Method opener_has_handler

Lib/test/test_urllib2.py:1869–1871

(self, opener, handler_class)

class MiscTests(unittest.TestCase):

    def opener_has_handler(self, opener, handler_class):
        self.assertTrue(any(h.__class__ == handler_class
                            for h in opener.handlers))

    def test_build_opener(self):
        class MyHTTPHandler(urllib.request.HTTPHandler):