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Revert "bpo-32604: PEP 554 for use in test suite (GH-19985)" (#20465)
This reverts commit 9d17cbf33d.
This commit is contained in:
Pablo Galindo
GitHub
parent
76ef255bde
commit
7d80b35af1
4 changed files with 0 additions and 865 deletions
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@ -1,535 +0,0 @@
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import contextlib
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import os
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import threading
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from textwrap import dedent
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import unittest
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import time
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import _xxsubinterpreters as _interpreters
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from test.support import interpreters
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def _captured_script(script):
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r, w = os.pipe()
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indented = script.replace('\n', '\n ')
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wrapped = dedent(f"""
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import contextlib
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with open({w}, 'w') as spipe:
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with contextlib.redirect_stdout(spipe):
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{indented}
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""")
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return wrapped, open(r)
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def clean_up_interpreters():
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for interp in interpreters.list_all():
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if interp.id == 0: # main
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continue
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try:
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interp.close()
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except RuntimeError:
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pass # already destroyed
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def _run_output(interp, request, shared=None):
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script, rpipe = _captured_script(request)
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with rpipe:
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interp.run(script)
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return rpipe.read()
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@contextlib.contextmanager
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def _running(interp):
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r, w = os.pipe()
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def run():
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interp.run(dedent(f"""
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# wait for "signal"
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with open({r}) as rpipe:
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rpipe.read()
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"""))
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t = threading.Thread(target=run)
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t.start()
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yield
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with open(w, 'w') as spipe:
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spipe.write('done')
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t.join()
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class TestBase(unittest.TestCase):
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def tearDown(self):
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clean_up_interpreters()
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class CreateTests(TestBase):
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def test_in_main(self):
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interp = interpreters.create()
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lst = interpreters.list_all()
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self.assertEqual(interp.id, lst[1].id)
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def test_in_thread(self):
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lock = threading.Lock()
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id = None
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interp = interpreters.create()
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lst = interpreters.list_all()
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def f():
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nonlocal id
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id = interp.id
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lock.acquire()
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lock.release()
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t = threading.Thread(target=f)
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with lock:
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t.start()
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t.join()
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self.assertEqual(interp.id, lst[1].id)
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def test_in_subinterpreter(self):
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main, = interpreters.list_all()
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interp = interpreters.create()
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out = _run_output(interp, dedent("""
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from test.support import interpreters
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interp = interpreters.create()
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print(interp)
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"""))
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interp2 = out.strip()
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self.assertEqual(len(set(interpreters.list_all())), len({main, interp, interp2}))
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def test_after_destroy_all(self):
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before = set(interpreters.list_all())
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# Create 3 subinterpreters.
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interp_lst = []
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for _ in range(3):
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interps = interpreters.create()
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interp_lst.append(interps)
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# Now destroy them.
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for interp in interp_lst:
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interp.close()
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# Finally, create another.
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interp = interpreters.create()
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self.assertEqual(len(set(interpreters.list_all())), len(before | {interp}))
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def test_after_destroy_some(self):
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before = set(interpreters.list_all())
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# Create 3 subinterpreters.
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interp1 = interpreters.create()
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interp2 = interpreters.create()
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interp3 = interpreters.create()
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# Now destroy 2 of them.
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interp1.close()
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interp2.close()
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# Finally, create another.
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interp = interpreters.create()
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self.assertEqual(len(set(interpreters.list_all())), len(before | {interp3, interp}))
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class GetCurrentTests(TestBase):
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def test_main(self):
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main_interp_id = _interpreters.get_main()
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cur_interp_id = interpreters.get_current().id
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self.assertEqual(cur_interp_id, main_interp_id)
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def test_subinterpreter(self):
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main = _interpreters.get_main()
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interp = interpreters.create()
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out = _run_output(interp, dedent("""
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from test.support import interpreters
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cur = interpreters.get_current()
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print(cur)
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"""))
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cur = out.strip()
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self.assertNotEqual(cur, main)
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class ListAllTests(TestBase):
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def test_initial(self):
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interps = interpreters.list_all()
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self.assertEqual(1, len(interps))
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def test_after_creating(self):
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main = interpreters.get_current()
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first = interpreters.create()
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second = interpreters.create()
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ids = []
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for interp in interpreters.list_all():
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ids.append(interp.id)
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self.assertEqual(ids, [main.id, first.id, second.id])
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def test_after_destroying(self):
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main = interpreters.get_current()
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first = interpreters.create()
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second = interpreters.create()
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first.close()
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ids = []
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for interp in interpreters.list_all():
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ids.append(interp.id)
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self.assertEqual(ids, [main.id, second.id])
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class TestInterpreterId(TestBase):
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def test_in_main(self):
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main = interpreters.get_current()
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self.assertEqual(0, main.id)
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def test_with_custom_num(self):
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interp = interpreters.Interpreter(1)
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self.assertEqual(1, interp.id)
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def test_for_readonly_property(self):
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interp = interpreters.Interpreter(1)
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with self.assertRaises(AttributeError):
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interp.id = 2
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class TestInterpreterIsRunning(TestBase):
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def test_main(self):
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main = interpreters.get_current()
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self.assertTrue(main.is_running())
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def test_subinterpreter(self):
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interp = interpreters.create()
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self.assertFalse(interp.is_running())
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with _running(interp):
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self.assertTrue(interp.is_running())
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self.assertFalse(interp.is_running())
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def test_from_subinterpreter(self):
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interp = interpreters.create()
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out = _run_output(interp, dedent(f"""
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import _xxsubinterpreters as _interpreters
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if _interpreters.is_running({interp.id}):
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print(True)
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else:
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print(False)
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"""))
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self.assertEqual(out.strip(), 'True')
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def test_already_destroyed(self):
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interp = interpreters.create()
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interp.close()
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with self.assertRaises(RuntimeError):
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interp.is_running()
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class TestInterpreterDestroy(TestBase):
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def test_basic(self):
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interp1 = interpreters.create()
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interp2 = interpreters.create()
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interp3 = interpreters.create()
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self.assertEqual(4, len(interpreters.list_all()))
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interp2.close()
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self.assertEqual(3, len(interpreters.list_all()))
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def test_all(self):
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before = set(interpreters.list_all())
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interps = set()
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for _ in range(3):
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interp = interpreters.create()
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interps.add(interp)
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self.assertEqual(len(set(interpreters.list_all())), len(before | interps))
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for interp in interps:
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interp.close()
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self.assertEqual(len(set(interpreters.list_all())), len(before))
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def test_main(self):
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main, = interpreters.list_all()
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with self.assertRaises(RuntimeError):
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main.close()
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def f():
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with self.assertRaises(RuntimeError):
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main.close()
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t = threading.Thread(target=f)
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t.start()
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t.join()
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def test_already_destroyed(self):
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interp = interpreters.create()
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interp.close()
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with self.assertRaises(RuntimeError):
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interp.close()
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def test_from_current(self):
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main, = interpreters.list_all()
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interp = interpreters.create()
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script = dedent(f"""
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from test.support import interpreters
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try:
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main = interpreters.get_current()
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main.close()
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except RuntimeError:
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pass
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""")
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interp.run(script)
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self.assertEqual(len(set(interpreters.list_all())), len({main, interp}))
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def test_from_sibling(self):
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main, = interpreters.list_all()
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interp1 = interpreters.create()
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script = dedent(f"""
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from test.support import interpreters
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interp2 = interpreters.create()
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interp2.close()
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""")
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interp1.run(script)
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self.assertEqual(len(set(interpreters.list_all())), len({main, interp1}))
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def test_from_other_thread(self):
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interp = interpreters.create()
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def f():
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interp.close()
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t = threading.Thread(target=f)
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t.start()
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t.join()
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def test_still_running(self):
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main, = interpreters.list_all()
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interp = interpreters.create()
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with _running(interp):
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with self.assertRaises(RuntimeError):
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interp.close()
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self.assertTrue(interp.is_running())
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class TestInterpreterRun(TestBase):
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SCRIPT = dedent("""
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with open('{}', 'w') as out:
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out.write('{}')
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""")
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FILENAME = 'spam'
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def setUp(self):
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super().setUp()
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self.interp = interpreters.create()
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self._fs = None
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def tearDown(self):
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if self._fs is not None:
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self._fs.close()
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super().tearDown()
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@property
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def fs(self):
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if self._fs is None:
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self._fs = FSFixture(self)
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return self._fs
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def test_success(self):
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script, file = _captured_script('print("it worked!", end="")')
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with file:
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self.interp.run(script)
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out = file.read()
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self.assertEqual(out, 'it worked!')
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def test_in_thread(self):
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script, file = _captured_script('print("it worked!", end="")')
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with file:
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def f():
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self.interp.run(script)
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t = threading.Thread(target=f)
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t.start()
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t.join()
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out = file.read()
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self.assertEqual(out, 'it worked!')
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@unittest.skipUnless(hasattr(os, 'fork'), "test needs os.fork()")
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def test_fork(self):
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import tempfile
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with tempfile.NamedTemporaryFile('w+') as file:
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file.write('')
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file.flush()
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expected = 'spam spam spam spam spam'
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script = dedent(f"""
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import os
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try:
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os.fork()
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except RuntimeError:
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with open('{file.name}', 'w') as out:
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out.write('{expected}')
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""")
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self.interp.run(script)
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file.seek(0)
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content = file.read()
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self.assertEqual(content, expected)
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def test_already_running(self):
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with _running(self.interp):
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with self.assertRaises(RuntimeError):
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self.interp.run('print("spam")')
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def test_bad_script(self):
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with self.assertRaises(TypeError):
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self.interp.run(10)
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def test_bytes_for_script(self):
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with self.assertRaises(TypeError):
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self.interp.run(b'print("spam")')
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class TestIsShareable(TestBase):
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def test_default_shareables(self):
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shareables = [
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# singletons
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None,
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# builtin objects
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b'spam',
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'spam',
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10,
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-10,
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]
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for obj in shareables:
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with self.subTest(obj):
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self.assertTrue(
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interpreters.is_shareable(obj))
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def test_not_shareable(self):
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class Cheese:
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def __init__(self, name):
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self.name = name
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def __str__(self):
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return self.name
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class SubBytes(bytes):
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"""A subclass of a shareable type."""
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not_shareables = [
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# singletons
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True,
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False,
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NotImplemented,
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...,
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# builtin types and objects
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type,
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object,
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object(),
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Exception(),
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100.0,
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# user-defined types and objects
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Cheese,
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Cheese('Wensleydale'),
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SubBytes(b'spam'),
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]
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for obj in not_shareables:
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with self.subTest(repr(obj)):
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self.assertFalse(
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interpreters.is_shareable(obj))
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class TestChannel(TestBase):
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def test_create_cid(self):
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r, s = interpreters.create_channel()
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self.assertIsInstance(r, interpreters.RecvChannel)
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self.assertIsInstance(s, interpreters.SendChannel)
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def test_sequential_ids(self):
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before = interpreters.list_all_channels()
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channels1 = interpreters.create_channel()
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channels2 = interpreters.create_channel()
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channels3 = interpreters.create_channel()
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after = interpreters.list_all_channels()
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self.assertEqual(len(set(after) - set(before)),
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len({channels1, channels2, channels3}))
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class TestSendRecv(TestBase):
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def test_send_recv_main(self):
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r, s = interpreters.create_channel()
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orig = b'spam'
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s.send(orig)
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obj = r.recv()
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self.assertEqual(obj, orig)
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self.assertIsNot(obj, orig)
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def test_send_recv_same_interpreter(self):
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interp = interpreters.create()
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out = _run_output(interp, dedent("""
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from test.support import interpreters
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r, s = interpreters.create_channel()
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orig = b'spam'
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s.send(orig)
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obj = r.recv()
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assert obj is not orig
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assert obj == orig
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"""))
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def test_send_recv_different_threads(self):
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r, s = interpreters.create_channel()
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def f():
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while True:
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try:
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obj = r.recv()
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break
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except interpreters.ChannelEmptyError:
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time.sleep(0.1)
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s.send(obj)
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t = threading.Thread(target=f)
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t.start()
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s.send(b'spam')
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t.join()
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obj = r.recv()
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self.assertEqual(obj, b'spam')
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def test_send_recv_nowait_main(self):
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r, s = interpreters.create_channel()
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orig = b'spam'
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s.send(orig)
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obj = r.recv_nowait()
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self.assertEqual(obj, orig)
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self.assertIsNot(obj, orig)
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def test_send_recv_nowait_same_interpreter(self):
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interp = interpreters.create()
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out = _run_output(interp, dedent("""
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from test.support import interpreters
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r, s = interpreters.create_channel()
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orig = b'spam'
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s.send(orig)
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obj = r.recv_nowait()
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assert obj is not orig
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assert obj == orig
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"""))
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r, s = interpreters.create_channel()
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def f():
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while True:
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try:
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obj = r.recv_nowait()
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break
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except _interpreters.ChannelEmptyError:
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time.sleep(0.1)
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s.send(obj)
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