Method test_multi_exceptions

python/python3/tornado/test/gen_test.py:185–210

(self)

    @gen_test
    def test_multi_exceptions(self):
        with ExpectLog(app_log, "Multiple exceptions in yield list"):
            with self.assertRaises(RuntimeError) as cm:
                yield gen.Multi(
                    [
                        self.async_exception(RuntimeError("error 1")),
                        self.async_exception(RuntimeError("error 2")),
                    ]
                )
        self.assertEqual(str(cm.exception), "error 1")

        # With only one exception, no error is logged.
        with self.assertRaises(RuntimeError):
            yield gen.Multi(
                [self.async_exception(RuntimeError("error 1")), self.async_future(2)]
            )

        # Exception logging may be explicitly quieted.
        with self.assertRaises(RuntimeError):
            yield gen.Multi(
                [
                    self.async_exception(RuntimeError("error 1")),
                    self.async_exception(RuntimeError("error 2")),
                ],
                quiet_exceptions=RuntimeError,
            )

    @gen_test
    def test_multi_future_exceptions(self):