checkout-js-library/test/validationErrorsTests.js

```javascript const api = new ApiClient({ secretKey: 'secret', privatKey: 'privat', env: 'LIVE', // 'SANDBOX' // optional debugMode: true, // optional })

const assert = require('chai').assert;
const APIClient = require('../ApiClient');
const testHelper = require('./testHelper');

describe('Validation errors tests', function() {
  let client;

  before(async function() {
    client = new APIClient({ secretKey: testHelper.secretKey });
  });

  it('testCreatePaymentTokenRequest_InvalidCurrency', async function() {
    const tokenCreatePayload = {};
    tokenCreatePayload.value = '6';
    tokenCreatePayload.currency = 'kde';

    const error = await client.tokenService
      .createPaymentToken(tokenCreatePayload)
      .catch(err => err);

    assert.equal(true, error.response.data.message.indexOf('currency') > -1);
    assert.isNotNull(error.response.data.eventId);
  });

  it('testCreatePaymentTokenRequest_ValidationError', async function() {
    const tokenCreatePayload = {};
    tokenCreatePayload.currency = 'usd';

    const error = await client.tokenService
      .createPaymentToken(tokenCreatePayload)
      .catch(err => err);

    assert.equal(true, error.response.data.errorCode.indexOf('70000') > -1);
    assert.equal(true, error.response.data.message.indexOf('Validation') > -1);
    assert.isNotNull(error.response.data.errors);
  });
});