feat(email): configurable reply-to address (#3140)

fluxer_api/pkgs/email/src/SmtpEmailProvider.test.ts

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import {SmtpEmailProvider} from '@pkgs/email/src/SmtpEmailProvider';
+import {beforeEach, describe, expect, it, vi} from 'vitest';
+
+const {sendMail} = vi.hoisted(() => ({sendMail: vi.fn()}));
+
+vi.mock('nodemailer', () => ({
+	default: {createTransport: () => ({sendMail, verify: vi.fn()})},
+}));
+
+const MESSAGE = {
+	to: '[email protected]',
+	from: {email: '[email protected]', name: 'Fluxer'},
+	subject: 'Subject',
+	text: 'Body',
+};
+
+function createProvider(): SmtpEmailProvider {
+	return new SmtpEmailProvider({host: 'smtp.example.com', port: 587, username: 'user', password: 'pass'});
+}
+
+describe('SmtpEmailProvider', () => {
+	beforeEach(() => {
+		sendMail.mockReset();
+		sendMail.mockResolvedValue({});
+	});
+
+	it('passes the reply-to address to nodemailer', async () => {
+		await expect(createProvider().sendEmail({...MESSAGE, replyTo: '[email protected]'})).resolves.toBe(true);
+		expect(sendMail).toHaveBeenCalledWith({
+			to: '[email protected]',
+			from: 'Fluxer <[email protected]>',
+			replyTo: '[email protected]',
+			subject: 'Subject',
+			text: 'Body',
+		});
+	});
+
+	it('omits the reply-to address when the message has none', async () => {
+		await expect(createProvider().sendEmail(MESSAGE)).resolves.toBe(true);
+		expect(sendMail.mock.calls[0][0]).not.toHaveProperty('replyTo');
+	});
+});