snapshot of https://github.com/RocketChat/Rocket.Chat.git (develop, 2026-09-16; blobs > 131072B omitted)

apps/meteor/tests/data/messages.helper.ts

@@ -0,0 +1,52 @@
+import type { IRoom } from '@rocket.chat/core-typings';
+
+import { credentials, methodCall, request } from './api-data';
+import type { IRequestConfig } from './users.helper';
+
+type SendMessageParams = {
+	rid: IRoom['_id'];
+	msg: string;
+	config?: IRequestConfig;
+};
+
+/**
+ * Sends a text message to a room using the method.call/sendMessage DDP endpoint.
+ *
+ * This helper function allows sending messages to rooms (channels, groups, DMs)
+ * for federation testing scenarios using the DDP method format. It supports
+ * custom request configurations for cross-domain federation testing.
+ *
+ * @param rid - The unique identifier of the room
+ * @param msg - The message text to send
+ * @param config - Optional request configuration for custom domains
+ * @returns Promise resolving to the API response
+ */
+export const sendMessage = ({ rid, msg, config }: SendMessageParams) => {
+	if (!rid) {
+		throw new Error('"rid" is required in "sendMessage" test helper');
+	}
+	if (!msg) {
+		throw new Error('"msg" is required in "sendMessage" test helper');
+	}
+
+	const requestInstance = config?.request || request;
+	const credentialsInstance = config?.credentials || credentials;
+
+	return requestInstance
+		.post(methodCall('sendMessage'))
+		.set(credentialsInstance)
+		.send({
+			message: JSON.stringify({
+				method: 'sendMessage',
+				params: [
+					{
+						_id: `${Date.now()}-${Math.random()}`,
+						rid,
+						msg,
+					},
+				],
+				id: `${Date.now()}-${Math.random()}`,
+				msg: 'method',
+			}),
+		});
+};