mirror of https://github.com/scrapy/scrapy.git
75 lines
2.7 KiB
Python
75 lines
2.7 KiB
Python
from testfixtures import LogCapture
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from twisted.internet import defer
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from scrapy.exceptions import StopDownload
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from tests.test_engine import (
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AttrsItemsSpider,
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CrawlerRun,
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DataClassItemsSpider,
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DictItemsSpider,
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MySpider,
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TestEngineBase,
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)
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class HeadersReceivedCrawlerRun(CrawlerRun):
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def headers_received(self, headers, body_length, request, spider):
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super().headers_received(headers, body_length, request, spider)
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raise StopDownload(fail=False)
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class TestHeadersReceivedEngine(TestEngineBase):
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@defer.inlineCallbacks
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def test_crawler(self):
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for spider in (
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MySpider,
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DictItemsSpider,
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AttrsItemsSpider,
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DataClassItemsSpider,
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):
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run = HeadersReceivedCrawlerRun(spider)
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with LogCapture() as log:
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yield run.run()
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log.check_present(
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(
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"scrapy.core.downloader.handlers.http11",
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"DEBUG",
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f"Download stopped for <GET http://localhost:{run.portno}/redirected> from"
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" signal handler HeadersReceivedCrawlerRun.headers_received",
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)
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)
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log.check_present(
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(
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"scrapy.core.downloader.handlers.http11",
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"DEBUG",
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f"Download stopped for <GET http://localhost:{run.portno}/> from signal"
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" handler HeadersReceivedCrawlerRun.headers_received",
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)
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)
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log.check_present(
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(
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"scrapy.core.downloader.handlers.http11",
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"DEBUG",
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f"Download stopped for <GET http://localhost:{run.portno}/numbers> from"
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" signal handler HeadersReceivedCrawlerRun.headers_received",
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)
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)
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self._assert_visited_urls(run)
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self._assert_downloaded_responses(run, count=6)
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self._assert_signals_caught(run)
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self._assert_bytes_received(run)
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self._assert_headers_received(run)
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@staticmethod
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def _assert_bytes_received(run: CrawlerRun) -> None:
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assert len(run.bytes) == 0
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@staticmethod
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def _assert_visited_urls(run: CrawlerRun) -> None:
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must_be_visited = ["/", "/redirect", "/redirected"]
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urls_visited = {rp[0].url for rp in run.respplug}
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urls_expected = {run.geturl(p) for p in must_be_visited}
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assert urls_expected <= urls_visited, (
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f"URLs not visited: {list(urls_expected - urls_visited)}"
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)
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