Method test_explicit_asyncio_loop

tornado/test/ioloop_test.py:435–442

(self)

        yield gen.multi([self.io_loop.run_in_executor(None, f) for i in range(2)])

    def test_explicit_asyncio_loop(self):
        asyncio_loop = asyncio.new_event_loop()
        loop = IOLoop(asyncio_loop=asyncio_loop, make_current=False)
        assert loop.asyncio_loop is asyncio_loop  # type: ignore
        with self.assertRaises(RuntimeError):
            # Can't register two IOLoops with the same asyncio_loop
            IOLoop(asyncio_loop=asyncio_loop, make_current=False)
        loop.close()


# Deliberately not a subclass of AsyncTestCase so the IOLoop isn't