1) the payment form, not logged in
HTTP 303 -> /login?next=%2Fbills%2FB2940%2Fpayments%2Fnew
2) the login page, then a login WITHOUT its hidden token
HTTP 200
HTTP 403
3) the same login WITH the token
HTTP 303 -> /bills/B2940/payments/new
4) the payment form, logged in
HTTP 200
value="18000"
5) a transfer of 10000 without a reference
HTTP 422
Enter the payment reference (QRIS number, or bank + transfer number).
6) the same transfer with the reference
HTTP 303 -> /bills/B2940
7) the page the browser is sent to
HTTP 200
Payment of Rp 10.000 saved. Balance Rp 8.000.
