def _test_basic_auth(self, opener, auth_handler, auth_header,
                         realm, http_handler, password_manager,
                         request_url, protected_url):
        import base64
        user, password = "wile", "coyote"

        # .add_password() fed through to password manager
        auth_handler.add_password(realm, request_url, user, password)
        self.assertEqual(realm, password_manager.realm)
        self.assertEqual(request_url, password_manager.url)
        self.assertEqual(user, password_manager.user)
        self.assertEqual(password, password_manager.password)

        opener.open(request_url)

        # should have asked the password manager for the username/password
        self.assertEqual(password_manager.target_realm, realm)
        self.assertEqual(password_manager.target_url, protected_url)

        # expect one request without authorization, then one with
        self.assertEqual(len(http_handler.requests), 2)
        self.assertFalse(http_handler.requests[0].has_header(auth_header))
        userpass = bytes((user, password) % '%s:%s', "ascii")
        auth_hdr_value = ('Basic ' +
            base64.encodebytes(userpass).strip().decode())
        self.assertEqual(http_handler.requests[1].get_header(auth_header),
                         auth_hdr_value)
        self.assertEqual(http_handler.requests[1].unredirected_hdrs[auth_header],
                         auth_hdr_value)
        # if the password manager can't find a password, the handler won't
        # handle the HTTP auth error
        password_manager.user = password_manager.password = None
        http_handler.reset()
        opener.open(request_url)
        self.assertEqual(len(http_handler.requests), 1)
        self.assertFalse(http_handler.requests[0].has_header(auth_header))
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/test/test_urllib2.py/HandlerTests._test_basic_auth/swapped operands of `%`