硒中 ExpectedConditions.elementToBeSelected 和 elementSelectionStateToBe 之间的区别

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

待选元素

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

元素选择状态ToBe

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

从方法签名中可以看出elementSelectionStateToBe收到boolean作为参数。您可以使用它通过传递参数来检查元素是否被选中，而您需要捕获异常来检查元素是否未被选中elementToBeSelected.

检查元素是否被选择

// 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
}