檢視分层结构的原始碼

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|<center>'''分层结构'''<br><img
src=" https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg-blog.csdnimg.cn%2F20181205150258791.png%3Fx-oss-process%3Dimage%2Fwatermark%2Ctype_ZmFuZ3poZW5naGVpdGk%2Cshadow_10%2Ctext_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk0NDg4NA%3D%3D%2Csize_16%2Ccolor_FFFFFF%2Ct_70&refer=http%3A%2F%2Fimg-blog.csdnimg.cn&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1658419412&t=dd64e206f3a8be9fce231c02c793c700" width="280"></center><small>  圖片來自百度</small> 
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分层结构是指一种[[自动化测试]]代码的结构。这种结构的特点是将复杂的测试代码分成三个单向依赖的层次，采用分层结构构建的测试代码中的测试逻辑变得清晰，容易理解和维护。