Method test_exception_downloader

tests/test_engine.py:686–694

(
        self, crawler: Crawler, caplog: pytest.LogCaptureFixture
    )

    @coroutine_test
    async def test_exception_downloader(
        self, crawler: Crawler, caplog: pytest.LogCaptureFixture
    ) -> None:
        engine = ExecutionEngine(crawler, lambda _: None)
        crawler.engine = engine
        await engine.open_spider_async()
        del engine.downloader.slots
        await engine.close_spider_async()
        assert "Downloader close failure" in caplog.text

    @coroutine_test
    async def test_exception_scraper(