量角器检查元素是否有子元素(Protractor check if element has children)

量角器检查元素是否有子元素(Protractor check if element has children)

我有一个click事件，其中子元素被附加到父元素，然后在另一个单击事件上被删除。 我想测试是否从父级中删除了这些元素。 所以有类似的东西

var container = element(by.css('.container')); expect(container.length).toEqual(0);

检查是否有任何子元素？

I have a click event where child elements get appended to a parent element and then get removed on another click event. I want to test if those elements got removed from the parent. So is there something like

var container = element(by.css('.container')); expect(container.length).toEqual(0);

that checks if there are any children elements?

最满意答案

有一些特殊方法可以检查元素是否存在：

elm.isPresent(); parentElm.isElementPresent(childElm); browser.isElementPresent(elm);

以下是它们之间的区别：

在量角器中，browser.isElementPresent vs element.isPresent vs element.isElementPresent

---

请注意，您仍然可以找到容器内的所有元素并检查计数：

var container = element(by.css('.container')); expect(container.all(by.xpath("./*")).count()).toEqual(0);

另一种方法是检查内部HTML：

expect(container.getInnerHTML()).toEqual("");

There are special methods for checking if an element is present:

elm.isPresent(); parentElm.isElementPresent(childElm); browser.isElementPresent(elm);

And here are the differences between them:

In protractor, browser.isElementPresent vs element.isPresent vs element.isElementPresent

---

Note that you can still find all elements inside a container and check the count:

var container = element(by.css('.container')); expect(container.all(by.xpath("./*")).count()).toEqual(0);

Another alternative could be to check the inner HTML:

expect(container.getInnerHTML()).toEqual("");