puppeteer:单击 shadowroot 中的按钮 [英] puppeteer: clicking button in shadowroot
问题描述
我在测试上下文中对 shadowroot 中的元素执行操作时遇到困难.假设我有一个 web 组件
并且它包含一个按钮
从 chrome 控制台,我可以执行以下操作:
document.getElementsByTagName('my-component')[0].shadowRoot.querySelector('#my-button').click()
我正在努力用 puppeteer 做同样的事情.
it('应该点击按钮', async() => {await page.goto(`https://localhost:${port}`, {waitUntil: ['networkidle0', 'load'],});await page.$eval('my-component', (el: Element) => {el.shadowRoot.querySelector('#my-button').click();});});
单击该按钮应该会向我的服务器发出一个 http 请求,该请求会检索一些数据,然后我想在 dom 中对这些数据进行断言.请求永远不会触发.建议?
根据
使用JS路径的例子:
it('应该点击按钮', async() => {await page.goto(`https://localhost:${port}`, {waitUntil: ['networkidle0', 'load'],});const button = await (await page.evaluateHandle(`<JS-path-here>`)).asElement();button.click();});
I'm having difficulties with actions on elements in shadowroot in my test context. Lets say I have a web component <my-component />
and it contains a button <input id="my-button" type="submit" />
From console in chrome, I can do the following:
document.getElementsByTagName('my-component')[0].shadowRoot.querySelector('#my-button').click()
Im struggling doing the same with puppeteer.
it('should click the button', async () => {
await page.goto(`https://localhost:${port}`, {
waitUntil: ['networkidle0', 'load'],
});
await page.$eval('my-component', (el: Element) => {
el.shadowRoot.querySelector('#my-button').click();
});
});
Clicking the button should fire an http request to my server that retrieves some data which I then want to assert on in the dom. The request never fires. Suggestions?
According to this comment from the Puppeteer Team the right way is to use JS path:
In Chrome 72 (current Canary) we introduced a new option - "Copy JS Path", located right next to the "Copy Selector" option:
Example using JS path:
it('should click the button', async () => {
await page.goto(`https://localhost:${port}`, {
waitUntil: ['networkidle0', 'load'],
});
const button = await (await page.evaluateHandle(`<JS-path-here>`)).asElement();
button.click();
});
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