import unittest
import urlparse

from scrapy.http import Request
from scrapy.utils.httpobj import urlparse_cached

class HttpobjUtilsTest(unittest.TestCase):

    def test_urlparse_cached(self):
        url = "http://www.example.com/index.html"
        request1 = Request(url)
        request2 = Request(url)
        req1a = urlparse_cached(request1)
        req1b = urlparse_cached(request1)
        req2 = urlparse_cached(request2)
        urlp = urlparse.urlparse(url)

        assert req1a == req2
        assert req1a == urlp
        assert req1a is req1b
        assert req1a is not req2
        assert req1a is not req2


if __name__ == "__main__":
    unittest.main()