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

apps/meteor/client/startup/slashCommands/join.spec.ts

@@ -0,0 +1,60 @@
+import { createFakeMessage } from '../../../tests/mocks/data';
+import { slashCommands } from '../../lib/slashCommand';
+
+import './join';
+
+const getResultHandler = () => {
+	const { result } = slashCommands.commands.join;
+	expect(result).toBeDefined();
+	return result as NonNullable<typeof result>;
+};
+
+describe('/join slash command', () => {
+	afterEach(() => {
+		jest.restoreAllMocks();
+	});
+
+	it('redirects to /open and rewrites the command message when the user is already in the room', () => {
+		const result = getResultHandler();
+		const run = jest.spyOn(slashCommands, 'run').mockResolvedValue(undefined);
+		const params = {
+			cmd: 'join',
+			params: 'general',
+			msg: createFakeMessage({ _id: 'message-id', rid: 'room-id', msg: '/join general' }),
+			userId: 'user-id',
+		};
+
+		result({ error: 'error-user-already-in-room' }, undefined, params);
+
+		expect(params.cmd).toBe('open');
+		expect(params.msg.msg).toBe('/open general');
+		expect(run).toHaveBeenCalledWith({
+			command: 'open',
+			params: 'general',
+			message: params.msg,
+			triggerId: '',
+			userId: 'user-id',
+		});
+	});
+
+	it.each([
+		['a successful result', undefined],
+		['an unrelated structured error', { error: 'error-not-allowed' }],
+		['a generic error', new Error('Unexpected error')],
+	])('does not redirect to /open for %s', (_case, error) => {
+		const result = getResultHandler();
+		const run = jest.spyOn(slashCommands, 'run').mockResolvedValue(undefined);
+		const params = {
+			cmd: 'join',
+			params: 'general',
+			msg: createFakeMessage({ _id: 'message-id', rid: 'room-id', msg: '/join general' }),
+			userId: 'user-id',
+		};
+
+		result(error, undefined, params);
+
+		expect(params.cmd).toBe('join');
+		expect(params.msg.msg).toBe('/join general');
+		expect(run).not.toHaveBeenCalled();
+	});
+});