'Builds two same source objects in a row examines speeds of both'

@unittest.skip('Need    to    mock    download')
@print_test
def test_cache_categories(self):

    url = 'http://uk.yahoo.com'
    html = mock_resource_with('yahoo_main_site', 'html')
    s = Source(url)
    s.download()
    s.parse()
    s.set_categories()
    saved_urls = s.category_urls()
    s.categories = []
    s.set_categories()
    self.assertCountEqual(saved_urls, s.category_urls())
