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-rw-r--r--tests/server_notices/test_resource_limits_server_notices.py271
1 files changed, 214 insertions, 57 deletions
diff --git a/tests/server_notices/test_resource_limits_server_notices.py b/tests/server_notices/test_resource_limits_server_notices.py
index cdf89e3383..99908edba3 100644
--- a/tests/server_notices/test_resource_limits_server_notices.py
+++ b/tests/server_notices/test_resource_limits_server_notices.py
@@ -17,27 +17,43 @@ from mock import Mock
 
 from twisted.internet import defer
 
-from synapse.api.constants import EventTypes, ServerNoticeMsgType
+from synapse.api.constants import EventTypes, LimitBlockingTypes, ServerNoticeMsgType
 from synapse.api.errors import ResourceLimitError
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, room
+from synapse.rest.client.v2_alpha import sync
 from synapse.server_notices.resource_limits_server_notices import (
     ResourceLimitsServerNotices,
 )
 
 from tests import unittest
+from tests.unittest import override_config
+from tests.utils import default_config
 
 
 class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
-    def make_homeserver(self, reactor, clock):
-        hs_config = self.default_config("test")
-        hs_config["server_notices"] = {
-            "system_mxid_localpart": "server",
-            "system_mxid_display_name": "test display name",
-            "system_mxid_avatar_url": None,
-            "room_name": "Server Notices",
-        }
+    def default_config(self):
+        config = default_config("test")
+
+        config.update(
+            {
+                "admin_contact": "mailto:user@test.com",
+                "limit_usage_by_mau": True,
+                "server_notices": {
+                    "system_mxid_localpart": "server",
+                    "system_mxid_display_name": "test display name",
+                    "system_mxid_avatar_url": None,
+                    "room_name": "Server Notices",
+                },
+            }
+        )
+
+        # apply any additional config which was specified via the override_config
+        # decorator.
+        if self._extra_config is not None:
+            config.update(self._extra_config)
 
-        hs = self.setup_test_homeserver(config=hs_config)
-        return hs
+        return config
 
     def prepare(self, reactor, clock, hs):
         self.server_notices_sender = self.hs.get_server_notices_sender()
@@ -52,54 +68,41 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
         self._rlsn._store.user_last_seen_monthly_active = Mock(
             return_value=defer.succeed(1000)
         )
-        self._send_notice = self._rlsn._server_notices_manager.send_notice
-        self._rlsn._server_notices_manager.send_notice = Mock()
-        self._rlsn._state.get_current_state = Mock(return_value=defer.succeed(None))
-        self._rlsn._store.get_events = Mock(return_value=defer.succeed({}))
-
+        self._rlsn._server_notices_manager.send_notice = Mock(
+            return_value=defer.succeed(Mock())
+        )
         self._send_notice = self._rlsn._server_notices_manager.send_notice
 
-        self.hs.config.limit_usage_by_mau = True
         self.user_id = "@user_id:test"
 
-        # self.server_notices_mxid = "@server:test"
-        # self.server_notices_mxid_display_name = None
-        # self.server_notices_mxid_avatar_url = None
-        # self.server_notices_room_name = "Server Notices"
-
-        self._rlsn._server_notices_manager.get_notice_room_for_user = Mock(
-            returnValue=""
+        self._rlsn._server_notices_manager.get_or_create_notice_room_for_user = Mock(
+            return_value=defer.succeed("!something:localhost")
         )
-        self._rlsn._store.add_tag_to_room = Mock()
-        self._rlsn._store.get_tags_for_room = Mock(return_value={})
-        self.hs.config.admin_contact = "mailto:user@test.com"
-
-    def test_maybe_send_server_notice_to_user_flag_off(self):
-        """Tests cases where the flags indicate nothing to do"""
-        # test hs disabled case
-        self.hs.config.hs_disabled = True
+        self._rlsn._store.add_tag_to_room = Mock(return_value=defer.succeed(None))
+        self._rlsn._store.get_tags_for_room = Mock(return_value=defer.succeed({}))
 
+    @override_config({"hs_disabled": True})
+    def test_maybe_send_server_notice_disabled_hs(self):
+        """If the HS is disabled, we should not send notices"""
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
-
         self._send_notice.assert_not_called()
-        # Test when mau limiting disabled
-        self.hs.config.hs_disabled = False
-        self.hs.config.limit_usage_by_mau = False
-        self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
 
+    @override_config({"limit_usage_by_mau": False})
+    def test_maybe_send_server_notice_to_user_flag_off(self):
+        """If mau limiting is disabled, we should not send notices"""
+        self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
         self._send_notice.assert_not_called()
 
     def test_maybe_send_server_notice_to_user_remove_blocked_notice(self):
         """Test when user has blocked notice, but should have it removed"""
 
-        self._rlsn._auth.check_auth_blocking = Mock()
+        self._rlsn._auth.check_auth_blocking = Mock(return_value=defer.succeed(None))
         mock_event = Mock(
             type=EventTypes.Message, content={"msgtype": ServerNoticeMsgType}
         )
         self._rlsn._store.get_events = Mock(
             return_value=defer.succeed({"123": mock_event})
         )
-
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
         # Would be better to check the content, but once == remove blocking event
         self._send_notice.assert_called_once()
@@ -109,7 +112,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
         Test when user has blocked notice, but notice ought to be there (NOOP)
         """
         self._rlsn._auth.check_auth_blocking = Mock(
-            side_effect=ResourceLimitError(403, "foo")
+            return_value=defer.succeed(None), side_effect=ResourceLimitError(403, "foo")
         )
 
         mock_event = Mock(
@@ -118,6 +121,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
         self._rlsn._store.get_events = Mock(
             return_value=defer.succeed({"123": mock_event})
         )
+
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
 
         self._send_notice.assert_not_called()
@@ -126,20 +130,19 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
         """
         Test when user does not have blocked notice, but should have one
         """
-
         self._rlsn._auth.check_auth_blocking = Mock(
-            side_effect=ResourceLimitError(403, "foo")
+            return_value=defer.succeed(None), side_effect=ResourceLimitError(403, "foo")
         )
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
 
         # Would be better to check contents, but 2 calls == set blocking event
-        self.assertTrue(self._send_notice.call_count == 2)
+        self.assertEqual(self._send_notice.call_count, 2)
 
     def test_maybe_send_server_notice_to_user_add_blocked_notice_noop(self):
         """
         Test when user does not have blocked notice, nor should they (NOOP)
         """
-        self._rlsn._auth.check_auth_blocking = Mock()
+        self._rlsn._auth.check_auth_blocking = Mock(return_value=defer.succeed(None))
 
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
 
@@ -150,7 +153,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
         Test when user is not part of the MAU cohort - this should not ever
         happen - but ...
         """
-        self._rlsn._auth.check_auth_blocking = Mock()
+        self._rlsn._auth.check_auth_blocking = Mock(return_value=defer.succeed(None))
         self._rlsn._store.user_last_seen_monthly_active = Mock(
             return_value=defer.succeed(None)
         )
@@ -158,8 +161,87 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
 
         self._send_notice.assert_not_called()
 
+    @override_config({"mau_limit_alerting": False})
+    def test_maybe_send_server_notice_when_alerting_suppressed_room_unblocked(self):
+        """
+        Test that when server is over MAU limit and alerting is suppressed, then
+        an alert message is not sent into the room
+        """
+        self._rlsn._auth.check_auth_blocking = Mock(
+            return_value=defer.succeed(None),
+            side_effect=ResourceLimitError(
+                403, "foo", limit_type=LimitBlockingTypes.MONTHLY_ACTIVE_USER
+            ),
+        )
+        self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
+
+        self.assertEqual(self._send_notice.call_count, 0)
+
+    @override_config({"mau_limit_alerting": False})
+    def test_check_hs_disabled_unaffected_by_mau_alert_suppression(self):
+        """
+        Test that when a server is disabled, that MAU limit alerting is ignored.
+        """
+        self._rlsn._auth.check_auth_blocking = Mock(
+            return_value=defer.succeed(None),
+            side_effect=ResourceLimitError(
+                403, "foo", limit_type=LimitBlockingTypes.HS_DISABLED
+            ),
+        )
+        self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
+
+        # Would be better to check contents, but 2 calls == set blocking event
+        self.assertEqual(self._send_notice.call_count, 2)
+
+    @override_config({"mau_limit_alerting": False})
+    def test_maybe_send_server_notice_when_alerting_suppressed_room_blocked(self):
+        """
+        When the room is already in a blocked state, test that when alerting
+        is suppressed that the room is returned to an unblocked state.
+        """
+        self._rlsn._auth.check_auth_blocking = Mock(
+            return_value=defer.succeed(None),
+            side_effect=ResourceLimitError(
+                403, "foo", limit_type=LimitBlockingTypes.MONTHLY_ACTIVE_USER
+            ),
+        )
+
+        self._rlsn._server_notices_manager.__is_room_currently_blocked = Mock(
+            return_value=defer.succeed((True, []))
+        )
+
+        mock_event = Mock(
+            type=EventTypes.Message, content={"msgtype": ServerNoticeMsgType}
+        )
+        self._rlsn._store.get_events = Mock(
+            return_value=defer.succeed({"123": mock_event})
+        )
+        self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
+
+        self._send_notice.assert_called_once()
+
 
 class TestResourceLimitsServerNoticesWithRealRooms(unittest.HomeserverTestCase):
+    servlets = [
+        admin.register_servlets,
+        login.register_servlets,
+        room.register_servlets,
+        sync.register_servlets,
+    ]
+
+    def default_config(self):
+        c = super().default_config()
+        c["server_notices"] = {
+            "system_mxid_localpart": "server",
+            "system_mxid_display_name": None,
+            "system_mxid_avatar_url": None,
+            "room_name": "Test Server Notice Room",
+        }
+        c["limit_usage_by_mau"] = True
+        c["max_mau_value"] = 5
+        c["admin_contact"] = "mailto:user@test.com"
+        return c
+
     def prepare(self, reactor, clock, hs):
         self.store = self.hs.get_datastore()
         self.server_notices_sender = self.hs.get_server_notices_sender()
@@ -173,22 +255,14 @@ class TestResourceLimitsServerNoticesWithRealRooms(unittest.HomeserverTestCase):
         if not isinstance(self._rlsn, ResourceLimitsServerNotices):
             raise Exception("Failed to find reference to ResourceLimitsServerNotices")
 
-        self.hs.config.limit_usage_by_mau = True
-        self.hs.config.hs_disabled = False
-        self.hs.config.max_mau_value = 5
-        self.hs.config.server_notices_mxid = "@server:test"
-        self.hs.config.server_notices_mxid_display_name = None
-        self.hs.config.server_notices_mxid_avatar_url = None
-        self.hs.config.server_notices_room_name = "Test Server Notice Room"
-
         self.user_id = "@user_id:test"
 
-        self.hs.config.admin_contact = "mailto:user@test.com"
-
     def test_server_notice_only_sent_once(self):
         self.store.get_monthly_active_count = Mock(return_value=1000)
 
-        self.store.user_last_seen_monthly_active = Mock(return_value=1000)
+        self.store.user_last_seen_monthly_active = Mock(
+            return_value=defer.succeed(1000)
+        )
 
         # Call the function multiple times to ensure we only send the notice once
         self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
@@ -198,7 +272,7 @@ class TestResourceLimitsServerNoticesWithRealRooms(unittest.HomeserverTestCase):
         # Now lets get the last load of messages in the service notice room and
         # check that there is only one server notice
         room_id = self.get_success(
-            self.server_notices_manager.get_notice_room_for_user(self.user_id)
+            self.server_notices_manager.get_or_create_notice_room_for_user(self.user_id)
         )
 
         token = self.get_success(self.event_source.get_current_token())
@@ -218,3 +292,86 @@ class TestResourceLimitsServerNoticesWithRealRooms(unittest.HomeserverTestCase):
             count += 1
 
         self.assertEqual(count, 1)
+
+    def test_no_invite_without_notice(self):
+        """Tests that a user doesn't get invited to a server notices room without a
+        server notice being sent.
+
+        The scenario for this test is a single user on a server where the MAU limit
+        hasn't been reached (since it's the only user and the limit is 5), so users
+        shouldn't receive a server notice.
+        """
+        self.register_user("user", "password")
+        tok = self.login("user", "password")
+
+        request, channel = self.make_request("GET", "/sync?timeout=0", access_token=tok)
+        self.render(request)
+
+        invites = channel.json_body["rooms"]["invite"]
+        self.assertEqual(len(invites), 0, invites)
+
+    def test_invite_with_notice(self):
+        """Tests that, if the MAU limit is hit, the server notices user invites each user
+        to a room in which it has sent a notice.
+        """
+        user_id, tok, room_id = self._trigger_notice_and_join()
+
+        # Sync again to retrieve the events in the room, so we can check whether this
+        # room has a notice in it.
+        request, channel = self.make_request("GET", "/sync?timeout=0", access_token=tok)
+        self.render(request)
+
+        # Scan the events in the room to search for a message from the server notices
+        # user.
+        events = channel.json_body["rooms"]["join"][room_id]["timeline"]["events"]
+        notice_in_room = False
+        for event in events:
+            if (
+                event["type"] == EventTypes.Message
+                and event["sender"] == self.hs.config.server_notices_mxid
+            ):
+                notice_in_room = True
+
+        self.assertTrue(notice_in_room, "No server notice in room")
+
+    def _trigger_notice_and_join(self):
+        """Creates enough active users to hit the MAU limit and trigger a system notice
+        about it, then joins the system notices room with one of the users created.
+
+        Returns:
+            user_id (str): The ID of the user that joined the room.
+            tok (str): The access token of the user that joined the room.
+            room_id (str): The ID of the room that's been joined.
+        """
+        user_id = None
+        tok = None
+        invites = []
+
+        # Register as many users as the MAU limit allows.
+        for i in range(self.hs.config.max_mau_value):
+            localpart = "user%d" % i
+            user_id = self.register_user(localpart, "password")
+            tok = self.login(localpart, "password")
+
+            # Sync with the user's token to mark the user as active.
+            request, channel = self.make_request(
+                "GET", "/sync?timeout=0", access_token=tok,
+            )
+            self.render(request)
+
+            # Also retrieves the list of invites for this user. We don't care about that
+            # one except if we're processing the last user, which should have received an
+            # invite to a room with a server notice about the MAU limit being reached.
+            # We could also pick another user and sync with it, which would return an
+            # invite to a system notices room, but it doesn't matter which user we're
+            # using so we use the last one because it saves us an extra sync.
+            invites = channel.json_body["rooms"]["invite"]
+
+        # Make sure we have an invite to process.
+        self.assertEqual(len(invites), 1, invites)
+
+        # Join the room.
+        room_id = list(invites.keys())[0]
+        self.helper.join(room=room_id, user=user_id, tok=tok)
+
+        return user_id, tok, room_id