Add tests for transforms on dataset splits
In !168 (merged) I implemented a new feature and fixed some bugs (of !100 (merged)) but didn't have time to add relevant tests for the CI
- fixing bug described in !100 (comment 716536) : the transforms were not correctly applied when defined separately for training and validation (this feature had not been used nor described in the doc yet)
- allowing new transform lists to be specified at prediction step e2d5c27f
Description of its use during training or prediction in the documentation :