No. You can do usability testing in either a formal or informal setting.

用不着，无论使用正式的或非正式的设备你都可以做可用性测试。

youdao

Gastropubs serve restaurant standard food in a more informal setting than restaurants and many take pride in offering healthy food, locally produced.

这些新式餐吧供应饭店级饮食，环境却比饭店随便许多，许多新式餐吧则以供应当地生产、独具当地风味的健康饮食而引以为豪。

youdao

"This provides a bit of an informal setting in which to have some of these discussions," White House Press Secretary Robert Gibbs said earlier Tuesday about the dinner.

“这只是一个非正式的商讨的开始，”白宫新闻秘书罗伯特·吉布斯在周二早些时候针对会餐说到。

youdao

Though in the informal setting etiquette dictated no bows, Mr. Shimabukuro's head kept bobbing up and down involuntarily.

WSJ: His Ukelele Is On Fire | Jake Shimabukuro | Cultural Conversation by Matthew Gurewitsch

To improve confidence, we set up a social club to supplement our teaching activities, to allow for free conversation in an informal setting.

BBC: Doing Business in China

The G8 used to be for leaders of the main economies to chew the fat in an informal setting, without agendas or advisers, and he wants it to be more like that again.

BBC: Monsieur Hollande: Obama's new friend