赛普拉斯：由于超时，在浏览器中通过的相同测试在无头模式下失败

Question

当我运行赛普拉斯 vue-cli-service test:e2e --headless 注册请求回调中的一些测试失败时：

而通常当运行在浏览器 (vue-cli-service test:e2e) 中他们通过时：

 it('Submit WITHOUT promo code', () => {
        cy.server();
        cy.route({method: 'POST', url: 'api/register'}).as('register');

        cy.get('.thz-items-loading').should('not.be.visible');
        cy.get('#btn-submit').should('not.be.disabled');

        cy.get('iframe[name^="__privateStripeFrame"]').then(($iframe) => {
            const $body = $iframe.contents().find('body');

            cy.wrap($body).find('input:eq(1)').click({force: true}).clear();
            cy.wrap($body).find('input:eq(1)').type('4000000000009979'); // stolen card
            cy.get('#btn-submit').click(); // SUBMIT FORM

            cy.wait('@register').then(xhr => {
                cy.contains('#card-errors', 'Your card was declined.');
                // cy.get('.thz-items-loading').should('not.be.visible'); // FAILS
                // cy.get('.thz-items-loading').to.have.style('display', 'none'); // FAILS
                cy.get('#btn-submit').should('not.be.disabled'); // FAILS
                (...)
            });

            return null;
        });
(...)

堆栈跟踪：

1) Trial registration form Submit WITHOUT promo code: CypressError: Timed out retrying: expected <button#btn-submit.thz-button.thz-radius-50.thz-btn-border-2.thz-align-center.thz-ff-g-hind-vadodara-600> not to be 'disabled' at Object.cypressErr (https://localhost:8000/__cypress/runner/cypress_runner.js:82944:11) at Object.throwErr (https://localhost:8000/__cypress/runner/cypress_runner.js:82909:18) at Object.throwErrByPath (https://localhost:8000/__cypress/runner/cypress_runner.js:82936:17) at retry (https://localhost:8000/__cypress/runner/cypress_runner.js:76454:16) at https://localhost:8000/__cypress/runner/cypress_runner.js:68529:18 at tryCatcher (https://localhost:8000/__cypress/runner/cypress_runner.js:131381:23) at Promise._settlePromiseFromHandler (https://localhost:8000/__cypress/runner/cypress_runner.js:129399:31) at Promise._settlePromise (https://localhost:8000/__cypress/runner/cypress_runner.js:129456:18) at Promise._settlePromise0 (https://localhost:8000/__cypress/runner/cypress_runner.js:129501:10) at Promise._settlePromises (https://localhost:8000/__cypress/runner/cypress_runner.js:129576:18) at Async._drainQueue (https://localhost:8000/__cypress/runner/cypress_runner.js:126305:16) at Async._drainQueues (https://localhost:8000/__cypress/runner/cypress_runner.js:126315:10) at Async.drainQueues (https://localhost:8000/__cypress/runner/cypress_runner.js:126189:14) at

cy.wait('@register') 回调中的以下几行应该以无头模式传递：

cy.get('.thz-items-loading').should('not.be.visible');
cy.get('.thz-items-loading').to.have.style('display', 'none');
cy.get('#btn-submit').should('not.be.disabled');

看起来超时是因为元素 #btn-submit 和 .thz-items-loading 在 @register 回调中无法访问，即使在这两种情况下它们都存在于 DOM 中，但为什么？他们在请求之前就可以访问了。

我正在运行ning Cypress 3.2.0 来自 Windows 10 上使用 vue-cli 创建的项目。经过测试的应用程序不是该项目的一部分，托管在其他地方并且是一个静态 html 页面。无头浏览器是 Electron 59.

Answer 1

事实证明，Electron 浏览器在执行像 Promises 这样的新语法时默默地失败了，这就是为什么解析 Promise 的 then() 回调中的代码应该更改显示属性 of .thz-items-loading 和#btn-submit 从未执行过，预期更改的测试从未通过。

在被测APPmain.js之前添加babel的polyfills修复了这个问题：

<script src="../../node_modules/@babel/polyfill/dist/polyfill.min.js"></script> <!-- or copy to root dir in build process -->
<script src="./main.js"></script>

赛普拉斯：由于超时，在浏览器中通过的相同测试在无头模式下失败

Cypress: same tests that pass in browser fail in headless mode due to timeout

javascript

vue-cli

cypress