mozilla-release/testing/web-platform/tests/payment-request/change-shipping-option-manual.https.html

<!DOCTYPE html>
<!-- Copyright © 2017 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<meta charset="utf-8">
<title>Test for PaymentRequest shippingOption attribute</title>
<link rel="help" href="https://w3c.github.io/payment-request/#shippingoption-attribute">
<link rel="help" href="https://w3c.github.io/payment-request/#onshippingoptionchange-attribute">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
setup({ explicit_done: true, explicit_timeout: true });
const validMethod = Object.freeze({ supportedMethods: "basic-card" });
const applePayMethod = {
  supportedMethods: "https://apple.com/apple-pay",
  data: {
    version: 3,
    merchantIdentifier: "merchant.com.example",
    countryCode: "US",
    merchantCapabilities: ["supports3DS"],
    supportedNetworks: ["visa"],
  },
};
const validMethods = Object.freeze([validMethod, applePayMethod]);
const validAmount = Object.freeze({ currency: "USD", value: "5.00" });
const validTotal = Object.freeze({
  label: "label",
  amount: validAmount,
});
const validDetails = Object.freeze({ total: validTotal });

const validShippingOption1 = Object.freeze({
  id: "valid-1",
  label: "PICK ME!",
  amount: validAmount,
  selected: false,
});

const validShippingOption2 = Object.freeze({
  id: "initially-selected",
  label: "Valid shipping option 2",
  amount: validAmount,
  selected: true,
});

const requestShipping = Object.freeze({
  requestShipping: true,
});

function testShippingOptionChanged() {
  promise_test(async t => {
    const detailsWithShippingOptions = Object.assign({}, validDetails, {
      shippingOptions: [validShippingOption1, validShippingOption2],
    });
    const request = new PaymentRequest(
      validMethods,
      detailsWithShippingOptions,
      requestShipping
    );
    assert_equals(
      request.shippingOption,
      "initially-selected",
      "Must be 'initially-selected', as the selected member is true"
    );
    const listenerPromise = new Promise(resolve => {
      request.addEventListener("shippingoptionchange", () => {
        resolve(request.shippingOption);
      });
    });
    const handlerPromise = new Promise(resolve => {
      request.onshippingoptionchange = () => {
        resolve(request.shippingOption);
      };
    });
    request.show().catch(err => err);

    const results = await Promise.all([listenerPromise, handlerPromise]);
    assert_true(
      results.every(result => result === "valid-1"),
      "Expected valid-1 as the shippingOption"
    );
    await request.abort();
  });
  done();
}
</script>

<h2>PaymentRequest shippingOption attribute</h2>
<p>
  Click on each button in sequence from top to bottom without refreshing the page.
  Each button will bring up the Payment Request UI window.
</p>
<p>
  When the payment sheet is presented, select "PICK ME!" as the shipping option.
</p>
<ol>
  <li>
    <button onclick="testShippingOptionChanged()">
      When the shipping option is manually changed, request.shippingOption represents the user's choice.
    </button>
  </li>
</ol>
<small>
  If you find a buggy test, please <a href="https://github.com/web-platform-tests/wpt/issues">file a bug</a>
  and tag one of the <a href="https://github.com/web-platform-tests/wpt/blob/master/payment-request/META.yml">suggested reviewers</a>.
</small>