Step 8.5: Move various room utilities out of createRoom

test/utils/membership-test.ts

@@ -0,0 +1,58 @@
+/*
+Copyright 2022 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 { EventEmitter } from "events";
+
+import { waitForMember } from "../../src/utils/membership";
+
+/* Shorter timeout, we've got tests to run */
+const timeout = 30;
+
+describe("waitForMember", () => {
+    let client;
+
+    beforeEach(() => {
+        client = new EventEmitter();
+    });
+
+    it("resolves with false if the timeout is reached", (done) => {
+        waitForMember(client, "", "", { timeout: 0 }).then((r) => {
+            expect(r).toBe(false);
+            done();
+        });
+    });
+
+    it("resolves with false if the timeout is reached, even if other RoomState.newMember events fire", (done) => {
+        const roomId = "!roomId:domain";
+        const userId = "@clientId:domain";
+        waitForMember(client, roomId, userId, { timeout }).then((r) => {
+            expect(r).toBe(false);
+            done();
+        });
+        client.emit("RoomState.newMember", undefined, undefined, { roomId, userId: "@anotherClient:domain" });
+    });
+
+    it("resolves with true if RoomState.newMember fires", (done) => {
+        const roomId = "!roomId:domain";
+        const userId = "@clientId:domain";
+        waitForMember(client, roomId, userId, { timeout }).then((r) => {
+            expect(r).toBe(true);
+            expect(client.listeners("RoomState.newMember").length).toBe(0);
+            done();
+        });
+        client.emit("RoomState.newMember", undefined, undefined, { roomId, userId });
+    });
+});