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

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

最佳答案

ElementToBeSelected

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

ElementSelectionStateToBe

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

从方法中可以看到，签名elementSelectionStateToBe接收boolean作为参数。您可以使用此方法通过传递参数来检查是否选择了元素，而您需要捕获异常以检查是否在elementToBeSelected中未选择元素。

检查是否选择了元素

// 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));

检查是否未选择元素

// 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
}