* Add ckpt_path option to LightningModule.test()
If ckpt_path is "best" (default), it loads the best weights saved by ModelCheckpoint for the test loop.
If ckpt_path is a path to a checkpoint file, it loads the weights from the file for the test loop.
If ckpt_path is None, it uses the weights from the end of training for the test loop.
If model parameter is set, ckpt_path is ignored.
* Update test_set.rst
Co-authored-by: William Falcon <waf2107@columbia.edu>
Peter Yu