test: cover maintenance window monitor edits

server/test/integration/maintenanceWindowRepository.test.ts

@@ -0,0 +1,61 @@
+import { describe, expect, it, beforeAll, afterAll, beforeEach } from "@jest/globals";
+import mongoose from "mongoose";
+import { MongoMemoryServer } from "mongodb-memory-server";
+import MongoMaintenanceWindowsRepository from "../../src/domain/maintenance-windows/maintenance-window.repository.mongo.ts";
+import { MaintenanceWindowModel } from "../../src/domain/maintenance-windows/maintenance-window.model.ts";
+
+// ── Real-Mongo harness ─────────────────────────────────────────────────────────
+// Monitor membership edits are persisted by MongoDB's array update semantics. This
+// regression suite exercises the repository against a live engine so adding/removing
+// monitors cannot silently become a service-only mock assertion.
+
+let mongod: MongoMemoryServer;
+
+beforeAll(async () => {
+	mongod = await MongoMemoryServer.create();
+	await mongoose.connect(mongod.getUri());
+	await MaintenanceWindowModel.init();
+}, 120_000);
+
+afterAll(async () => {
+	await mongoose.disconnect();
+	await mongod.stop();
+});
+
+beforeEach(async () => {
+	await MaintenanceWindowModel.deleteMany({});
+});
+
+const makeId = () => new mongoose.Types.ObjectId();
+
+describe("MongoMaintenanceWindowsRepository", () => {
+	describe("updateById", () => {
+		it("persists added and removed monitorIds when editing a maintenance window", async () => {
+			const repo = new MongoMaintenanceWindowsRepository();
+			const teamId = makeId();
+			const removedMonitorId = makeId();
+			const keptMonitorId = makeId();
+			const addedMonitorId = makeId();
+			const window = await MaintenanceWindowModel.create({
+				teamId,
+				monitorIds: [removedMonitorId, keptMonitorId],
+				active: true,
+				name: "Scheduled maintenance",
+				duration: 60,
+				durationUnit: "minutes",
+				repeat: 0,
+				start: new Date("2026-04-10T02:00:00Z"),
+				end: new Date("2026-04-10T03:00:00Z"),
+			});
+
+			const updated = await repo.updateById(window._id.toString(), teamId.toString(), {
+				monitorIds: [keptMonitorId.toString(), addedMonitorId.toString()],
+			});
+
+			expect(updated.monitorIds).toEqual([keptMonitorId.toString(), addedMonitorId.toString()]);
+			expect(await repo.findByMonitorId(removedMonitorId.toString(), teamId.toString())).toEqual([]);
+			expect((await repo.findByMonitorId(keptMonitorId.toString(), teamId.toString())).map((item) => item.id)).toEqual([window._id.toString()]);
+			expect((await repo.findByMonitorId(addedMonitorId.toString(), teamId.toString())).map((item) => item.id)).toEqual([window._id.toString()]);
+		});
+	});
+});