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90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
import warnings
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import unittest
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from zope.interface.verify import DoesNotImplement
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from scrapy.crawler import Crawler, CrawlerRunner
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from scrapy.settings import Settings, default_settings
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from scrapy.utils.spider import DefaultSpider
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from scrapy.utils.misc import load_object
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class CrawlerTestCase(unittest.TestCase):
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def setUp(self):
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self.crawler = Crawler(DefaultSpider, Settings())
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def test_deprecated_attribute_spiders(self):
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with warnings.catch_warnings(record=True) as w:
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spiders = self.crawler.spiders
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self.assertEqual(len(w), 1)
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self.assertIn("Crawler.spiders", str(w[0].message))
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sl_cls = load_object(self.crawler.settings['SPIDER_LOADER_CLASS'])
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self.assertIsInstance(spiders, sl_cls)
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self.crawler.spiders
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self.assertEqual(len(w), 1, "Warn deprecated access only once")
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def test_populate_spidercls_settings(self):
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spider_settings = {'TEST1': 'spider', 'TEST2': 'spider'}
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project_settings = {'TEST1': 'project', 'TEST3': 'project'}
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class CustomSettingsSpider(DefaultSpider):
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custom_settings = spider_settings
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settings = Settings()
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settings.setdict(project_settings, priority='project')
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crawler = Crawler(CustomSettingsSpider, settings)
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self.assertEqual(crawler.settings.get('TEST1'), 'spider')
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self.assertEqual(crawler.settings.get('TEST2'), 'spider')
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self.assertEqual(crawler.settings.get('TEST3'), 'project')
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self.assertFalse(settings.frozen)
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self.assertTrue(crawler.settings.frozen)
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def test_crawler_accepts_dict(self):
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crawler = Crawler(DefaultSpider, {'foo': 'bar'})
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self.assertEqual(crawler.settings['foo'], 'bar')
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self.assertEqual(
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crawler.settings['RETRY_ENABLED'],
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default_settings.RETRY_ENABLED
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)
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self.assertIsInstance(crawler.settings, Settings)
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class SpiderLoaderWithWrongInterface(object):
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def unneeded_method(self):
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pass
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class CrawlerRunnerTestCase(unittest.TestCase):
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def test_spider_manager_verify_interface(self):
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settings = Settings({
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'SPIDER_LOADER_CLASS': 'tests.test_crawler.SpiderLoaderWithWrongInterface'
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})
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with self.assertRaises(DoesNotImplement):
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CrawlerRunner(settings)
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def test_crawler_runner_accepts_dict(self):
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runner = CrawlerRunner({'foo': 'bar'})
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self.assertEqual(runner.settings['foo'], 'bar')
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self.assertEqual(
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runner.settings['RETRY_ENABLED'],
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default_settings.RETRY_ENABLED
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)
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self.assertIsInstance(runner.settings, Settings)
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def test_deprecated_attribute_spiders(self):
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with warnings.catch_warnings(record=True) as w:
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runner = CrawlerRunner(Settings())
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spiders = runner.spiders
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self.assertEqual(len(w), 1)
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self.assertIn("CrawlerRunner.spiders", str(w[0].message))
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self.assertIn("CrawlerRunner.spider_loader", str(w[0].message))
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sl_cls = load_object(runner.settings['SPIDER_LOADER_CLASS'])
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self.assertIsInstance(spiders, sl_cls)
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