Method test4

Lib/test/test_asyncgen.py:899–918

(anext)

                    self.assertEqual(g.send(None), 1)

        def test4(anext):
            @types.coroutine
            def _async_yield(v):
                yield v * 10
                return (yield (v * 10 + 1))

            async def agenfn():
                try:
                    await _async_yield(1)
                except MyError:
                    await _async_yield(2)
                return
                yield

            agen = agenfn()
            with contextlib.closing(anext(agen, "default").__await__()) as g:
                self.assertEqual(g.send(None), 10)
                self.assertEqual(g.throw(MyError()), 20)
                with self.assertRaisesRegex(MyError, 'val'):
                    g.throw(MyError('val'))

        def test5(anext):
            @types.coroutine