What to put inside of training/testing image/label text files?

[Itaru Kishikawa]

I'm training for my own dataset, but not quite sure what to put in training/testing image/label text files. As far as I understood, the contents as follows:
train_image: <the list of paths of the original images>
train_label: <the list of paths of the images that is inversed in black and white where I want them to detect as the area (the correct, expected result)>
test_image: <the list of paths of the images I want to test>
test_label: <?>

What to put in the test_label?
Also, please correct me if I'm wrong.