如何等待元素在 TestCafe 中消失?

How to wait for an element to disappear in TestCafe?

当我需要等待一个元素变得可见时,我可以像这样简单地调用选择器作为一个函数:

await element.with({ visibilityCheck: true })();

但是我怎么能等到一个元素消失呢?

要等待元素消失,您可以使用我们内置的断言等待机制。请参阅 the documentation 了解有关其工作原理的更多信息。

import { Selector } from 'testcafe';

fixture `fixture`
    .page `http://localhost/testcafe/`;

test('test 2', async t => {
    //step 1

    //wait for the element to disappear (assertion with timeout)
    await t.expect(Selector('element').exists).notOk({ timeout: 5000 });

    //next steps
});

或者您可以使用 ClientFunction:

import { ClientFunction } from 'testcafe';

fixture `fixture`
    .page `http://localhost/testcafe/`;

const elementVisibilityWatcher = ClientFunction(() => {
    return new Promise(resolve => {
        var interval = setInterval(() => {
            if (document.querySelector('element'))
                return;

            clearInterval(interval);
            resolve();
        }, 100);
    });
});

test('test 1', async t => {
    //step 1

    //wait for the element to disappear
    await elementVisibilityWatcher();

    //next steps
});

当您等待元素接收时,这会完成工作 display:none; ::

await browser.expect( Selector(".m-loader").visible ).notOk({ timeout: 30000 });