from contextlib import (
asynccontextmanager, AbstractAsyncContextManager,
AsyncExitStack, nullcontext, aclosing, contextmanager)
-import functools
from test import support
import unittest
import traceback
support.requires_working_socket(module=True)
-def _async_test(func):
- """Decorator to turn an async function into a test case."""
- @functools.wraps(func)
- def wrapper(*args, **kwargs):
- coro = func(*args, **kwargs)
- asyncio.run(coro)
- return wrapper
-
def tearDownModule():
asyncio.set_event_loop_policy(None)
-class TestAbstractAsyncContextManager(unittest.TestCase):
+class TestAbstractAsyncContextManager(unittest.IsolatedAsyncioTestCase):
- @_async_test
async def test_enter(self):
class DefaultEnter(AbstractAsyncContextManager):
async def __aexit__(self, *args):
async with manager as context:
self.assertIs(manager, context)
- @_async_test
async def test_slots(self):
class DefaultAsyncContextManager(AbstractAsyncContextManager):
__slots__ = ()
manager = DefaultAsyncContextManager()
manager.var = 42
- @_async_test
async def test_async_gen_propagates_generator_exit(self):
# A regression test for https://bugs.python.org/issue33786.
self.assertFalse(issubclass(NoneAexit, AbstractAsyncContextManager))
-class AsyncContextManagerTestCase(unittest.TestCase):
+class AsyncContextManagerTestCase(unittest.IsolatedAsyncioTestCase):
- @_async_test
async def test_contextmanager_plain(self):
state = []
@asynccontextmanager
state.append(x)
self.assertEqual(state, [1, 42, 999])
- @_async_test
async def test_contextmanager_finally(self):
state = []
@asynccontextmanager
raise ZeroDivisionError()
self.assertEqual(state, [1, 42, 999])
- @_async_test
async def test_contextmanager_traceback(self):
@asynccontextmanager
async def f():
self.assertEqual(frames[0].name, 'test_contextmanager_traceback')
self.assertEqual(frames[0].line, 'raise stop_exc')
- @_async_test
async def test_contextmanager_no_reraise(self):
@asynccontextmanager
async def whee():
# Calling __aexit__ should not result in an exception
self.assertFalse(await ctx.__aexit__(TypeError, TypeError("foo"), None))
- @_async_test
async def test_contextmanager_trap_yield_after_throw(self):
@asynccontextmanager
async def whoo():
with self.assertRaises(RuntimeError):
await ctx.__aexit__(TypeError, TypeError('foo'), None)
- @_async_test
async def test_contextmanager_trap_no_yield(self):
@asynccontextmanager
async def whoo():
with self.assertRaises(RuntimeError):
await ctx.__aenter__()
- @_async_test
async def test_contextmanager_trap_second_yield(self):
@asynccontextmanager
async def whoo():
with self.assertRaises(RuntimeError):
await ctx.__aexit__(None, None, None)
- @_async_test
async def test_contextmanager_non_normalised(self):
@asynccontextmanager
async def whoo():
with self.assertRaises(SyntaxError):
await ctx.__aexit__(RuntimeError, None, None)
- @_async_test
async def test_contextmanager_except(self):
state = []
@asynccontextmanager
raise ZeroDivisionError(999)
self.assertEqual(state, [1, 42, 999])
- @_async_test
async def test_contextmanager_except_stopiter(self):
@asynccontextmanager
async def woohoo():
else:
self.fail(f'{stop_exc} was suppressed')
- @_async_test
async def test_contextmanager_wrap_runtimeerror(self):
@asynccontextmanager
async def woohoo():
self.assertEqual(baz.__doc__, "Whee!")
@support.requires_docstrings
- @_async_test
async def test_instance_docstring_given_cm_docstring(self):
baz = self._create_contextmanager_attribs()(None)
self.assertEqual(baz.__doc__, "Whee!")
async with baz:
pass # suppress warning
- @_async_test
async def test_keywords(self):
# Ensure no keyword arguments are inhibited
@asynccontextmanager
async with woohoo(self=11, func=22, args=33, kwds=44) as target:
self.assertEqual(target, (11, 22, 33, 44))
- @_async_test
async def test_recursive(self):
depth = 0
ncols = 0
self.assertEqual(ncols, 10)
self.assertEqual(depth, 0)
- @_async_test
async def test_decorator(self):
entered = False
await test()
self.assertFalse(entered)
- @_async_test
async def test_decorator_with_exception(self):
entered = False
await test()
self.assertFalse(entered)
- @_async_test
async def test_decorating_method(self):
@asynccontextmanager
self.assertEqual(test.b, 2)
-class AclosingTestCase(unittest.TestCase):
+class AclosingTestCase(unittest.IsolatedAsyncioTestCase):
@support.requires_docstrings
def test_instance_docs(self):
obj = aclosing(None)
self.assertEqual(obj.__doc__, cm_docstring)
- @_async_test
async def test_aclosing(self):
state = []
class C:
self.assertEqual(x, y)
self.assertEqual(state, [1])
- @_async_test
async def test_aclosing_error(self):
state = []
class C:
1 / 0
self.assertEqual(state, [1])
- @_async_test
async def test_aclosing_bpo41229(self):
state = []
self.assertEqual(state, [1])
-class TestAsyncExitStack(TestBaseExitStack, unittest.TestCase):
+class TestAsyncExitStack(TestBaseExitStack, unittest.IsolatedAsyncioTestCase):
class SyncAsyncExitStack(AsyncExitStack):
@staticmethod
def run_coroutine(coro):
('__aexit__', 'cb_suppress = cb(*exc_details)'),
]
- def setUp(self):
- self.loop = asyncio.new_event_loop()
- asyncio.set_event_loop(self.loop)
- self.addCleanup(self.loop.close)
- self.addCleanup(asyncio.set_event_loop_policy, None)
-
- @_async_test
async def test_async_callback(self):
expected = [
((), {}),
stack.push_async_callback(callback=_exit, arg=3)
self.assertEqual(result, [])
- @_async_test
async def test_async_push(self):
exc_raised = ZeroDivisionError
async def _expect_exc(exc_type, exc, exc_tb):
self.assertIs(stack._exit_callbacks[-1][1], _expect_exc)
1/0
- @_async_test
async def test_enter_async_context(self):
class TestCM(object):
async def __aenter__(self):
self.assertEqual(result, [1, 2, 3, 4])
- @_async_test
async def test_enter_async_context_errors(self):
class LacksEnterAndExit:
pass
await stack.enter_async_context(LacksExit())
self.assertFalse(stack._exit_callbacks)
- @_async_test
async def test_async_exit_exception_chaining(self):
# Ensure exception chaining matches the reference behaviour
async def raise_exc(exc):
self.assertIsInstance(inner_exc, ValueError)
self.assertIsInstance(inner_exc.__context__, ZeroDivisionError)
- @_async_test
async def test_async_exit_exception_explicit_none_context(self):
# Ensure AsyncExitStack chaining matches actual nested `with` statements
# regarding explicit __context__ = None.
else:
self.fail("Expected IndexError, but no exception was raised")
- @_async_test
async def test_instance_bypass_async(self):
class Example(object): pass
cm = Example()
self.assertIs(stack._exit_callbacks[-1][1], cm)
-class TestAsyncNullcontext(unittest.TestCase):
- @_async_test
+class TestAsyncNullcontext(unittest.IsolatedAsyncioTestCase):
async def test_async_nullcontext(self):
class C:
pass
projects / thirdparty / Python / cpython.git / commitdiff
