更新：在当前的SeleniumLibrary（3.2+）中，有一个专用关键字：Get Element
Attribute（获取元素属性）
SeleniumLibrary for Robot
framework不支持获取CSS属性的值。但是，
value_of_css_propertySelenium
Python模块中有一种方法可以完全做到这一点。
为了在元素上调用方法，
CallMethod可以在任何Robot变量或对象上使用standard关键字。在下面的示例中，我使用Google主页创建了一个自定义关键字和一些示例。应该根据您的目的轻松修改它们。
*** Settings ***Library SeleniumLibrarySuite Teardown Close All Browsers*** Test Cases ***TC Open Browser http://www.google.com Chrome # a CSS property from the element. ${element_prop}= Get CSS Property Value id=SIvCob line-height Should Be Equal As Strings ${element_prop} 28px # a CSS property inherited from the <body> tag. ${body_prop}= Get CSS Property Value id=SIvCob font-family Should Be Equal As Strings ${body_prop} arial, sans-serif*** Keywords ***Get CSS Property Value [documentation] ... Get the CSS property value of an Element. ... ... This keyword retrieves the CSS property value of an element. The element ... is retrieved using the locator. ... ... Arguments: ... - locator(string) any Selenium Library supported locator xpath/css/id etc. ... - property_name (string) the name of the css property for which the value is returned. ... ... Returns (string) returns the string value of the given css attribute or fails. ... [Arguments] ${locator} ${attribute name} ${css}= Get WebElement ${locator} ${prop_val}= Call Method ${css} value_of_css_property ${attribute name} [Return] ${prop_val}
