使用量角器拖放不能在不同的浏览器中工作？

Question

我有以下代码在本地机器上运行良好，Chrome 环境考虑拖放：

browser.actions().dragAndDrop(elem1, elem2).mouseUp().perform();

但是在 Firefox 浏览器的 Jenkins 环境中同样的代码抛出错误：

[e2e] [firefox #11-1] [31m    Failed: UnknownError: Cannot release a button when no button is pressed.'UnknownError: Cannot release a button when no button is pressed.' when calling method: [wdIMouse::up]
[e2e] [firefox #11-1]     Build info: version: '2.53.0', revision: '35ae25b', time: '2016-03-15 17:00:58'
[e2e] [firefox #11-1]     System info: host: '6b46e0e227dc', ip: '172.17.0.3', os.name: 'Linux', os.arch: 'amd64', os.version: '3.10.0-327.13.1.el7.x86_64', java.version: '1.8.0_03-Ubuntu'
[e2e] [firefox #11-1]     Driver info: driver.version: unknown[0m
[e2e] [firefox #11-1]   Stack:

Answer 1

我的语法错了：

browser.actions().dragAndDrop(elem1, elem2).mouseUp().perform();

应改为：

browser.actions().dragAndDrop(elem1, elem2).perform();

Answer 2

尝试在没有.mouseUp() 的情况下做同样的事情，以防.dragAndDrop() 已经拥有它。

dragAndDrop幕后是mouseDown + mouseMove + mouseUp：

/**
 * Convenience function for performing a "drag and drop" manuever. The target
 * element may be moved to the location of another element, or by an offset (in
 * pixels).
 * @param {!webdriver.WebElement} element The element to drag.
 * @param {(!webdriver.WebElement|{x: number, y: number})} location The
 *     location to drag to, either as another WebElement or an offset in pixels.
 * @return {!webdriver.ActionSequence} A self reference.
 */
webdriver.ActionSequence.prototype.dragAndDrop = function(element, location) {
  return this.mouseDown(element).mouseMove(location).mouseUp();
};