Tools/TestWebKitAPI/Tests/WebKitCocoa/apple-pay-availability.html

<!DOCTYPE html>
<body>
<script src="apple-pay.js"></script>
<script>
    window.addEventListener('load', async () => {
        const applePaySessionAvailable = !!window.ApplePaySession;
        const paymentRequestAvailable = !!window.PaymentRequest;
        if (!applePaySessionAvailable || !paymentRequestAvailable) {
            window.webkit.messageHandlers.testApplePay.postMessage({ applePaySessionAvailable, paymentRequestAvailable });
            return;
        }

        const supportsVersion = ApplePaySession.supportsVersion(1);
        const canMakePayments = ApplePaySession.canMakePayments();
        const canMakePaymentsWithActiveCard = await ApplePaySession.canMakePaymentsWithActiveCard('');

        const paymentRequest = new PaymentRequest([applePayMethod()], applePayDetails);
        const canMakePayment = await paymentRequest.canMakePayment();

        window.webkit.messageHandlers.testApplePay.postMessage({
            applePaySessionAvailable,
            paymentRequestAvailable,
            supportsVersion,
            canMakePayments,
            canMakePaymentsWithActiveCard,
            canMakePayment,
        });
    });
</script>