如何使用selenium webdriver声明多行警报文本？

Question

请查找我的示例警报代码：

alert('passed properties:\n' + passString +  ' \n\n Failed Properties:\n' + failString );

我的硒代码：

Alert alert = null;
alert = driver.switchTo.alert();
Assert.assertEquals("passed properties:\n<passString> \n\n Failed Properties:\n <failString>",alert.getText());