[Python-checkins] [3.9] bpo-45011: Fix test_asyncio without C module _asyncio (GH-27968) (GH-27970)

[ambv]

https://github.com/python/cpython/commit/970533e65c1a1129dfc1cc1867f6ad075f7f5bf6
commit: 970533e65c1a1129dfc1cc1867f6ad075f7f5bf6
branch: 3.9
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: ambv <lukasz at langa.pl>
date: 2021-08-26T19:56:50+02:00
summary:

[3.9] bpo-45011: Fix test_asyncio without C module _asyncio (GH-27968) (GH-27970)

Co-authored-by: Łukasz Langa <lukasz at langa.pl>
(cherry picked from commit 7dc505b8655b3e48b93a4274dfd26e5856d9c64f)

Co-authored-by: Serhiy Storchaka <storchaka at gmail.com>

files:
A Misc/NEWS.d/next/Tests/2021-08-26-14-20-44.bpo-45011.mQZdXU.rst
M Lib/test/test_asyncio/__init__.py
M Lib/test/test_asyncio/functional.py
M Lib/test/test_asyncio/test_futures.py
M Lib/test/test_asyncio/test_sslproto.py
M Lib/test/test_asyncio/test_tasks.py

diff --git a/Lib/test/test_asyncio/__init__.py b/Lib/test/test_asyncio/__init__.py
index 230c35cfcf12c..4a7a868980d88 100644
--- a/Lib/test/test_asyncio/__init__.py
+++ b/Lib/test/test_asyncio/__init__.py
@@ -28,6 +28,7 @@ def run(self, result, debug=False):
             ignore("asyncio.runners", like=r".*loop argument.*"),
             ignore("asyncio.subprocess", like=r".*loop argument.*"),
             ignore("asyncio.tasks", like=r".*loop argument.*"),
+            ignore("test.test_asyncio.test_events", like=r".*loop argument.*"),
             ignore("test.test_asyncio.test_queues", like=r".*loop argument.*"),
             ignore("test.test_asyncio.test_tasks", like=r".*loop argument.*"),
         }
diff --git a/Lib/test/test_asyncio/functional.py b/Lib/test/test_asyncio/functional.py
index 5cd0659387d84..70bc40892cca5 100644
--- a/Lib/test/test_asyncio/functional.py
+++ b/Lib/test/test_asyncio/functional.py
@@ -29,10 +29,6 @@ def setUp(self):
         self.loop.set_exception_handler(self.loop_exception_handler)
         self.__unhandled_exceptions = []
 
-        # Disable `_get_running_loop`.
-        self._old_get_running_loop = asyncio.events._get_running_loop
-        asyncio.events._get_running_loop = lambda: None
-
     def tearDown(self):
         try:
             self.loop.close()
@@ -43,7 +39,6 @@ def tearDown(self):
                 self.fail('unexpected calls to loop.call_exception_handler()')
 
         finally:
-            asyncio.events._get_running_loop = self._old_get_running_loop
             asyncio.set_event_loop(None)
             self.loop = None
 
diff --git a/Lib/test/test_asyncio/test_futures.py b/Lib/test/test_asyncio/test_futures.py
index ec00896cc620b..c16bfc08a7abe 100644
--- a/Lib/test/test_asyncio/test_futures.py
+++ b/Lib/test/test_asyncio/test_futures.py
@@ -876,6 +876,8 @@ def _get_future_cls(self):
         return futures._PyFuture
 
 
+ at unittest.skipUnless(hasattr(futures, '_CFuture'),
+                     'requires the C _asyncio module')
 class CFutureInheritanceTests(BaseFutureInheritanceTests,
                               test_utils.TestCase):
     def _get_future_cls(self):
diff --git a/Lib/test/test_asyncio/test_sslproto.py b/Lib/test/test_asyncio/test_sslproto.py
index 948820c82f3bf..bc01a8bbf2d35 100644
--- a/Lib/test/test_asyncio/test_sslproto.py
+++ b/Lib/test/test_asyncio/test_sslproto.py
@@ -278,6 +278,7 @@ async def client(addr):
 
         # No garbage is left if SSL is closed uncleanly
         client_context = weakref.ref(client_context)
+        support.gc_collect()
         self.assertIsNone(client_context())
 
     def test_create_connection_memory_leak(self):
@@ -341,6 +342,7 @@ async def client(addr):
         # No garbage is left for SSL client from loop.create_connection, even
         # if user stores the SSLTransport in corresponding protocol instance
         client_context = weakref.ref(client_context)
+        support.gc_collect()
         self.assertIsNone(client_context())
 
     def test_start_tls_client_buf_proto_1(self):
@@ -640,6 +642,7 @@ async def client(addr):
         # The 10s handshake timeout should be cancelled to free related
         # objects without really waiting for 10s
         client_sslctx = weakref.ref(client_sslctx)
+        support.gc_collect()
         self.assertIsNone(client_sslctx())
 
     def test_create_connection_ssl_slow_handshake(self):
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 01f62b7f40872..24d04feb950d3 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -3196,15 +3196,18 @@ class GenericTaskTests(test_utils.TestCase):
     def test_future_subclass(self):
         self.assertTrue(issubclass(asyncio.Task, asyncio.Future))
 
+    @support.cpython_only
     def test_asyncio_module_compiled(self):
         # Because of circular imports it's easy to make _asyncio
         # module non-importable.  This is a simple test that will
         # fail on systems where C modules were successfully compiled
-        # (hence the test for _functools), but _asyncio somehow didn't.
+        # (hence the test for _functools etc), but _asyncio somehow didn't.
         try:
             import _functools
+            import _json
+            import _pickle
         except ImportError:
-            pass
+            self.skipTest('C modules are not available')
         else:
             try:
                 import _asyncio
diff --git a/Misc/NEWS.d/next/Tests/2021-08-26-14-20-44.bpo-45011.mQZdXU.rst b/Misc/NEWS.d/next/Tests/2021-08-26-14-20-44.bpo-45011.mQZdXU.rst
new file mode 100644
index 0000000000000..64e701e2f29f4
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2021-08-26-14-20-44.bpo-45011.mQZdXU.rst
@@ -0,0 +1,3 @@
+Made tests relying on the :mod:`_asyncio` C extension module optional to
+allow running on alternative Python implementations. Patch by Serhiy
+Storchaka.