Hi,
The Classification learner App splits the data that you have provided into Training Data and Validation Data It will show the detailed evaluation on the validation data when you click on 'Confusion Chart' in your App. To test your model on the testing data, you will need to compute the evaluation metrics, like accuracy, yourself after getting the predictions on the testing data using 'predictFcn'. For this workflow, look at the answer here.
Hope this helps.
