<!DOCTYPE html>
<meta charset="utf-8" />
<title>Tests for PaymentRequestEvent.changeShippingOption()</title>
<link
  rel="help"
  href="https://w3c.github.io/payment-handler/#changeshippingoption-method"
/>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<p>If the payment sheet is shown, please authorize the mock payment.</p>
<script>
const methodName = window.location.origin
    + '/payment-handler/change-shipping-option-manual-manifest.json';
function createRequest() {
  return new PaymentRequest([{supportedMethods: methodName}], {
      total: {label: 'Total', amount: {currency: 'USD', value: '0.01'}},
      shippingOptions: [{
        id: 'freeShippingOption',
        label: 'Free global shipping',
        amount: {
          currency: 'USD',
          value: '0',
        },
        selected: false,
      },
      {
        id: 'expressShippingOption',
        label: 'express global shipping',
        amount: {
          currency: 'USD',
          value: '0',
        },
        selected: true,
      }],
    }, {requestShipping: true});
}

promise_test(async (t) => {
  const request = createRequest();
  // Intentionally do not respond to the 'shippingoptionchange' event.
  const response = await test_driver.bless('showing a payment sheet', () =>
    request.show()
  );
  const complete_promise = response.complete('success');

  assert_equals(response.details.changeShippingOptionReturned, null);

  return complete_promise;
}, 'If updateWith(details) is not run, changeShippingOption() returns null.');

promise_test(async (t) => {
  const request = createRequest();
  request.addEventListener('shippingoptionchange', (event) => {
    assert_equals(request.shippingOption, 'freeShippingOption');
    event.updateWith({
      total: {label: 'Total', amount: {currency: 'GBP', value: '0.02'}},
      error: 'Error for test',
      modifiers: [
        {
          supportedMethods: methodName,
          data: {soup: 'potato'},
          total: {
            label: 'Modified total',
            amount: {currency: 'EUR', value: '0.03'},
          },
          additionalDisplayItems: [
            {
              label: 'Modified display item',
              amount: {currency: 'INR', value: '0.06'},
            },
          ],
        },
        {
          supportedMethods: methodName + '2',
          data: {soup: 'tomato'},
          total: {
            label: 'Modified total #2',
            amount: {currency: 'CHF', value: '0.07'},
          },
          additionalDisplayItems: [
            {
              label: 'Modified display item #2',
              amount: {currency: 'CAD', value: '0.08'},
            },
          ],
        },
      ],
      displayItems: [
        {
          label: 'Display item',
          amount: {currency: 'CNY', value: '0.04'},
        },
      ],
      shippingOptions: [
        {
          id: 'freeShippingOption',
          label: 'express global shipping',
          amount: {
            currency: 'USD',
            value: '0',
          },
          selected: true,
        }
      ],
    });
  });
  const response = await test_driver.bless('showing a payment sheet', () =>
    request.show()
  );
  const complete_promise = response.complete('success');
  const changeShippingOptionReturned =
    response.details.changeShippingOptionReturned;

  assert_equals(changeShippingOptionReturned.total.currency, 'GBP');
  assert_equals(changeShippingOptionReturned.total.value, '0.02');
  assert_equals(changeShippingOptionReturned.total.label, undefined);
  assert_equals(changeShippingOptionReturned.error, 'Error for test');
  assert_equals(changeShippingOptionReturned.modifiers.length, 1);
  assert_equals(changeShippingOptionReturned.displayItems, undefined);
  assert_equals(changeShippingOptionReturned.shippingOptions.length, 1);
  assert_equals(changeShippingOptionReturned.paymentMethodErrors, undefined);
  assert_equals(changeShippingOptionReturned.shippingAddressErrors, undefined);

  const shipping_option = changeShippingOptionReturned.shippingOptions[0];
  assert_equals(shipping_option.id, 'freeShippingOption' );
  assert_equals(shipping_option.label, 'express global shipping');
  assert_equals(shipping_option.amount.currency, 'USD');
  assert_equals(shipping_option.amount.value, '0');
  assert_true(shipping_option.selected);

  const modifier = changeShippingOptionReturned.modifiers[0];
  assert_equals(modifier.supportedMethods, methodName);
  assert_equals(modifier.data.soup, 'potato');
  assert_equals(modifier.total.label, '');
  assert_equals(modifier.total.amount.currency, 'EUR');
  assert_equals(modifier.total.amount.value, '0.03');
  assert_equals(modifier.additionalDisplayItems, undefined);

  return complete_promise;
}, 'The changeShippingOption() returns some details from the "shippingoptionchange" event\'s updateWith(details) call.');
</script>