upstream-rocketchat/apps/meteor/client/hooks/useDecryptedMessage.spec.ts

import { isE2EEMessage } from '@rocket.chat/core-typings';
import { renderHook, waitFor } from '@testing-library/react';

import { useDecryptedMessage } from './useDecryptedMessage';
import { e2e } from '../lib/e2ee/rocketchat.e2e';

// Mock the dependencies
jest.mock('@rocket.chat/core-typings', () => ({
	isE2EEMessage: jest.fn(),
}));

jest.mock('../lib/e2ee/rocketchat.e2e', () => ({
	e2e: {
		decryptMessage: jest.fn(),
	},
}));

jest.mock('react-i18next', () => ({
	useTranslation: () => ({
		t: (key: string) => key,
	}),
}));

describe('useDecryptedMessage', () => {
	beforeEach(() => {
		jest.clearAllMocks();
	});

	it('should return the original message for non-E2EE messages', () => {
		(isE2EEMessage as jest.MockedFunction<typeof isE2EEMessage>).mockReturnValue(false);
		const message: any = { msg: 'Hello, world!' };

		const { result } = renderHook(() => useDecryptedMessage(message));

		expect(result.current).toBe('Hello, world!');
		expect(e2e.decryptMessage).not.toHaveBeenCalled();
	});

	it('should return decrypted message for E2EE messages', async () => {
		(isE2EEMessage as jest.MockedFunction<typeof isE2EEMessage>).mockReturnValue(true);
		(e2e.decryptMessage as jest.Mock).mockResolvedValue({ msg: 'Decrypted message' });
		const message: any = { msg: 'Encrypted message' };
		const { result } = renderHook(() => useDecryptedMessage(message));

		await waitFor(() => {
			expect(result.current).not.toBe('E2E_message_encrypted_placeholder');
		});

		expect(result.current).toBe('Decrypted message');
		expect(e2e.decryptMessage).toHaveBeenCalledWith(message);
	});

	it('should handle E2EE messages with attachments', async () => {
		(isE2EEMessage as jest.MockedFunction<typeof isE2EEMessage>).mockReturnValue(true);
		(e2e.decryptMessage as jest.Mock).mockResolvedValue({
			attachments: [{ description: 'Attachment description' }],
		});
		const message: any = { msg: 'Encrypted message with attachment' };

		const { result } = renderHook(() => useDecryptedMessage(message));

		await waitFor(() => {
			expect(result.current).toBe('Attachment description');
		});

		expect(result.current).toBe('Attachment description');
		expect(e2e.decryptMessage).toHaveBeenCalledWith(message);
	});

	it('should handle E2EE messages with attachments but no description', async () => {
		(isE2EEMessage as jest.MockedFunction<typeof isE2EEMessage>).mockReturnValue(true);
		(e2e.decryptMessage as jest.Mock).mockResolvedValue({
			attachments: [{}],
		});
		const message: any = { msg: 'Encrypted message with attachment' };

		const { result } = renderHook(() => useDecryptedMessage(message));

		await waitFor(() => {
			expect(result.current).toBe('E2E_message_encrypted_placeholder');
		});

		await waitFor(() => {
			expect(result.current).toBe('Message_with_attachment');
		});

		expect(e2e.decryptMessage).toHaveBeenCalledWith(message);
	});
});