Add tests for the openid lister for FederationReaderServer

Check all possible variants of openid and federation listener on/off
possibilities.

Signed-off-by: Jason Robinson <jasonr@matrix.org>

tests/app/test_openid_listener.py

+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from mock import patch, Mock
+from parameterized import parameterized
+
+from synapse.app.federation_reader import FederationReaderServer
+
+from tests.unittest import HomeserverTestCase
+
+
+@patch("synapse.app.homeserver.KeyApiV2Resource", new=Mock())
+class FederationReaderOpenIDListenerTests(HomeserverTestCase):
+    def make_homeserver(self, reactor, clock):
+        hs = self.setup_test_homeserver(
+            http_client=None, homeserverToUse=FederationReaderServer,
+        )
+        return hs
+
+    @parameterized.expand([
+        (["federation"], "auth_fail"),
+        ([], "no_resource"),
+        (["openid", "federation"], "auth_fail"),
+        (["openid"], "auth_fail"),
+    ])
+    def test_openid_listener(self, names, expectation):
+        """
+        Test different openid listener configurations.
+
+        401 is success here since it means we hit the handler and auth failed.
+        """
+        config = {
+            "port": 8080,
+            "bind_addresses": ["0.0.0.0"],
+            "resources": [{"names": names}],
+        }
+
+        # Listen with the config
+        self.hs._listen_http(config)
+
+        # Grab the resource from the site that was told to listen
+        site = self.reactor.tcpServers[0][1]
+        try:
+            self.resource = (
+                site.resource.children[b"_matrix"].children[b"federation"].children[b"v1"]
+            )
+        except KeyError:
+            if expectation == "no_resource":
+                return
+            raise
+
+        request, channel = self.make_request("GET", "/_matrix/federation/v1/openid/userinfo")
+        self.render(request)
+
+        self.assertEqual(channel.code, 401)