class TestDepthMiddleware(TestCase):
def setUp(self):
crawler = get_crawler(Spider)
self.spider = crawler._create_spider('scrapytest.org')
self.stats = StatsCollector(crawler)
self.stats.open_spider(self.spider)
self.mw = DepthMiddleware(1, self.stats, True)
def test_process_spider_output(self):
req = Request('http://scrapytest.org')
resp = Response('http://scrapytest.org')
resp.request = req
result = [Request('http://scrapytest.org')]
out = list(self.mw.process_spider_output(resp, result, self.spider))
self.assertEquals(out, result)
rdc = self.stats.get_value('request_depth_count/1', spider=self.spider)
self.assertEquals(rdc, 1)
req.meta['depth'] = 1
out2 = list(self.mw.process_spider_output(resp, result, self.spider))
self.assertEquals(out2, [])
rdm = self.stats.get_value('request_depth_max', spider=self.spider)
self.assertEquals(rdm, 1)
def tearDown(self):
self.stats.close_spider(self.spider, '')
class TestDepthMiddleware(TestCase):
def setUp(self):
crawler = get_crawler(Spider)
self.spider = crawler._create_spider("scrapytest.org")
self.stats = StatsCollector(crawler)
self.stats.open_spider(self.spider)
self.mw = DepthMiddleware(1, self.stats, True)
def test_process_spider_output(self):
req = Request("http://scrapytest.org")
resp = Response("http://scrapytest.org")
resp.request = req
result = [Request("http://scrapytest.org")]
out = list(self.mw.process_spider_output(resp, result, self.spider))
self.assertEquals(out, result)
rdc = self.stats.get_value("request_depth_count/1", spider=self.spider)
self.assertEquals(rdc, 1)
req.meta["depth"] = 1
out2 = list(self.mw.process_spider_output(resp, result, self.spider))
self.assertEquals(out2, [])
rdm = self.stats.get_value("request_depth_max", spider=self.spider)
self.assertEquals(rdm, 1)
def tearDown(self):
self.stats.close_spider(self.spider, "")
def parse(self, response):
#getting the question blocks from response.
question_blocks = Selector(
text=json.loads(response.body.decode("utf-8"))['msg'][1]).xpath(
'//div[contains(@itemtype, "http://schema.org/Question")]')
for question_block in question_blocks:
item = ZhihuapiItem()
item['question_name'] = question_block.xpath(
'.//div/div/h2/a/text()').extract_first()
item['question_url'] = question_block.xpath(
'.//div/div/h2/a/@href').extract_first()
item['question_answer'] = question_block.xpath(
'.//div/div/div[1]/div[5]/div/a/@href').extract_first()
item['question_answer_author_profile'] = question_block.xpath(
'.//div/div/div[1]/div[3]/span/span[1]/a/@href').extract_first(
)
item['question_answer_author'] = question_block.xpath(
'.//div/div/div[1]/div[3]/span/span[1]/a/text()'
).extract_first()
self.logger.info(
'Question info: question name - {}, question answer - {}, question url - {}, question answer author profile - {}, question answer author - {}'
.format(item['question_name'], item['question_answer'],
item['question_url'],
item['question_answer_author_profile'],
item['question_answer_author']))
yield item
if len(question_blocks) > 0:
last_data_score = question_blocks[len(question_blocks) - 1].xpath(
'@data-score').extract_first()
else:
self.logger.info("No more new questions, waiting to stop...")
StatsCollector.close_spider(self,
spider=zhihuSpider,
reason="No more questions...")
self.logger.info('Last Data Score is - {}'.format(last_data_score))
yield scrapy.http.FormRequest(self.topic_url,
method='POST',
headers=self.headers,
formdata={
'start': '0',
'offset': str(last_data_score)
},
callback=self.parse)
