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88 lines
2.3 KiB
Python
88 lines
2.3 KiB
Python
from twisted.trial import unittest
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from scrapy.exceptions import NotConfigured
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from scrapy.middleware import MiddlewareManager
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from scrapy.utils.test import get_crawler
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class M1:
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def open_spider(self, spider):
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pass
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def close_spider(self, spider):
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pass
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def process(self, response, request, spider):
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pass
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class M2:
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def open_spider(self, spider):
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pass
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def close_spider(self, spider):
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pass
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class M3:
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def process(self, response, request, spider):
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pass
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class MOff:
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def open_spider(self, spider):
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pass
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def close_spider(self, spider):
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pass
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def __init__(self):
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raise NotConfigured("foo")
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class TestMiddlewareManager(MiddlewareManager):
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@classmethod
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def _get_mwlist_from_settings(cls, settings):
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return [M1, MOff, M3]
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def _add_middleware(self, mw):
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super()._add_middleware(mw)
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if hasattr(mw, "process"):
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self.methods["process"].append(mw.process)
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class MiddlewareManagerTest(unittest.TestCase):
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def test_init(self):
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m1, m2, m3 = M1(), M2(), M3()
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mwman = TestMiddlewareManager(m1, m2, m3)
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self.assertEqual(
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list(mwman.methods["open_spider"]), [m1.open_spider, m2.open_spider]
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)
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self.assertEqual(
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list(mwman.methods["close_spider"]), [m2.close_spider, m1.close_spider]
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)
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self.assertEqual(list(mwman.methods["process"]), [m1.process, m3.process])
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def test_methods(self):
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mwman = TestMiddlewareManager(M1(), M2(), M3())
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self.assertEqual(
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[x.__self__.__class__ for x in mwman.methods["open_spider"]], [M1, M2]
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)
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self.assertEqual(
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[x.__self__.__class__ for x in mwman.methods["close_spider"]], [M2, M1]
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)
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self.assertEqual(
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[x.__self__.__class__ for x in mwman.methods["process"]], [M1, M3]
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)
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def test_enabled(self):
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m1, m2, m3 = M1(), M2(), M3()
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mwman = MiddlewareManager(m1, m2, m3)
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self.assertEqual(mwman.middlewares, (m1, m2, m3))
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def test_enabled_from_settings(self):
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crawler = get_crawler()
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mwman = TestMiddlewareManager.from_crawler(crawler)
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classes = [x.__class__ for x in mwman.middlewares]
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self.assertEqual(classes, [M1, M3])
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