bpo-36933: Remove sys.set_coroutine_wrapper (marked for removal in 3.8) (GH-13577)

It has been documented as deprecated and to be removed in 3.8; 

From a comment on another thread – which I can't find ; leave get_coro_wrapper() for now, but always return `None`.


https://bugs.python.org/issue36933

Lib/test/test_coroutines.py

@@ -2146,99 +2146,6 @@ class CoroAsyncIOCompatTest(unittest.TestCase):
         self.assertEqual(buffer, [1, 2, 'MyException'])
 
 
-class SysSetCoroWrapperTest(unittest.TestCase):
-
-    def test_set_wrapper_1(self):
-        async def foo():
-            return 'spam'
-
-        wrapped = None
-        def wrap(gen):
-            nonlocal wrapped
-            wrapped = gen
-            return gen
-
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(sys.get_coroutine_wrapper())
-
-        with self.assertWarns(DeprecationWarning):
-            sys.set_coroutine_wrapper(wrap)
-        with self.assertWarns(DeprecationWarning):
-            self.assertIs(sys.get_coroutine_wrapper(), wrap)
-        try:
-            f = foo()
-            self.assertTrue(wrapped)
-
-            self.assertEqual(run_async(f), ([], 'spam'))
-        finally:
-            with self.assertWarns(DeprecationWarning):
-                sys.set_coroutine_wrapper(None)
-            f.close()
-
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(sys.get_coroutine_wrapper())
-
-        wrapped = None
-        coro = foo()
-        self.assertFalse(wrapped)
-        coro.close()
-
-    def test_set_wrapper_2(self):
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(sys.get_coroutine_wrapper())
-        with self.assertRaisesRegex(TypeError, "callable expected, got int"):
-            with self.assertWarns(DeprecationWarning):
-                sys.set_coroutine_wrapper(1)
-        with self.assertWarns(DeprecationWarning):
-            self.assertIsNone(sys.get_coroutine_wrapper())
-
-    def test_set_wrapper_3(self):
-        async def foo():
-            return 'spam'
-
-        def wrapper(coro):
-            async def wrap(coro):
-                return await coro
-            return wrap(coro)
-
-        with self.assertWarns(DeprecationWarning):
-            sys.set_coroutine_wrapper(wrapper)
-        try:
-            with silence_coro_gc(), self.assertRaisesRegex(
-                    RuntimeError,
-                    r"coroutine wrapper.*\.wrapper at 0x.*attempted to "
-                    r"recursively wrap .* wrap .*"):
-
-                foo()
-
-        finally:
-            with self.assertWarns(DeprecationWarning):
-                sys.set_coroutine_wrapper(None)
-
-    def test_set_wrapper_4(self):
-        @types.coroutine
-        def foo():
-            return 'spam'
-
-        wrapped = None
-        def wrap(gen):
-            nonlocal wrapped
-            wrapped = gen
-            return gen
-
-        with self.assertWarns(DeprecationWarning):
-            sys.set_coroutine_wrapper(wrap)
-        try:
-            foo()
-            self.assertIs(
-                wrapped, None,
-                "generator-based coroutine was wrapped via "
-                "sys.set_coroutine_wrapper")
-        finally:
-            with self.assertWarns(DeprecationWarning):
-                sys.set_coroutine_wrapper(None)
-
-
 class OriginTrackingTest(unittest.TestCase):
     def here(self):
         info = inspect.getframeinfo(inspect.currentframe().f_back)