text: /*
   * Copyright 2020 The Chromium Authors. All rights reserved.
   * Use of this source code is governed by a BSD-style license that can be
   * found in the LICENSE file.
   */
  
  const kDetails = {
    total: {label: 'TEST', amount: {currency: 'USD', value: '0.01'}},
  };
  
  /**
   * Checks whether the given payment method can make payments.
   * @param {string} method - The payment method identifier to check.
   * @return {string} - 'true', 'false', or error message on failure.
   */
  async function canMakePayment(method) { // eslint-disable-line no-unused-vars, max-len
    try {
      const request = new PaymentRequest([{supportedMethods: method}], kDetails);
      const result = await request.canMakePayment();
      return result ? 'true' : 'false';
    } catch (e) {
      return e.message;
    }
  }
  
  /**
   * Creates a PaymentRequest with |methodData| and checks canMakePayment.
   * @param {object} methodData - The payment method data to build the request.
   * @return {string} - 'true', 'false', or error message on failure.
   */
  async function canMakePaymentForMethodData(methodData) { // eslint-disable-line no-unused-vars, max-len
    try {
      const request = new PaymentRequest(methodData, kDetails);
      const result = await request.canMakePayment();
      return result ? 'true' : 'false';
    } catch (e) {
      return e.message;
    }
  }
  
  /**
   * Creates a PaymentRequest with |methodData|, checks canMakePayment twice, and
   * returns the second value.
   * @param {object} methodData - The payment method data to build the request.
   * @return {string} - 'true', 'false', or error message on failure.
   */
  async function canMakePaymentForMethodDataTwice(methodData) { // eslint-disable-line no-unused-vars, max-len
    try {
      const request = new PaymentRequest(methodData, kDetails);
      await request.canMakePayment(); // Discard first result.
      const result = await request.canMakePayment();
      return result ? 'true' : 'false';
    } catch (e) {
      return e.message;
    }
  }
  