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a49c82ad62
* use CrawlerRunner.create_crawler instead of get_crawler helper in test_crawl; * add a test for loading spiders by name; * add a test for passing Crawler objects instead of Spider objects; * add a test for CrawlerRunner.join
92 lines
3.5 KiB
Python
92 lines
3.5 KiB
Python
import sys
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import os
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import shutil
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from zope.interface.verify import verifyObject
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from twisted.trial import unittest
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# ugly hack to avoid cyclic imports of scrapy.spiders when running this test
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# alone
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import scrapy
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from scrapy.interfaces import ISpiderLoader
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from scrapy.spiderloader import SpiderLoader
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from scrapy.settings import Settings
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from scrapy.http import Request
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from scrapy.crawler import CrawlerRunner
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module_dir = os.path.dirname(os.path.abspath(__file__))
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class SpiderLoaderTest(unittest.TestCase):
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def setUp(self):
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orig_spiders_dir = os.path.join(module_dir, 'test_spiders')
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self.tmpdir = self.mktemp()
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os.mkdir(self.tmpdir)
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self.spiders_dir = os.path.join(self.tmpdir, 'test_spiders_xxx')
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shutil.copytree(orig_spiders_dir, self.spiders_dir)
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sys.path.append(self.tmpdir)
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settings = Settings({'SPIDER_MODULES': ['test_spiders_xxx']})
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self.spider_loader = SpiderLoader.from_settings(settings)
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def tearDown(self):
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del self.spider_loader
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del sys.modules['test_spiders_xxx']
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sys.path.remove(self.tmpdir)
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def test_interface(self):
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verifyObject(ISpiderLoader, self.spider_loader)
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def test_list(self):
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self.assertEqual(set(self.spider_loader.list()),
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set(['spider1', 'spider2', 'spider3']))
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def test_load(self):
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spider1 = self.spider_loader.load("spider1")
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self.assertEqual(spider1.__name__, 'Spider1')
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def test_find_by_request(self):
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self.assertEqual(self.spider_loader.find_by_request(Request('http://scrapy1.org/test')),
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['spider1'])
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self.assertEqual(self.spider_loader.find_by_request(Request('http://scrapy2.org/test')),
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['spider2'])
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self.assertEqual(set(self.spider_loader.find_by_request(Request('http://scrapy3.org/test'))),
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set(['spider1', 'spider2']))
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self.assertEqual(self.spider_loader.find_by_request(Request('http://scrapy999.org/test')),
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[])
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self.assertEqual(self.spider_loader.find_by_request(Request('http://spider3.com')),
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[])
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self.assertEqual(self.spider_loader.find_by_request(Request('http://spider3.com/onlythis')),
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['spider3'])
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def test_load_spider_module(self):
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module = 'tests.test_spiderloader.test_spiders.spider1'
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settings = Settings({'SPIDER_MODULES': [module]})
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self.spider_loader = SpiderLoader.from_settings(settings)
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assert len(self.spider_loader._spiders) == 1
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def test_load_spider_module(self):
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prefix = 'tests.test_spiderloader.test_spiders.'
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module = ','.join(prefix + s for s in ('spider1', 'spider2'))
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settings = Settings({'SPIDER_MODULES': module})
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self.spider_loader = SpiderLoader.from_settings(settings)
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assert len(self.spider_loader._spiders) == 2
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def test_load_base_spider(self):
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module = 'tests.test_spiderloader.test_spiders.spider0'
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settings = Settings({'SPIDER_MODULES': [module]})
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self.spider_loader = SpiderLoader.from_settings(settings)
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assert len(self.spider_loader._spiders) == 0
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def test_crawler_runner_loading(self):
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module = 'tests.test_spiderloader.test_spiders.spider1'
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runner = CrawlerRunner({'SPIDER_MODULES': [module]})
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self.assertRaisesRegexp(KeyError, 'Spider not found',
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runner.create_crawler, 'spider2')
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crawler = runner.create_crawler('spider1')
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self.assertTrue(issubclass(crawler.spidercls, scrapy.Spider))
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self.assertEqual(crawler.spidercls.name, 'spider1')
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