selenium - Selenium 中 ExpectedConditions.elementToBeSelected 和 elementSelectionStateToBe 之间的区别

Question

selenium 中的 ExpectedConditions.elementToBeSelected 和 elementSelectionStateToBe 有什么区别？如何使用它？能举个例子吗？

Answer 1

要选择的元素

public static ExpectedCondition<java.lang.Boolean> elementToBeSelected(WebElement element)

ElementSelectionStateToBe

public static ExpectedCondition<java.lang.Boolean> elementSelectionStateToBe(WebElement element, boolean selected)

正如您从方法签名中看到的，elementSelectionStateToBe 接收 boolean 作为参数。您可以通过传递参数来检查元素是否被选中，而在 elementToBeSelected 中则需要捕获异常来检查元素是否未被选中。

检查元素是否被选中

// waits for the element to be selected
wait.until(ExpectedCondition.elementSelectionStateToBe(element, true)); 

// waits for the element to be selected
wait.until(ExpectedCondition.elementToBeSelected(element));

检查元素是否未被选择

// waits for the element **not** to be selected
wait.until(ExpectedCondition.elementSelectionStateToBe(element, false));

try {
    // waits for the element to be selected
    wait.until(ExpectedCondition.elementToBeSelected(element));
}
catch (TimeOutException)
{
    // the element is not selected
}