The problems for test

[renmaqilong]

Thank you for your good work. However, I have some questions about the test.
1)It's hard to understand the code of the test part. Can we implement the test just by changing the train to test in the mode?
2) How can we get the dataset for testing? I didn't find it in the code. The dataset for training and evaling is easy to be obtained and it is easy to be understand.