Add licence + test for spam.

src/Mjolnir.ts

@@ -1,5 +1,5 @@
 /*
-Copyright 2019-2021 The Matrix.org Foundation C.I.C.
+Copyright 2019-2024 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

test/integration/forwardedMentionsTest.ts

@@ -1,7 +1,24 @@
+/*
+Copyright 2024 The Matrix.org Foundation C.I.C.
+
+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.
+*/
+
 import { MatrixClient, UserID } from "@vector-im/matrix-bot-sdk";
 import { Mjolnir } from "../../src/Mjolnir";
 import { newTestUser, noticeListener } from "./clientHelper";
 import { strict as assert } from "assert";
+import expect from "expect";
 
 describe("Test: config.forwardMentionsToManagementRoom behaves correctly.", function () {
     let moderator: MatrixClient;
@@ -56,4 +73,45 @@ describe("Test: config.forwardMentionsToManagementRoom behaves correctly.", func
             "Forwarded mention format mismatch",
         );
     });
+
+    it("only forwards the first mention from a user.", async function () {
+        const mjolnir: Mjolnir = this.mjolnir!;
+        const botUserId = await mjolnir.client.getUserId();
+        mjolnir.config.forwardMentionsToManagementRoom = true;
+
+        const mentioninguser = await newTestUser(this.config.homeserverUrl, { name: { contains: "mentioninguser" } });
+        await moderator.joinRoom(mjolnir.managementRoomId);
+        const protectedRoom = await moderator.createRoom({ preset: "public_chat" });
+        await mjolnir.client.joinRoom(protectedRoom);
+        await mentioninguser.joinRoom(protectedRoom);
+        await mjolnir.protectedRoomsTracker.addProtectedRoom(protectedRoom);
+
+        await moderator.start();
+        let mentionCount = 0;
+        moderator.on(
+            "room.message",
+            noticeListener(this.mjolnir.managementRoomId, (event) => {
+                if (event.content.body.includes(`Bot mentioned`)) {
+                    mentionCount++;
+                }
+            }),
+        );
+
+        function delay(ms: number) {
+            return new Promise((resolve) => setTimeout(resolve, ms));
+        }
+
+        for (let index = 0; index < 5; index++) {
+            await mentioninguser.sendMessage(protectedRoom, {
+                msgtype: "m.text",
+                body: `Moderator: Testing this ${index}`,
+                ["m.mentions"]: {
+                    user_ids: [botUserId],
+                },
+            });
+            await delay(2000);
+        }
+
+        expect(mentionCount).toBe(1);
+    });
 });