Issue #28721: Fix asynchronous generators aclose() and athrow()

1 files changed, 140 insertions, 0 deletions

diff --git a/Lib/test/test_asyncgen.py b/Lib/test/test_asyncgen.py
index 68d2029..34ab8a0 100644
--- a/Lib/test/test_asyncgen.py
+++ b/Lib/test/test_asyncgen.py
@@ -450,6 +450,41 @@ class AsyncGenAsyncioTest(unittest.TestCase):
 
         self.loop.run_until_complete(run())
 
+    def test_async_gen_asyncio_anext_06(self):
+        DONE = 0
+
+        # test synchronous generators
+        def foo():
+            try:
+                yield
+            except:
+                pass
+        g = foo()
+        g.send(None)
+        with self.assertRaises(StopIteration):
+            g.send(None)
+
+        # now with asynchronous generators
+
+        async def gen():
+            nonlocal DONE
+            try:
+                yield
+            except:
+                pass
+            DONE = 1
+
+        async def run():
+            nonlocal DONE
+            g = gen()
+            await g.asend(None)
+            with self.assertRaises(StopAsyncIteration):
+                await g.asend(None)
+            DONE += 10
+
+        self.loop.run_until_complete(run())
+        self.assertEqual(DONE, 11)
+
     def test_async_gen_asyncio_anext_tuple(self):
         async def foo():
             try:
@@ -594,6 +629,76 @@ class AsyncGenAsyncioTest(unittest.TestCase):
         self.loop.run_until_complete(run())
         self.assertEqual(DONE, 1)
 
+    def test_async_gen_asyncio_aclose_10(self):
+        DONE = 0
+
+        # test synchronous generators
+        def foo():
+            try:
+                yield
+            except:
+                pass
+        g = foo()
+        g.send(None)
+        g.close()
+
+        # now with asynchronous generators
+
+        async def gen():
+            nonlocal DONE
+            try:
+                yield
+            except:
+                pass
+            DONE = 1
+
+        async def run():
+            nonlocal DONE
+            g = gen()
+            await g.asend(None)
+            await g.aclose()
+            DONE += 10
+
+        self.loop.run_until_complete(run())
+        self.assertEqual(DONE, 11)
+
+    def test_async_gen_asyncio_aclose_11(self):
+        DONE = 0
+
+        # test synchronous generators
+        def foo():
+            try:
+                yield
+            except:
+                pass
+            yield
+        g = foo()
+        g.send(None)
+        with self.assertRaisesRegex(RuntimeError, 'ignored GeneratorExit'):
+            g.close()
+
+        # now with asynchronous generators
+
+        async def gen():
+            nonlocal DONE
+            try:
+                yield
+            except:
+                pass
+            yield
+            DONE += 1
+
+        async def run():
+            nonlocal DONE
+            g = gen()
+            await g.asend(None)
+            with self.assertRaisesRegex(RuntimeError, 'ignored GeneratorExit'):
+                await g.aclose()
+            DONE += 10
+
+        self.loop.run_until_complete(run())
+        self.assertEqual(DONE, 10)
+
     def test_async_gen_asyncio_asend_01(self):
         DONE = 0
 
@@ -801,6 +906,41 @@ class AsyncGenAsyncioTest(unittest.TestCase):
             self.loop.run_until_complete(run())
         self.assertEqual(DONE, 1)
 
+    def test_async_gen_asyncio_athrow_03(self):
+        DONE = 0
+
+        # test synchronous generators
+        def foo():
+            try:
+                yield
+            except:
+                pass
+        g = foo()
+        g.send(None)
+        with self.assertRaises(StopIteration):
+            g.throw(ValueError)
+
+        # now with asynchronous generators
+
+        async def gen():
+            nonlocal DONE
+            try:
+                yield
+            except:
+                pass
+            DONE = 1
+
+        async def run():
+            nonlocal DONE
+            g = gen()
+            await g.asend(None)
+            with self.assertRaises(StopAsyncIteration):
+                await g.athrow(ValueError)
+            DONE += 10
+
+        self.loop.run_until_complete(run())
+        self.assertEqual(DONE, 11)
+
     def test_async_gen_asyncio_athrow_tuple(self):
         async def gen():
             try: