Test Learners: Store models when there is just one; properly stack them

Author: janezd

Orange/widgets/evaluate/owtestlearners.py

@@ -723,6 +723,8 @@ def __update(self):
         rstate = 42
         common_args = dict(
             store_data=True,
+            store_models=self.resampling in (OWTestLearners.TestOnTrain,
+                                             OWTestLearners.TestOnTest),
             preprocessor=self.preprocessor,
         )
         # items in need of an update
@@ -929,7 +931,7 @@ def is_empty(res):
         res.probabilities = np.vstack((x.probabilities, y.probabilities))
 
     if x.models is not None:
-        res.models = [xm + ym for xm, ym in zip(x.models, y.models)]
+        res.models = np.hstack((x.models, y.models))
     return res