Testnet: Payment Link & Invoice Full Flow Test

[0xdevcollins]

Summary

Validate the no-code payment products end-to-end: a merchant creates a payment link and invoice, a consumer pays both, and the merchant confirms receipt.

Payment Link Flow Test

1. Merchant creates link: fixed amount $10, single-use, 7-day expiry
2. Copy link URL → open in incognito (simulates consumer)
3. Consumer landing page shows merchant branding, amount, description
4. Consumer selects crypto (Stellar USDC) and pays
5. Link status → USED in dashboard
6. Merchant receives real-time WebSocket notification: "Payment link just paid"
7. Toast notification appears in dashboard
8. Link correctly prevents reuse (returns expired page)

Invoice Flow Test

1. Merchant creates invoice: 2 line items, 10% tax, $0 discount, due in 7 days
2. Merchant sends invoice → email delivered to test inbox (Resend)
3. Consumer clicks "Pay Now" in email → invoice landing page opens
4. Invoice details render correctly (line items, tax, total)
5. Consumer pays via card (Stripe test card)
6. Invoice status → PAID in dashboard
7. PDF invoice generated, downloadable from dashboard
8. Merchant receives invoice.paid webhook event

Edge Cases

• Expired payment link shows correct expired state
• Partially paid invoice shows correct remaining balance
• Invoice sent to non-existent email address returns Resend error gracefully

Pass Criteria

• Payment link complete flow works end-to-end
• Invoice email delivered and pay flow works end-to-end
• All status transitions correct
• WebSocket real-time updates fire at each step