added urllength spider middleware test

scrapy/tests/test_spidermiddleware_urllength.py

@@ -0,0 +1,31 @@
+from unittest import TestCase
+
+from scrapy.conf import settings
+from scrapy.contrib.spidermiddleware.urllength import UrlLengthMiddleware
+from scrapy.http import Response, Request
+from scrapy.spider import BaseSpider
+
+
+class TestUrlLengthMiddleware(TestCase):
+
+    def setUp(self):
+        settings.disabled = False
+        settings.overrides['URLLENGTH_LIMIT'] = 25
+
+        self.spider = BaseSpider()
+        self.mw = UrlLengthMiddleware()
+
+    def test_process_spider_output(self):
+        res = Response('http://scrapytest.org')
+
+        short_url_req = Request('http://scrapytest.org/')
+        long_url_req = Request('http://scrapytest.org/this_is_a_long_url')
+        reqs = [short_url_req, long_url_req] 
+
+        out = list(self.mw.process_spider_output(res, reqs, self.spider))
+        self.assertEquals(out, [short_url_req])
+
+    def tearDown(self):
+        del settings.overrides['URLLENGTH_LIMIT']
+        settings.disabled = True
+