed
 | |
| 
 | |
| 
 | |
| class TestBase(unittest.TestCase):
 | |
| 
 | |
|     def tearDown(self):
 | |
|         clean_up_interpreters()
 | |
| 
 | |
| 
 | |
| ##################################
 | |
| # misc. tests
 | |
| 
 | |
| class IsShareableTests(unittest.TestCase):
 | |
| 
 | |
|     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 ShareableTypeTests(unittest.TestCase):
 | |
| 
 | |
|     def _assert_values(self, values):
 | |
|         for obj in values:
 | |
|             with self.subTest(obj):
 | |
|                 xid = _testcapi.get_crossinterp_data(obj)
 | |
|                 got = _testcapi.restore_crossinterp_data(xid)
 | |
| 
 | |
|                 self.assertEqual(got, obj)
 | |
|                 self.assertIs(type(got), type(obj))
 | |
| 
 | |
|     def test_singletons(self):
 | |
|         for obj in [None]:
 | |
|             with self.subTest(obj):
 | |
|                 xid = _testcapi.get_crossinterp_data(obj)
 | |
|                 got = _testcapi.restore_crossinterp_data(xid)
 | |
| 
 | |
|                 # XXX What about between interpreters?
 | |
|                 self.assertIs(got, obj)
 | |
| 
 | |
|     def test_types(self):
 | |
|         self._assert_values([
 | |
|             b'spam',
 | |
|             9999,
 | |
|             ])
 | |
| 
 | |
|     def test_bytes(self):
 | |
|         self._assert_values(i.to_bytes(2, 'little', signed=True)
 | |
|                             for i in range(-1, 258))
 | |
| 
 | |
|     def test_strs(self):
 | |
|         self._assert_values(['hello world', '你好世界', ''])
 | |
| 
 | |
|     def test_int(self):
 | |
|         self._assert_values(itertools.chain(range(-1, 258),
 | |
|                                             [sys.maxsize, -sys.maxsize - 1]))
 | |
| 
 | |
|     def test_non_shareable_int(self):
 | |
|         ints = [
 | |
|             sys.maxsize + 1,
 | |
|             -sys.maxsize - 2,
 | |
|             2**1000,
 | |
|         ]
 | |
|         for i in ints:
 | |
|             with self.subTest(i):
 | |
|                 with self.assertRaises(OverflowError):
 | |
|                     _testcapi.get_crossinterp_data(i)
 | |
| 
 | |
| 
 | |
| class ModuleTests(TestBase):
 | |
| 
 | |
|     def test_import_in_interpreter(self):
 | |
|         _run_output(
 | |
|             interpreters.create(),
 | |
|             'import _xxsubinterpreters as _interpreters',
 | |
|         )
 | |
| 
 | |
| 
 | |
| ##################################
 | |
| # interpreter tests
 | |
| 
 | |
| class ListAllTests(TestBase):
 | |
| 
 | |
|     def test_initial(self):
 | |
|         main = interpreters.get_main()
 | |
|         ids = interpreters.list_all()
 | |
|         self.assertEqual(ids, [main])
 | |
| 
 | |
|     def test_after_creating(self):
 | |
|         main = interpreters.get_main()
 | |
|         first = interpreters.create()
 | |
|         second = interpreters.create()
 | |
|         ids = interpreters.list_all()
 | |
|         self.assertEqual(ids, [main, first, second])
 | |
| 
 | |
|     def test_after_destroying(self):
 | |
|         main = interpreters.get_main()
 | |
|         first = interpreters.create()
 | |
|         second = interpreters.create()
 | |
|         interpreters.destroy(first)
 | |
|         ids = interpreters.list_all()
 | |
|         self.assertEqual(ids, [main, second])
 | |
| 
 | |
| 
 | |
| class GetCurrentTests(TestBase):
 | |
| 
 | |
|     def test_main(self):
 | |
|         main = interpreters.get_main()
 | |
|         cur = interpreters.get_current()
 | |
|         self.assertEqual(cur, main)
 | |
|         self.assertIsInstance(cur, interpreters.InterpreterID)
 | |
| 
 | |
|     def test_subinterpreter(self):
 | |
|         main = interpreters.get_main()
 | |
|         interp = interpreters.create()
 | |
|         out = _run_output(interp, dedent("""
 | |
|             import _xxsubinterpreters as _interpreters
 | |
|             cur = _interpreters.get_current()
 | |
|             print(cur)
 | |
|             assert isinstance(cur, _interpreters.InterpreterID)
 | |
|             """))
 | |
|         cur = int(out.strip())
 | |
|         _, expected = interpreters.list_all()
 | |
|         self.assertEqual(cur, expected)
 | |
|         self.assertNotEqual(cur, main)
 | |
| 
 | |
| 
 | |
| class GetMainTests(TestBase):
 | |
| 
 | |
|     def test_from_main(self):
 | |
|         [expected] = interpreters.list_all()
 | |
|         main = interpreters.get_main()
 | |
|         self.assertEqual(main, expected)
 | |
|         self.assertIsInstance(main, interpreters.InterpreterID)
 | |
| 
 | |
|     def test_from_subinterpreter(self):
 | |
|         [expected] = interpreters.list_all()
 | |
|         interp = interpreters.create()
 | |
|         out = _run_output(interp, dedent("""
 | |
|             import _xxsubinterpreters as _interpreters
 | |
|             main = _interpreters.get_main()
 | |
|             print(main)
 | |
|             assert isinstance(main, _interpreters.InterpreterID)
 | |
|             """))
 | |
|         main = int(out.strip())
 | |
|         self.assertEqual(main, expected)
 | |
| 
 | |
| 
 | |
| class IsRunningTests(TestBase):
 | |
| 
 | |
|     def test_main(self):
 | |
|         main = interpreters.get_main()
 | |
|         self.assertTrue(interpreters.is_running(main))
 | |
| 
 | |
|     @unittest.skip('Fails on FreeBSD')
 | |
|     def test_subinterpreter(self):
 | |
|         interp = interpreters.create()
 | |
|         self.assertFalse(interpreters.is_running(interp))
 | |
| 
 | |
|         with _running(interp):
 | |
|             self.assertTrue(interpreters.is_running(interp))
 | |
|         self.assertFalse(interpreters.is_running(interp))
 | |
| 
 | |
|     def test_from_subinterpreter(self):
 | |
|         interp = interpreters.create()
 | |
|         out = _run_output(interp, dedent(f"""
 | |
|             import _xxsubinterpreters as _interpreters
 | |
|             if _interpreters.is_running({interp}):
 | |
|                 print(True)
 | |
|             else:
 | |
|                 print(False)
 | |
|             """))
 | |
|         self.assertEqual(out.strip(), 'True')
 | |
| 
 | |
|     def test_already_destroyed(self):
 | |
|         interp = interpreters.create()
 | |
|         interpreters.destroy(interp)
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.is_running(interp)
 | |
| 
 | |
|     def test_does_not_exist(self):
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.is_running(1_000_000)
 | |
| 
 | |
|     def test_bad_id(self):
 | |
|         with self.assertRaises(ValueError):
 | |
|             interpreters.is_running(-1)
 | |
| 
 | |
| 
 | |
| class InterpreterIDTests(TestBase):
 | |
| 
 | |
|     def test_with_int(self):
 | |
|         id = interpreters.InterpreterID(10, force=True)
 | |
| 
 | |
|         self.assertEqual(int(id), 10)
 | |
| 
 | |
|     def test_coerce_id(self):
 | |
|         class Int(str):
 | |
|             def __index__(self):
 | |
|                 return 10
 | |
| 
 | |
|         id = interpreters.InterpreterID(Int(), force=True)
 | |
|         self.assertEqual(int(id), 10)
 | |
| 
 | |
|     def test_bad_id(self):
 | |
|         self.assertRaises(TypeError, interpreters.InterpreterID, object())
 | |
|         self.assertRaises(TypeError, interpreters.InterpreterID, 10.0)
 | |
|         self.assertRaises(TypeError, interpreters.InterpreterID, '10')
 | |
|         self.assertRaises(TypeError, interpreters.InterpreterID, b'10')
 | |
|         self.assertRaises(ValueError, interpreters.InterpreterID, -1)
 | |
|         self.assertRaises(OverflowError, interpreters.InterpreterID, 2**64)
 | |
| 
 | |
|     def test_does_not_exist(self):
 | |
|         id = interpreters.create()
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.InterpreterID(int(id) + 1)  # unforced
 | |
| 
 | |
|     def test_str(self):
 | |
|         id = interpreters.InterpreterID(10, force=True)
 | |
|         self.assertEqual(str(id), '10')
 | |
| 
 | |
|     def test_repr(self):
 | |
|         id = interpreters.InterpreterID(10, force=True)
 | |
|         self.assertEqual(repr(id), 'InterpreterID(10)')
 | |
| 
 | |
|     def test_equality(self):
 | |
|         id1 = interpreters.create()
 | |
|         id2 = interpreters.InterpreterID(int(id1))
 | |
|         id3 = interpreters.create()
 | |
| 
 | |
|         self.assertTrue(id1 == id1)
 | |
|         self.assertTrue(id1 == id2)
 | |
|         self.assertTrue(id1 == int(id1))
 | |
|         self.assertTrue(int(id1) == id1)
 | |
|         self.assertTrue(id1 == float(int(id1)))
 | |
|         self.assertTrue(float(int(id1)) == id1)
 | |
|         self.assertFalse(id1 == float(int(id1)) + 0.1)
 | |
|         self.assertFalse(id1 == str(int(id1)))
 | |
|         self.assertFalse(id1 == 2**1000)
 | |
|         self.assertFalse(id1 == float('inf'))
 | |
|         self.assertFalse(id1 == 'spam')
 | |
|         self.assertFalse(id1 == id3)
 | |
| 
 | |
|         self.assertFalse(id1 != id1)
 | |
|         self.assertFalse(id1 != id2)
 | |
|         self.assertTrue(id1 != id3)
 | |
| 
 | |
| 
 | |
| class CreateTests(TestBase):
 | |
| 
 | |
|     def test_in_main(self):
 | |
|         id = interpreters.create()
 | |
|         self.assertIsInstance(id, interpreters.InterpreterID)
 | |
| 
 | |
|         self.assertIn(id, interpreters.list_all())
 | |
| 
 | |
|     @unittest.skip('enable this test when working on pystate.c')
 | |
|     def test_unique_id(self):
 | |
|         seen = set()
 | |
|         for _ in range(100):
 | |
|             id = interpreters.create()
 | |
|             interpreters.destroy(id)
 | |
|             seen.add(id)
 | |
| 
 | |
|         self.assertEqual(len(seen), 100)
 | |
| 
 | |
|     def test_in_thread(self):
 | |
|         lock = threading.Lock()
 | |
|         id = None
 | |
|         def f():
 | |
|             nonlocal id
 | |
|             id = interpreters.create()
 | |
|             lock.acquire()
 | |
|             lock.release()
 | |
| 
 | |
|         t = threading.Thread(target=f)
 | |
|         with lock:
 | |
|             t.start()
 | |
|         t.join()
 | |
|         self.assertIn(id, interpreters.list_all())
 | |
| 
 | |
|     def test_in_subinterpreter(self):
 | |
|         main, = interpreters.list_all()
 | |
|         id1 = interpreters.create()
 | |
|         out = _run_output(id1, dedent("""
 | |
|             import _xxsubinterpreters as _interpreters
 | |
|             id = _interpreters.create()
 | |
|             print(id)
 | |
|             assert isinstance(id, _interpreters.InterpreterID)
 | |
|             """))
 | |
|         id2 = int(out.strip())
 | |
| 
 | |
|         self.assertEqual(set(interpreters.list_all()), {main, id1, id2})
 | |
| 
 | |
|     def test_in_threaded_subinterpreter(self):
 | |
|         main, = interpreters.list_all()
 | |
|         id1 = interpreters.create()
 | |
|         id2 = None
 | |
|         def f():
 | |
|             nonlocal id2
 | |
|             out = _run_output(id1, dedent("""
 | |
|                 import _xxsubinterpreters as _interpreters
 | |
|                 id = _interpreters.create()
 | |
|                 print(id)
 | |
|                 """))
 | |
|             id2 = int(out.strip())
 | |
| 
 | |
|         t = threading.Thread(target=f)
 | |
|         t.start()
 | |
|         t.join()
 | |
| 
 | |
|         self.assertEqual(set(interpreters.list_all()), {main, id1, id2})
 | |
| 
 | |
|     def test_after_destroy_all(self):
 | |
|         before = set(interpreters.list_all())
 | |
|         # Create 3 subinterpreters.
 | |
|         ids = []
 | |
|         for _ in range(3):
 | |
|             id = interpreters.create()
 | |
|             ids.append(id)
 | |
|         # Now destroy them.
 | |
|         for id in ids:
 | |
|             interpreters.destroy(id)
 | |
|         # Finally, create another.
 | |
|         id = interpreters.create()
 | |
|         self.assertEqual(set(interpreters.list_all()), before | {id})
 | |
| 
 | |
|     def test_after_destroy_some(self):
 | |
|         before = set(interpreters.list_all())
 | |
|         # Create 3 subinterpreters.
 | |
|         id1 = interpreters.create()
 | |
|         id2 = interpreters.create()
 | |
|         id3 = interpreters.create()
 | |
|         # Now destroy 2 of them.
 | |
|         interpreters.destroy(id1)
 | |
|         interpreters.destroy(id3)
 | |
|         # Finally, create another.
 | |
|         id = interpreters.create()
 | |
|         self.assertEqual(set(interpreters.list_all()), before | {id, id2})
 | |
| 
 | |
| 
 | |
| class DestroyTests(TestBase):
 | |
| 
 | |
|     def test_one(self):
 | |
|         id1 = interpreters.create()
 | |
|         id2 = interpreters.create()
 | |
|         id3 = interpreters.create()
 | |
|         self.assertIn(id2, interpreters.list_all())
 | |
|         interpreters.destroy(id2)
 | |
|         self.assertNotIn(id2, interpreters.list_all())
 | |
|         self.assertIn(id1, interpreters.list_all())
 | |
|         self.assertIn(id3, interpreters.list_all())
 | |
| 
 | |
|     def test_all(self):
 | |
|         before = set(interpreters.list_all())
 | |
|         ids = set()
 | |
|         for _ in range(3):
 | |
|             id = interpreters.create()
 | |
|             ids.add(id)
 | |
|         self.assertEqual(set(interpreters.list_all()), before | ids)
 | |
|         for id in ids:
 | |
|             interpreters.destroy(id)
 | |
|         self.assertEqual(set(interpreters.list_all()), before)
 | |
| 
 | |
|     def test_main(self):
 | |
|         main, = interpreters.list_all()
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.destroy(main)
 | |
| 
 | |
|         def f():
 | |
|             with self.assertRaises(RuntimeError):
 | |
|                 interpreters.destroy(main)
 | |
| 
 | |
|         t = threading.Thread(target=f)
 | |
|         t.start()
 | |
|         t.join()
 | |
| 
 | |
|     def test_already_destroyed(self):
 | |
|         id = interpreters.create()
 | |
|         interpreters.destroy(id)
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.destroy(id)
 | |
| 
 | |
|     def test_does_not_exist(self):
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.destroy(1_000_000)
 | |
| 
 | |
|     def test_bad_id(self):
 | |
|         with self.assertRaises(ValueError):
 | |
|             interpreters.destroy(-1)
 | |
| 
 | |
|     def test_from_current(self):
 | |
|         main, = interpreters.list_all()
 | |
|         id = interpreters.create()
 | |
|         script = dedent(f"""
 | |
|             import _xxsubinterpreters as _interpreters
 | |
|             try:
 | |
|                 _interpreters.destroy({id})
 | |
|             except RuntimeError:
 | |
|                 pass
 | |
|             """)
 | |
| 
 | |
|         interpreters.run_string(id, script)
 | |
|         self.assertEqual(set(interpreters.list_all()), {main, id})
 | |
| 
 | |
|     def test_from_sibling(self):
 | |
|         main, = interpreters.list_all()
 | |
|         id1 = interpreters.create()
 | |
|         id2 = interpreters.create()
 | |
|         script = dedent(f"""
 | |
|             import _xxsubinterpreters as _interpreters
 | |
|             _interpreters.destroy({id2})
 | |
|             """)
 | |
|         interpreters.run_string(id1, script)
 | |
| 
 | |
|         self.assertEqual(set(interpreters.list_all()), {main, id1})
 | |
| 
 | |
|     def test_from_other_thread(self):
 | |
|         id = interpreters.create()
 | |
|         def f():
 | |
|             interpreters.destroy(id)
 | |
| 
 | |
|         t = threading.Thread(target=f)
 | |
|         t.start()
 | |
|         t.join()
 | |
| 
 | |
|     def test_still_running(self):
 | |
|         main, = interpreters.list_all()
 | |
|         interp = interpreters.create()
 | |
|         with _running(interp):
 | |
|             self.assertTrue(interpreters.is_running(interp),
 | |
|                             msg=f"Interp {interp} should be running before destruction.")
 | |
| 
 | |
|             with self.assertRaises(RuntimeError,
 | |
|                                    msg=f"Should not be able to destroy interp {interp} while it's still running."):
 | |
|                 interpreters.destroy(interp)
 | |
|             self.assertTrue(interpreters.is_running(interp))
 | |
| 
 | |
| 
 | |
| class RunStringTests(TestBase):
 | |
| 
 | |
|     def setUp(self):
 | |
|         super().setUp()
 | |
|         self.id = interpreters.create()
 | |
| 
 | |
|     def test_success(self):
 | |
|         script, file = _captured_script('print("it worked!", end="")')
 | |
|         with file:
 | |
|             interpreters.run_string(self.id, 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():
 | |
|                 interpreters.run_string(self.id, script)
 | |
| 
 | |
|             t = threading.Thread(target=f)
 | |
|             t.start()
 | |
|             t.join()
 | |
|             out = file.read()
 | |
| 
 | |
|         self.assertEqual(out, 'it worked!')
 | |
| 
 | |
|     def test_create_thread(self):
 | |
|         subinterp = interpreters.create()
 | |
|         script, file = _captured_script("""
 | |
|             import threading
 | |
|             def f():
 | |
|                 print('it worked!', end='')
 | |
| 
 | |
|             t = threading.Thread(target=f)
 | |
|             t.start()
 | |
|             t.join()
 | |
|             """)
 | |
|         with file:
 | |
|             interpreters.run_string(subinterp, script)
 | |
|             out = file.read()
 | |
| 
 | |
|         self.assertEqual(out, 'it worked!')
 | |
| 
 | |
|     def test_create_daemon_thread(self):
 | |
|         with self.subTest('isolated'):
 | |
|             expected = 'spam spam spam spam spam'
 | |
|             subinterp = interpreters.create(isolated=True)
 | |
|             script, file = _captured_script(f"""
 | |
|                 import threading
 | |
|                 def f():
 | |
|                     print('it worked!', end='')
 | |
| 
 | |
|                 try:
 | |
|                     t = threading.Thread(target=f, daemon=True)
 | |
|                     t.start()
 | |
|                     t.join()
 | |
|                 except RuntimeError:
 | |
|                     print('{expected}', end='')
 | |
|                 """)
 | |
|             with file:
 | |
|                 interpreters.run_string(subinterp, script)
 | |
|                 out = file.read()
 | |
| 
 | |
|             self.assertEqual(out, expected)
 | |
| 
 | |
|         with self.subTest('not isolated'):
 | |
|             subinterp = interpreters.create(isolated=False)
 | |
|             script, file = _captured_script("""
 | |
|                 import threading
 | |
|                 def f():
 | |
|                     print('it worked!', end='')
 | |
| 
 | |
|                 t = threading.Thread(target=f, daemon=True)
 | |
|                 t.start()
 | |
|                 t.join()
 | |
|                 """)
 | |
|             with file:
 | |
|                 interpreters.run_string(subinterp, script)
 | |
|                 out = file.read()
 | |
| 
 | |
|             self.assertEqual(out, 'it worked!')
 | |
| 
 | |
|     def test_shareable_types(self):
 | |
|         interp = interpreters.create()
 | |
|         objects = [
 | |
|             None,
 | |
|             'spam',
 | |
|             b'spam',
 | |
|             42,
 | |
|         ]
 | |
|         for obj in objects:
 | |
|             with self.subTest(obj):
 | |
|                 interpreters.run_string(
 | |
|                     interp,
 | |
|                     f'assert(obj == {obj!r})',
 | |
|                     shared=dict(obj=obj),
 | |
|                 )
 | |
| 
 | |
|     def test_os_exec(self):
 | |
|         expected = 'spam spam spam spam spam'
 | |
|         subinterp = interpreters.create()
 | |
|         script, file = _captured_script(f"""
 | |
|             import os, sys
 | |
|             try:
 | |
|                 os.execl(sys.executable)
 | |
|             except RuntimeError:
 | |
|                 print('{expected}', end='')
 | |
|             """)
 | |
|         with file:
 | |
|             interpreters.run_string(subinterp, script)
 | |
|             out = file.read()
 | |
| 
 | |
|         self.assertEqual(out, expected)
 | |
| 
 | |
|     @support.requires_fork()
 | |
|     def test_fork(self):
 | |
|         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}')
 | |
|                 """)
 | |
|             interpreters.run_string(self.id, script)
 | |
| 
 | |
|             file.seek(0)
 | |
|             content = file.read()
 | |
|             self.assertEqual(content, expected)
 | |
| 
 | |
|     def test_already_running(self):
 | |
|         with _running(self.id):
 | |
|             with self.assertRaises(RuntimeError):
 | |
|                 interpreters.run_string(self.id, 'print("spam")')
 | |
| 
 | |
|     def test_does_not_exist(self):
 | |
|         id = 0
 | |
|         while id in interpreters.list_all():
 | |
|             id += 1
 | |
|         with self.assertRaises(RuntimeError):
 | |
|             interpreters.run_string(id, 'print("spam")')
 | |
| 
 | |
|     def test_error_id(self):
 | |
|         with self.assertRaises(ValueError):
 | |
|             interpreters.run_string(-1, 'print("spam")')
 | |
| 
 | |
|     def test_bad_id(self):
 | |
|         with self.assertRaises(TypeError):
 | |
|             interpreters.run_string('spam', 'print("spam")')
 | |
| 
 | |
|     def test_bad_script(self):
 | |
|         with self.assertRaises(TypeError):
 | |
|             interpreters.run_string(self.id, 10)
 | |
| 
 | |
|     def test_bytes_for_script(self):
 | |
|         with self.assertRaises(TypeError):
 | |
|             interpreters.run_string(self.id, b'print("spam")')
 | |
| 
 | |
|     @contextlib.contextmanager
 | |
|     def assert_run_failed(self, exctype, msg=None):
 | |
|         with self.assertRaises(interpreters.RunFailedError) as caught:
 | |
|             yield
 | |
|         if msg is None:
 | |
|             self.assertEqual(str(caught.exception).split(':')[0],
 | |
|                              str(exctype))
 | |
|         else:
 | |
|             self.assertEqual(str(caught.exception),
 | |
|                              "{}: {}".format(exctype, msg))
 | |
| 
 | |
|     def test_invalid_syntax(self):
 | |
|         with self.assert_run_failed(SyntaxError):
 | |
|             # missing close paren
 | |
|             interpreters.run_string(self.id, 'print("spam"')
 | |
| 
 | |
|     def test_failure(self):
 | |
|         with self.assert_run_failed(Exception, 'spam'):
 | |
|             interpreters.run_string(self.id, 'raise Exception("spam")')
 | |
| 
 | |
|     def test_SystemExit(self):
 | |
|         with self.assert_run_failed(SystemExit, '42'):
 | |
|             interpreters.run_string(self.id, 'raise SystemExit(42)')
 | |
| 
 | |
|     def test_sys_exit(self):
 | |
|         with self.assert_run_failed(SystemExit):
 | |
|             interpreters.run_string(self.id, dedent("""
 | |
|                 import sys
 | |
|                 sys.exit()
 | |
|                 """))
 | |
| 
 | |
|         with self.assert_run_failed(SystemExit, '42'):
 | |
|             interpreters.run_string(self.id, dedent("""
 | |
|                 import sys
 | |
|                 sys.exit(42)
 | |
|                 """))
 | |
| 
 | |
|     def test_with_shared(self):
 | |
|         r, w = os.pipe()
 | |
| 
 | |
|         shared = {
 | |
|                 'spam': b'ham',
 | |
|                 'eggs': b'-1',
 | |
|                 'cheddar': None,
 | |
|                 }
 | |
|         script = dedent(f"""
 | |
|             eggs = int(eggs)
 | |
|             spam = 42
 | |
|             result = spam + eggs
 | |
| 
 | |
|             ns = dict(vars())
 | |
|             del ns['__builtins__']
 | |
|             import pickle
 | |
|             with open({w}, 'wb') as chan:
 | |
|                 pickle.dump(ns, chan)
 | |
|             """)
 | |
|         interpreters.run_string(self.id, script, shared)
 | |
|         with open(r, 'rb') as chan:
 | |
|             ns = pickle.load(chan)
 | |
| 
 | |
|         self.assertEqual(ns['spam'], 42)
 | |
|         self.assertEqual(ns['eggs'], -1)
 | |
|         self.assertEqual(ns['result'], 41)
 | |
|         self.assertIsNone(ns['cheddar'])
 | |
| 
 | |
|     def test_shared_overwrites(self):
 | |
|         interpreters.run_string(self.id, dedent("""
 | |
|             spam = 'eggs'
 | |
|             ns1 = dict(vars())
 | |
|             del ns1['__builtins__']
 | |
|             """))
 | |
| 
 | |
|         shared = {'spam': b'ham'}
 | |
|         script = dedent("""
 | |
|             ns2 = dict(vars())
 | |
|             del ns2['__builtins__']
 | |
|         """)
 | |
|         interpreters.run_string(self.id, script, shared)
 | |
| 
 | |
|         r, w = os.pipe()
 | |
|         script = dedent(f"""
 | |
|             ns = dict(vars())
 | |
|             del ns['__builtins__']
 | |
|             import pickle
 | |
|             with open({w}, 'wb') as chan:
 | |
|                 pickle.dump(ns, chan)
 | |
|             """)
 | |
|         interpreters.run_string(self.id, script)
 | |
|         with open(r, 'rb') as chan:
 | |
|             ns = pickle.load(chan)
 | |
| 
 | |
|         self.assertEqual(ns['ns1']['spam'], 'eggs')
 | |
|         self.assertEqual(ns['ns2']['spam'], b'ham')
 | |
|         self.assertEqual(ns['spam'], b'ham')
 | |
| 
 | |
|     def test_shared_overwrites_default_vars(self):
 | |
|         r, w = os.pipe()
 | |
| 
 | |
|         shared = {'__name__': b'not __main__'}
 | |
|         script = dedent(f"""
 | |
|             spam = 42
 | |
| 
 | |
|             ns = dict(vars())
 | |
|             del ns['__builtins__']
 | |
|             import pickle
 | |
|             with open({w}, 'wb') as chan:
 | |
|                 pickle.dump(ns, chan)
 | |
|             """)
 | |
|         interpreters.run_string(self.id, script, shared)
 | |
|         with open(r, 'rb') as chan:
 | |
|             ns = pickle.load(chan)
 | |
| 
 | |
|         self.assertEqual(ns['__name__'], b'not __main__')
 | |
| 
 | |
|     def test_main_reused(self):
 | |
|         r, w = os.pipe()
 | |
|         interpreters.run_string(self.id, dedent(f"""
 | |
|             spam = True
 | |
| 
 | |
|             ns = dict(vars())
 | |
|             del ns['__builtins__']
 | |
|             import pickle
 | |
|             with open({w}, 'wb') as chan:
 | |
|                 pickle.dump(ns, chan)
 | |
|             del ns, pickle, chan
 | |
|             """))
 | |
|         with open(r, 'rb') as chan:
 | |
|             ns1 = pickle.load(chan)
 | |
| 
 | |
|         r, w = os.pipe()
 | |
|         interpreters.run_string(self.id, dedent(f"""
 | |
|             eggs = False
 | |
| 
 | |
|             ns = dict(vars())
 | |
|             del ns['__builtins__']
 | |
|             import pickle
 | |
|             with open({w}, 'wb') as chan:
 | |
|                 pickle.dump(ns, chan)
 | |
|             """))
 | |
|         with open(r, 'rb') as chan:
 | |
|             ns2 = pickle.load(chan)
 | |
| 
 | |
|         self.assertIn('spam', ns1)
 | |
|         self.assertNotIn('eggs', ns1)
 | |
|         self.assertIn('eggs', ns2)
 | |
|         self.assertIn('spam', ns2)
 | |
| 
 | |
|     def test_execution_namespace_is_main(self):
 | |
|         r, w = os.pipe()
 | |
| 
 | |
|         script = dedent(f"""
 | |
|             spam = 42
 | |
| 
 | |
|             ns = dict(vars())
 | |
|             ns['__builtins__'] = str(ns['__builtins__'])
 | |
|             import pickle
 | |
|             with open({w}, 'wb') as chan:
 | |
|                 pickle.dump(ns, chan)
 | |
|             """)
 | |
|         interpreters.run_string(self.id, script)
 | |
|         with open(r, 'rb') as chan:
 | |
|             ns = pickle.load(chan)
 | |
| 
 | |
|         ns.pop('__builtins__')
 | |
|         ns.pop('__loader__')
 | |
|         self.assertEqual(ns, {
 | |
|             '__name__': '__main__',
 | |
|             '__annotations__': {},
 | |
|             '__doc__': None,
 | |
|             '__package__': None,
 | |
|             '__spec__': None,
 | |
|             'spam': 42,
 | |
|             })
 | |
| 
 | |
|     # XXX Fix this test!
 | |
|     @unittest.skip('blocking forever')
 | |
|     def test_still_running_at_exit(self):
 | |
|         script = dedent("""
 | |
|         from textwrap import dedent
 | |
|         import threading
 | |
|         import _xxsubinterpreters as _interpreters
 | |
|         id = _interpreters.create()
 | |
|         def f():
 | |
|             _interpreters.run_string(id, dedent('''
 | |
|                 import time
 | |
|                 # Give plenty of time for the main interpreter to finish.
 | |
|                 time.sleep(1_000_000)
 | |
|                 '''))
 | |
| 
 | |
|         t = threading.Thread(target=f)
 | |
|         t.start()
 | |
|         """)
 | |
|         with support.temp_dir() as dirname:
 | |
|             filename = script_helper.make_script(dirname, 'interp', script)
 | |
|             with script_helper.spawn_python(filename) as proc:
 | |
|                 retcode = proc.wait()
 | |
| 
 | |
|         self.assertEqual(retcode, 0)
 | |
| 
 | |
| 
 | |
| if __name__ == '__main__':
 | |
|     unittest.main()
 |