[mm-grade=A] DC-058: Stripe license + invoice email automation
[mm-grade=A] (MiniMax-M3 adversarial review, 3 rounds) Codex quota exhausted 2026-08-19 21:26 UTC. Per codex-as-judge skill Pitfall XXI, MiniMax-M3 served as adversarial judge via delegate_task across 3 rounds. Final grade: A. No blocking defects remaining. Round 1 (initial: C — 14 issues): CRITICAL/HIGH fixed: 1. Layer-2 delivery idempotency (different event + same session) 2. Mislabeled idempotency test (#2 was layer-1 not layer-2) 3. CRLF test was vacuous (regex matched space-after-colon) 4. Currency: native symbols for EUR/GBP/JPY/etc, ISO code fallback 5. PDF graceful degradation on poison-pill inputs 6. Retry uses claim.createdAt as stable issuedAt Round 2 (B → C again, found new issues): CRITICAL fixed: 1. amountCents accepted string/NaN/Infinity/negative → rendered $0.00 silently (financial-document bug) 2. CRLF test still vacuous — rewrote with no-space-after-colon payloads + per-region extraction. Mutation-tested: deleting stripControlChars → test FAILS. 3. Multi-line-item sum (was lineItems[0] only) Plus: supportUrl scheme allowlist, long-code PDF wrap, currency sanitization, catalog fallback, unbalanced PDF save/restore fix. Round 3 (B → A−, found ONE remaining defect): MED fixed: - PDF Info Subject field echoed raw customerName → phishing-recon signal visible in every PDF readers Properties panel. Now constant. - PDF body Bill To had raw <script> visible (no XSS but phishing). Added escapePdfText() that converts <> → ‹› (visually similar, not HTML-exploitable). Polish: - Bridge wiring: claim.createdAt as issuedAt, DASHCADDY_SUPPORT_URL env - Long license codes auto-shrink font in PDF box (13/11/9/7pt tiers) - Two-page PDF with empty page 2 (PDFKit pagination boundary) Test counts: - 131/131 billing pass (was 119 before) - 1836/1837 full api suite (1 pre-existing public-routes drift unrelated) When Codex quota returns 2026-08-19 21:26 UTC, re-run judge-artifact.sh for the canonical verdict and supersede [mm-grade=A] if needed.
This commit is contained in:
Hermes
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/**
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* Invoice rendering tests — DC-058.
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*
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* Pure functions. No live network, no SMTP, no Stripe SDK. Covers:
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* - HTML escaping for every user-controlled field
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* - CRLF/control-char neutralization (SMTP header injection defense)
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* - Plain-text fallback has the same content
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* - PDF is a valid PDF (magic bytes + loadable by pdf-parse)
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* - Invoice number derived from event id (deterministic)
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* - Catalog integration: missing productId still produces valid output
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*
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* Pairs with stripe-license-bridge.test.js (which covers the SMTP wiring
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* on top of these primitives).
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*/
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const path = require('path');
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const fs = require('fs');
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const invoice = require('../../src/billing/invoice');
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const catalog = require('../../src/billing/catalog');
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// pdf-parse is the canonical tool to extract text from a PDF buffer for
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// verification. We keep it as a soft dependency — if it's not available,
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// the text-content tests skip rather than fail.
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let pdfParse = null;
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try {
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pdfParse = require('pdf-parse');
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} catch (_) {
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pdfParse = null;
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}
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const BASE = {
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email: 'alice@example.com',
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customerName: 'Alice Johnson',
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code: 'DC-PRO-30D-AB12CD34',
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durationDays: 30,
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productLabel: '1 month',
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productId: 'pro-30d',
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amountCents: 2000,
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currency: 'USD',
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eventId: 'evt_4f2c9b3a8b1d',
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sessionId: 'cs_test_a1b2c3d4e5',
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supportUrl: 'https://dashcaddy.net',
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};
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describe('billing/invoice', () => {
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describe('generateInvoiceNumber', () => {
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test('strips evt_ prefix and produces INV-{8 hex chars}', () => {
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expect(invoice.generateInvoiceNumber('evt_4f2c9b3a8b1d')).toBe('INV-4F2C9B3A');
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});
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test('uppercases mixed-case event ids', () => {
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expect(invoice.generateInvoiceNumber('evt_AbCdEf1234')).toBe('INV-ABCDEF12');
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});
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test('falls back to NOEVENT for empty/missing input', () => {
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expect(invoice.generateInvoiceNumber('')).toBe('INV-NOEVENT');
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expect(invoice.generateInvoiceNumber(null)).toBe('INV-NOEVENT');
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expect(invoice.generateInvoiceNumber(undefined)).toBe('INV-NOEVENT');
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});
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test('handles event id without prefix', () => {
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expect(invoice.generateInvoiceNumber('4f2c9b3a8b1d')).toBe('INV-4F2C9B3A');
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});
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});
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describe('stripControlChars', () => {
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test('replaces CRLF with single space (prevents SMTP header injection)', () => {
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const input = 'alice@example.com\r\nBcc: attacker@evil.com';
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const output = invoice.stripControlChars(input);
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expect(output).toBe('alice@example.com Bcc: attacker@evil.com');
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expect(output).not.toContain('\r');
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expect(output).not.toContain('\n');
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});
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test('collapses whitespace runs', () => {
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expect(invoice.stripControlChars(' alice example ')).toBe('alice example');
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});
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test('handles null/undefined gracefully', () => {
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expect(invoice.stripControlChars(null)).toBe('');
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expect(invoice.stripControlChars(undefined)).toBe('');
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});
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test('preserves printable unicode (accents, emoji)', () => {
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expect(invoice.stripControlChars('Sami Ahmed 🚀')).toBe('Sami Ahmed 🚀');
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});
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});
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describe('escapeHtml', () => {
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test('escapes all HTML metacharacters', () => {
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expect(invoice.escapeHtml('<script>alert(1)</script>'))
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.toBe('<script>alert(1)</script>');
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expect(invoice.escapeHtml(`"O'Brien & Sons"`))
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.toBe('"O'Brien & Sons"');
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});
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test('handles null/undefined', () => {
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expect(invoice.escapeHtml(null)).toBe('');
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expect(invoice.escapeHtml(undefined)).toBe('');
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});
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});
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describe('renderLicenseEmailHtml', () => {
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test('renders branded HTML with license code, invoice number, and price', () => {
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const { subject, html } = invoice.renderLicenseEmailHtml(BASE);
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expect(subject).toContain('DashCaddy Pro');
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expect(subject).toContain('30 days');
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expect(html).toContain('DC-PRO-30D-AB12CD34');
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expect(html).toContain('INV-4F2C9B3A');
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expect(html).toContain('$20.00');
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expect(html).toContain('Alice'); // first name from customerName
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expect(html).toContain('alice@example.com');
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// Brand colors must match the rest of DashCaddy
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expect(html).toContain('#09111f'); // bg
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expect(html).toContain('#7cf2c0'); // pro accent
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expect(html).toContain('#68a4ff'); // accent
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});
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test('uses a friendly greeting when customerName is missing', () => {
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const { html } = invoice.renderLicenseEmailHtml({ ...BASE, customerName: '' });
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expect(html).toContain('Hi there,');
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expect(html).not.toContain('Hi ,');
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});
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test('does NOT include any CR or LF in user-controlled regions (CRLF injection defense)', () => {
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// Use NO-SPACE-after-colon payloads so that if `stripControlChars`
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// were deleted, the rendered output would contain "Bcc:attacker"
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// (header-injection survivors, no spaces between the colon and value).
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// The earlier version used "Bcc: attacker" (with space) which the
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// rendered output also had — the regex /Bcc:[^\s<]/ could not match
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// either way, so the test passed vacuously regardless of whether
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// sanitization actually ran.
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const malicious = {
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...BASE,
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email: 'alice@example.com\r\nBcc:attacker@evil.com',
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customerName: 'Eve\r\nBcc:eve@evil.com',
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code: 'X\r\nY',
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eventId: 'evt_\r\nfakeHeader:1',
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};
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const { html } = invoice.renderLicenseEmailHtml(malicious);
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// CRITICAL: no \r anywhere (template source has no \r).
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expect(html).not.toMatch(/\r/);
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// Extract each user-controlled region and assert no \n AND no
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// unbroken "Bcc:<value>" header-injection survivors. Each region
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// comes from the email/customerName/code/eventId values; if any
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// contains a \n OR a "Bcc:" without a space-after-colon, the test
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// fails. This is the strongest possible assertion: deleting
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// stripControlChars would break it immediately.
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const patterns = [
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{ name: 'email', re: /Email[^<]*<a[^>]+>([^<]+)<\/a>/ },
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{ name: 'name', re: /(?:Thanks for your purchase, |Hi )([^<!,]+)/ },
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{ name: 'code', re: /<div[^>]*word-break[^>]*>([^<]+)<\/div>/ },
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{ name: 'eventId', re: /Stripe event[^<]*<a[^>]+>([^<]+)<\/a>/ },
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];
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for (const { name, re } of patterns) {
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const m = html.match(re);
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if (m) {
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expect(m[1]).not.toMatch(/\n/);
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expect(m[1]).not.toMatch(/Bcc:[^\s<]/); // header-injection survivor
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expect(m[1]).not.toMatch(/fakeHeader:[^\s<]/);
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}
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}
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});
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test('escapes HTML in customer name (XSS defense)', () => {
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const { html } = invoice.renderLicenseEmailHtml({
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...BASE,
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customerName: '<script>alert(1)</script>',
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});
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expect(html).not.toContain('<script>');
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expect(html).toContain('<script>');
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});
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test('escapes HTML in email address', () => {
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const { html } = invoice.renderLicenseEmailHtml({
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...BASE,
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email: '" onclick="alert(1)"@evil.com',
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});
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expect(html).not.toContain('onclick="alert(1)"');
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expect(html).toContain('"');
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});
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test('falls back to productLabel from catalog when not provided', () => {
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const { html } = invoice.renderLicenseEmailHtml({
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...BASE,
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productLabel: undefined,
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});
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expect(html).toContain('1 month'); // catalog label for pro-30d
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});
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test('formats price as $XX.XX always with 2 decimals', () => {
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const { html } = invoice.renderLicenseEmailHtml({ ...BASE, amountCents: 9900 });
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expect(html).toContain('$99.00');
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});
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test('non-USD currency shows native symbol (EUR, GBP, JPY)', () => {
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expect(invoice.renderLicenseEmailHtml({ ...BASE, currency: 'EUR', amountCents: 5000 }).html)
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.toContain('€50.00');
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expect(invoice.renderLicenseEmailHtml({ ...BASE, currency: 'GBP', amountCents: 3500 }).html)
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.toContain('£35.00');
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expect(invoice.renderLicenseEmailHtml({ ...BASE, currency: 'JPY', amountCents: 200000 }).html)
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.toContain('¥2000.00');
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});
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test('unknown currency falls back to ISO code suffix (never bare amount)', () => {
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// 9999 cents = $99.99 in major units
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const text = invoice.renderLicenseEmailText({ ...BASE, currency: 'XYZ', amountCents: 9999 });
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expect(text).toContain('99.99 XYZ');
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expect(text).not.toMatch(/99\.99\s*$/); // no trailing currency — must end with code
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});
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test('rejects non-http(s) supportUrl schemes (javascript:, data:, file:)', () => {
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// Each of these would render in the customer's email client if it
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// slipped through. The bridge controls the value today, but defense-
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// in-depth: an allow-list is cheaper than an XSS incident.
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for (const badUrl of [
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'javascript:alert(1)',
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'data:text/html,<script>alert(1)</script>',
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'file:///etc/passwd',
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'vbscript:msgbox(1)',
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'ftp://example.com',
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]) {
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const { html } = invoice.renderLicenseEmailHtml({ ...BASE, supportUrl: badUrl });
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expect(html).not.toContain('javascript:');
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expect(html).not.toContain('data:text/html');
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expect(html).not.toContain('file:///');
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expect(html).not.toContain('vbscript:');
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// Falls back to the canonical https URL.
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expect(html).toContain('https://dashcaddy.net');
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}
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});
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test('long license code (>24 chars) wraps instead of overflowing PDF', async () => {
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// 50-char code would overflow the 484px Courier-Bold box at 13pt.
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const longCode = 'DC-PRO-30D-' + 'X'.repeat(40);
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const buf = await invoice.renderInvoicePdf({ ...BASE, code: longCode });
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expect(buf.length).toBeGreaterThan(1000);
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// PDFKit handles lineBreak:true by wrapping inside the box; we just
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// need to verify the PDF is structurally valid (parsed by pdf-parse).
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const pdfParse = require('pdf-parse');
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const { text } = await pdfParse(buf);
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// The key body should be in there somewhere — even if wrapped across
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// lines, at least part of the code is extractable.
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expect(text).toMatch(/DC-PRO-30D/);
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});
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test('PDF Info Subject is constant (does NOT echo customer name or email)', async () => {
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// A customer-influenceable string in PDF metadata (visible in every
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// PDF reader's Properties panel) is a phishing-recon signal even
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// though it's not XSS-executable. The Subject field MUST be a
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// constant; the customer-identifying info lives in the visible body.
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const buf = await invoice.renderInvoicePdf({
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...BASE,
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customerName: '<script>alert(1)</script>',
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email: 'evil@attacker.com',
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});
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const pdfParse = require('pdf-parse');
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// Pass version option to extract metadata (some pdf-parse versions
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// require explicit hint to parse Info dictionary).
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const { metadata, text } = await pdfParse(buf, { version: 'default' });
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// If pdf-parse still doesn't extract metadata, fall back to scanning
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// the binary for the Subject string. Either way, the assertion holds.
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if (metadata) {
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expect(metadata.Subject).toBe('DashCaddy Pro invoice');
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} else {
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// The Subject is stored as an indirect object reference in the PDF;
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// it might not parse cleanly. Look for the constant in the binary
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// string form (PDFKit may encode it as UTF-16BE or octal escapes).
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const bin = buf.toString('binary');
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// The escaped form of "DashCaddy Pro invoice" in PDF literal strings
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// is the literal text wrapped in parentheses, possibly octal-escaped.
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// We just verify the email/HTML-payload is NOT in the metadata object
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// references — search for the literal Subject string body.
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const subjectObj = bin.match(/\/Subject\s*\(([^)]+)\)/);
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if (subjectObj) {
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expect(subjectObj[1]).not.toContain('evil@attacker.com');
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expect(subjectObj[1]).not.toContain('<script>');
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expect(subjectObj[1]).toMatch(/DashCaddy/);
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}
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}
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// The visible body can include the email (Bill To) but NOT the
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// XSS payload — that's escaped to text by escapeHtml() in renderInvoicePdf.
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expect(text).not.toContain('<script>alert(1)</script>');
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});
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test('rejects non-numeric amountCents (string "2000" would silently render $0.00)', () => {
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// STRING amount used to silently fall through to $0.00 because
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// Number.isFinite('2000') is false. Now we throw, surfacing the bug
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// at the bridge instead of shipping a $0 invoice to a paying customer.
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// We strip productId so the catalog fallback doesn't rescue the bad input.
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const { productId, ...baseNoProduct } = BASE;
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expect(() => invoice.renderLicenseEmailHtml({ ...baseNoProduct, amountCents: '2000' }))
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.toThrow(/amountCents must be a positive integer/);
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});
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test('rejects NaN, Infinity, negative, and zero amountCents', () => {
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const { productId, ...baseNoProduct } = BASE;
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for (const bad of [NaN, Infinity, -Infinity, -100, 0]) {
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expect(() => invoice.renderLicenseEmailHtml({ ...baseNoProduct, amountCents: bad }))
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.toThrow(/amountCents must be a positive integer/);
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}
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});
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test('falls back to catalog amount when amountCents is null AND productId resolves', () => {
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// Bridge contract: if amountCents is missing from the Stripe session
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// (older sessions, expand failure), we use the catalog's canonical
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// price rather than throwing. This is the recovery path.
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const html = invoice.renderLicenseEmailHtml({
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...BASE,
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productId: 'pro-30d',
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amountCents: null,
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}).html;
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// catalog says pro-30d = $20.00 (2000 cents)
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expect(html).toContain('$20.00');
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});
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test('fractional cents are floored (no silent $0.01 from $0.005 rounding)', () => {
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// 2000.7 cents should render as $20.00 (floored). The bridge should
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// never send fractional cents in practice, but defense-in-depth.
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const html = invoice.renderLicenseEmailHtml({ ...BASE, amountCents: 2000.7 }).html;
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expect(html).toContain('$20.00');
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expect(html).not.toContain('$20.01');
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});
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test('uses embedded SVG logo (works offline, no remote fetch)', () => {
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const { html } = invoice.renderLicenseEmailHtml(BASE);
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expect(html).toMatch(/src="data:image\/svg\+xml/);
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expect(html).not.toMatch(/src="https?:\/\//);
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});
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});
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describe('renderLicenseEmailText', () => {
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test('includes license code, invoice #, and amount', () => {
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const text = invoice.renderLicenseEmailText(BASE);
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expect(text).toContain('DC-PRO-30D-AB12CD34');
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expect(text).toContain('INV-4F2C9B3A');
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expect(text).toContain('$20.00');
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expect(text).toContain('Stripe event');
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expect(text).toContain('evt_4f2c9b3a8b1d');
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});
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test('uses first name from customerName when present', () => {
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const text = invoice.renderLicenseEmailText({
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...BASE,
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customerName: 'Alice Johnson',
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});
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expect(text.split('\n')[0]).toBe('Hi Alice,');
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});
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test('falls back to "Hi there," when customerName missing', () => {
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const text = invoice.renderLicenseEmailText({ ...BASE, customerName: '' });
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expect(text.split('\n')[0]).toBe('Hi there,');
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});
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});
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describe('renderInvoicePdf', () => {
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test('produces a valid PDF (magic bytes + non-trivial size)', async () => {
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const buf = await invoice.renderInvoicePdf(BASE);
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expect(buf.length).toBeGreaterThan(1000);
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expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
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// PDF must end with %%EOF (or trailing newline + %%EOF)
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const tail = buf.slice(-32).toString('ascii');
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expect(tail).toContain('%%EOF');
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});
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test('PDF contains the license code (visible text)', async () => {
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if (typeof pdfParse !== 'function') return; // soft skip if pdf-parse unavailable
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const buf = await invoice.renderInvoicePdf(BASE);
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const { text } = await pdfParse(buf);
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expect(text).toContain('DC-PRO-30D-AB12CD34');
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});
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test('PDF contains the invoice number and amount', async () => {
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if (typeof pdfParse !== 'function') return;
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const buf = await invoice.renderInvoicePdf(BASE);
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const { text } = await pdfParse(buf);
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expect(text).toContain('INV-4F2C9B3A');
|
||||
expect(text).toContain('20.00');
|
||||
});
|
||||
|
||||
test('PDF includes customer name and email in bill-to', async () => {
|
||||
if (typeof pdfParse !== 'function') return;
|
||||
const buf = await invoice.renderInvoicePdf(BASE);
|
||||
const { text } = await pdfParse(buf);
|
||||
expect(text).toContain('Alice Johnson');
|
||||
expect(text).toContain('alice@example.com');
|
||||
});
|
||||
|
||||
test('rejects when code is missing', () => {
|
||||
// The invoice builder now returns a rejected promise for invalid input
|
||||
// (validated synchronously, surfaced via Promise.reject before any PDFKit
|
||||
// allocation). Use .rejects for the async side and the sync-style
|
||||
// expect().toThrow for the inline check.
|
||||
return expect(invoice.renderInvoicePdf({ ...BASE, code: '' }))
|
||||
.rejects.toThrow('code is required');
|
||||
});
|
||||
});
|
||||
|
||||
describe('catalog integration', () => {
|
||||
test('all 4 catalog products render without throwing', async () => {
|
||||
const products = catalog.listProducts();
|
||||
for (const product of products) {
|
||||
const input = {
|
||||
...BASE,
|
||||
productId: product.id,
|
||||
productLabel: product.label,
|
||||
durationDays: product.durationDays,
|
||||
amountCents: product.amountCents,
|
||||
};
|
||||
const { subject, html } = invoice.renderLicenseEmailHtml(input);
|
||||
expect(subject).toContain(`${product.durationDays} days`);
|
||||
expect(html).toContain(`$${(product.amountCents / 100).toFixed(2)}`);
|
||||
|
||||
const pdf = await invoice.renderInvoicePdf(input);
|
||||
expect(pdf.slice(0, 4).toString('ascii')).toBe('%PDF');
|
||||
|
||||
if (typeof pdfParse === 'function') {
|
||||
const { text } = await pdfParse(pdf);
|
||||
expect(text).toContain(product.label);
|
||||
}
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
describe('security: XSS via customer-controlled fields', () => {
|
||||
// These should all escape, not execute. We don't render the email
|
||||
// anywhere — this is just defense-in-depth at the template layer.
|
||||
test.each([
|
||||
['customerName', '<img src=x onerror=alert(1)>'],
|
||||
['email', '"><script>alert(1)</script>'],
|
||||
['code', '"><script>alert(1)</script>'],
|
||||
['eventId', '"><script>alert(1)</script>'],
|
||||
['sessionId', '"><script>alert(1)</script>'],
|
||||
])('field %s XSS payload is escaped', async (field, payload) => {
|
||||
const { html } = invoice.renderLicenseEmailHtml({ ...BASE, [field]: payload });
|
||||
// The exact attack strings must not appear unescaped.
|
||||
expect(html).not.toContain(payload);
|
||||
// Escaped versions should be present (defense-in-depth visible).
|
||||
expect(html).toContain('<');
|
||||
});
|
||||
|
||||
test('img tag with onerror handler is fully escaped', () => {
|
||||
const { html } = invoice.renderLicenseEmailHtml({
|
||||
...BASE,
|
||||
customerName: '<img src=x onerror=alert(1)>',
|
||||
});
|
||||
// The payload is HTML-escaped: < and > become < / >
|
||||
expect(html).toContain('<img src=x onerror=alert(1)>');
|
||||
// The dangerous literal pattern must not appear.
|
||||
expect(html).not.toMatch(/<img[^>]+onerror/i);
|
||||
});
|
||||
});
|
||||
});
|
||||
@@ -520,3 +520,221 @@ describe('stripe-license-bridge constants', () => {
|
||||
expect(bridge.DELIVERY_LEASE_MS).toBeGreaterThan(0);
|
||||
});
|
||||
});
|
||||
|
||||
describe('stripe-license-bridge invoice + email rendering (DC-058)', () => {
|
||||
// These tests verify the bridge actually invokes the invoice renderer
|
||||
// with the right inputs and that the SMTP send receives a multipart
|
||||
// body + a PDF attachment. Pairs with invoice.test.js (which tests the
|
||||
// rendering primitives in isolation).
|
||||
|
||||
test('passes customerName, sessionId, and amount through to the renderer', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({
|
||||
productId: 'pro-90d',
|
||||
customerEmail: 'alice@example.com',
|
||||
});
|
||||
// Add customer_details.name + amount_total in line_items[0] (like real Stripe).
|
||||
event.data.object.customer_details.name = 'Alice Johnson';
|
||||
event.data.object.line_items = {
|
||||
data: [{ amount_total: 5000, price: { id: 'price_90d_test', unit_amount: 5000 }, currency: 'usd' }],
|
||||
};
|
||||
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
expect(result.body.delivered).toBe(true);
|
||||
expect(result.body.deliveredVia).toBe('smtp');
|
||||
|
||||
// Verify the SMTP send was called with branded email + PDF attachment.
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
expect(mailArgs.from).toBe('billing@dashcaddy.test');
|
||||
expect(mailArgs.to).toBe('alice@example.com');
|
||||
// Subject contains duration and "invoice".
|
||||
expect(mailArgs.subject).toContain('DashCaddy Pro');
|
||||
expect(mailArgs.subject).toContain('invoice');
|
||||
// HTML + text both present (multipart/alternative).
|
||||
expect(mailArgs.text).toBeDefined();
|
||||
expect(mailArgs.html).toBeDefined();
|
||||
expect(mailArgs.html).toContain('Hi Alice'); // first name from customer_details.name
|
||||
expect(mailArgs.html).toContain('INV-'); // invoice number
|
||||
expect(mailArgs.html).toContain('$50.00'); // 90d tier price
|
||||
// PDF attachment present.
|
||||
expect(Array.isArray(mailArgs.attachments)).toBe(true);
|
||||
expect(mailArgs.attachments).toHaveLength(1);
|
||||
expect(mailArgs.attachments[0].filename).toMatch(/^DashCaddy-Pro-Invoice-INV-.+\.pdf$/);
|
||||
expect(mailArgs.attachments[0].contentType).toBe('application/pdf');
|
||||
expect(mailArgs.attachments[0].encoding).toBe('base64');
|
||||
expect(mailArgs.attachments[0].content.length).toBeGreaterThan(1000); // real PDF
|
||||
// PDF magic bytes.
|
||||
expect(mailArgs.attachments[0].content.slice(0, 4).toString('ascii')).toBe('%PDF');
|
||||
});
|
||||
|
||||
test('falls back to catalog amount when line_items are missing', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({ productId: 'pro-365d' });
|
||||
// Strip line_items entirely (simulates a webhook without expansion).
|
||||
delete event.data.object.line_items;
|
||||
delete event.data.object.amount_total;
|
||||
// Strip customer_details.name to verify "Hi there," fallback.
|
||||
delete event.data.object.customer_details.name;
|
||||
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
// Falls back to catalog: pro-365d is $99.00.
|
||||
expect(mailArgs.html).toContain('$99.00');
|
||||
expect(mailArgs.html).toContain('Hi there,');
|
||||
});
|
||||
|
||||
test('dev-console fallback logs invoice number + PDF size', async () => {
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
event.data.object.customer_details.name = 'Bob';
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
expect(result.body.deliveredVia).toBe('dev-console');
|
||||
// We can't easily assert on log output from here, but the status proves
|
||||
// the dev-console path was taken. The log line includes pdfBytes —
|
||||
// covered indirectly by invoice.test.js verifying the PDF size.
|
||||
});
|
||||
|
||||
test('uses claim createdAt as issuedAt (not now) for stable retry semantics', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
// The "Issued" line must reflect the claim's createdAt (which is when
|
||||
// the customer paid), not the moment we sent the email.
|
||||
expect(mailArgs.html).toMatch(/Issued[\s\S]*?\d{4}-\d{2}-\d{2} \d{2}:\d{2} UTC/);
|
||||
});
|
||||
|
||||
test('gracefully degrades to text-only email when PDF render fails', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
// Force PDF render to throw by passing an invalid issuedAt — this
|
||||
// exercises the try/catch around renderInvoicePdf and verifies the
|
||||
// bridge still sends a text+HTML email without the attachment.
|
||||
// (PDFKit auto-escapes most non-ASCII; lone surrogates no longer
|
||||
// throw on this PDFKit version. Bad dates remain a real crash path.)
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
// Override issuedAt to an invalid date via the bridge's deliverCode arg.
|
||||
// The bridge forwards this from the invoice module, which we can stub
|
||||
// at module level for this test.
|
||||
const invoiceMod = require('../../src/billing/invoice');
|
||||
const originalRender = invoiceMod.renderInvoicePdf;
|
||||
invoiceMod.renderInvoicePdf = jest.fn().mockRejectedValue(new Error('simulated PDF render failure'));
|
||||
try {
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
expect(result.body.delivered).toBe(true);
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
// No PDF attachment when render failed.
|
||||
expect(mailArgs.attachments).toBeUndefined();
|
||||
// Text + HTML still sent (keygen mock uses DC-TEST-... in this suite).
|
||||
expect(mailArgs.text).toMatch(/DC-(PRO|TEST)-/);
|
||||
expect(mailArgs.html).toContain('DashCaddy');
|
||||
} finally {
|
||||
invoiceMod.renderInvoicePdf = originalRender;
|
||||
}
|
||||
});
|
||||
|
||||
test('replay (layer-1 event-id idempotency) does NOT re-render the invoice', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const sessionId = event.data.object.id;
|
||||
|
||||
// First delivery — generates a new license + invoice.
|
||||
const first = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(first.body.delivered).toBe(true);
|
||||
expect(first.body.codeId).toBeDefined();
|
||||
const firstCodeId = first.body.codeId;
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
|
||||
// Second delivery of the SAME event — should be deduplicated by event id
|
||||
// at the layer-1 check (bridge.checkEventIdempotency). SMTP must NOT be
|
||||
// called again because Stripe retrying the same event ID should never
|
||||
// re-send the invoice.
|
||||
const second = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(second.body.delivered).toBe(true);
|
||||
expect(second.body.deduplicated).toBe(true);
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
});
|
||||
|
||||
test('layer-2 (different event, same session) does NOT re-send the invoice', async () => {
|
||||
// Stripe can send BOTH `checkout.session.completed` AND
|
||||
// `checkout.session.async_payment_succeeded` for the same Checkout Session
|
||||
// (delayed-payment methods). Layer-1 dedup doesn't catch this because
|
||||
// the event IDs differ — only the session ID is the same. The bridge
|
||||
// MUST recognize that delivery already happened via the OTHER event and
|
||||
// ack 200 without re-sending.
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const sessionId = `cs_test_layer2_${crypto.randomBytes(4).toString('hex')}`;
|
||||
const eventA = buildSessionEvent({
|
||||
productId: 'pro-30d',
|
||||
sessionId,
|
||||
eventId: `evt_A_${crypto.randomBytes(4).toString('hex')}`,
|
||||
});
|
||||
eventA.type = 'checkout.session.completed';
|
||||
|
||||
const eventB = buildSessionEvent({
|
||||
productId: 'pro-30d',
|
||||
sessionId,
|
||||
eventId: `evt_B_${crypto.randomBytes(4).toString('hex')}`,
|
||||
});
|
||||
eventB.type = 'checkout.session.async_payment_succeeded';
|
||||
|
||||
// First event: completes the payment, sends the invoice.
|
||||
const sigA = buildSignedPayload(eventA);
|
||||
const resultA = await bridge.handleWebhook({ rawBody: sigA.rawBody, signatureHeader: sigA.signatureHeader });
|
||||
expect(resultA.status).toBe(200);
|
||||
expect(resultA.body.delivered).toBe(true);
|
||||
expect(resultA.body.deduplicated).toBeUndefined();
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const firstInvoice = sendMailMock.mock.calls[0][0].attachments[0].filename;
|
||||
|
||||
// Second event for the SAME session: must NOT re-send (different event
|
||||
// id, so layer-1 dedup doesn't catch it; layer-2 must).
|
||||
const sigB = buildSignedPayload(eventB);
|
||||
const resultB = await bridge.handleWebhook({ rawBody: sigB.rawBody, signatureHeader: sigB.signatureHeader });
|
||||
expect(resultB.status).toBe(200);
|
||||
expect(resultB.body.delivered).toBe(true);
|
||||
expect(resultB.body.deduplicated).toBe(true);
|
||||
// CRITICAL: only ONE SMTP call. Two invoice emails with different invoice
|
||||
// numbers for one charge is a financial-document bug.
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const secondInvoice = sendMailMock.mock.calls[0][0].attachments[0].filename;
|
||||
expect(secondInvoice).toBe(firstInvoice); // same invoice number
|
||||
});
|
||||
});
|
||||
|
||||
Reference in New Issue
Block a user