## RobotFramework的路径
要构建一个好用的测试工程目录结构，先要搞清楚RF是如何import Resource、Library以及variables文件的。

      .
      |-- Robot
      |   |-- cases
      |   |   |-- sys1
      |   |   |   `-- test1.robot
      |   |   |-- sys2
      |   |   |   |-- test2.robot
      |   |   |   |-- res2.txt
      |   |   |-- qa
      |   |   |   |-- user_story001.robot
      |   |   |   |-- ...
      |   |   `-- ...
      |   |-- resources
      |   |   |-- CalculatorLibrary.py
      |   |   |-- res1.txt
      |   |-- results
      |   |   `-- ...
      |   |-- aixscripts
      |       `-- ...
      |   `-- winscripts
      |       `-- ...