Thus far, for us it's been testing individual functions. Later in the term we'll talk about unit testing of classes.

至今为止，我们用到单元测试的地方,就是测试每个单独的方法,在后面我们会讲到类的单元测试。

麻省理工公开课 - 计算机科学及编程导论课程节选

I can build class stock, and I can test class stock, before I have a class market.

我可以建立一个stock类，然后在有macket类之前测试这个类。

麻省理工公开课 - 计算机科学及编程导论课程节选