mirror of https://github.com/scrapy/scrapy.git
63 lines
2.2 KiB
Python
63 lines
2.2 KiB
Python
from __future__ import annotations
|
|
|
|
from typing import TYPE_CHECKING, Any
|
|
|
|
from scrapy.signals import request_left_downloader
|
|
from scrapy.spiders import Spider
|
|
from scrapy.utils.test import get_crawler
|
|
from tests.utils.decorators import inline_callbacks_test
|
|
|
|
if TYPE_CHECKING:
|
|
from scrapy import Request
|
|
from scrapy.crawler import Crawler
|
|
from tests.mockserver.http import MockServer
|
|
|
|
|
|
class SignalCatcherSpider(Spider):
|
|
name = "signal_catcher"
|
|
|
|
def __init__(self, crawler: Crawler, url: str, *args: Any, **kwargs: Any):
|
|
super().__init__(*args, **kwargs)
|
|
crawler.signals.connect(self.on_request_left, signal=request_left_downloader)
|
|
self.caught_times = 0
|
|
self.start_urls = [url]
|
|
|
|
@classmethod
|
|
def from_crawler(
|
|
cls, crawler: Crawler, *args: Any, **kwargs: Any
|
|
) -> SignalCatcherSpider:
|
|
return cls(crawler, *args, **kwargs)
|
|
|
|
def on_request_left(self, request: Request, spider: Spider) -> None:
|
|
self.caught_times += 1
|
|
|
|
|
|
class TestCatching:
|
|
@inline_callbacks_test
|
|
def test_success(self, mockserver: MockServer):
|
|
crawler = get_crawler(SignalCatcherSpider)
|
|
yield crawler.crawl(mockserver.url("/status?n=200"))
|
|
assert isinstance(crawler.spider, SignalCatcherSpider)
|
|
assert crawler.spider.caught_times == 1
|
|
|
|
@inline_callbacks_test
|
|
def test_timeout(self, mockserver: MockServer):
|
|
crawler = get_crawler(SignalCatcherSpider, {"DOWNLOAD_TIMEOUT": 0.1})
|
|
yield crawler.crawl(mockserver.url("/delay?n=0.2"))
|
|
assert isinstance(crawler.spider, SignalCatcherSpider)
|
|
assert crawler.spider.caught_times == 1
|
|
|
|
@inline_callbacks_test
|
|
def test_disconnect(self, mockserver: MockServer):
|
|
crawler = get_crawler(SignalCatcherSpider)
|
|
yield crawler.crawl(mockserver.url("/drop"))
|
|
assert isinstance(crawler.spider, SignalCatcherSpider)
|
|
assert crawler.spider.caught_times == 1
|
|
|
|
@inline_callbacks_test
|
|
def test_noconnect(self):
|
|
crawler = get_crawler(SignalCatcherSpider)
|
|
yield crawler.crawl("http://thereisdefinetelynosuchdomain.com")
|
|
assert isinstance(crawler.spider, SignalCatcherSpider)
|
|
assert crawler.spider.caught_times == 1
|