Update data_factory.py: use training prompt for testing

Author: LSC2204

ltsm/data_provider/data_factory.py

@@ -277,7 +277,7 @@ def getDatasets(self)->Tuple[TSDataset, TSDataset, List[TSDataset]]:
 
 
             # Test Prompt
-            test_prompt_data_path = self.prompt_data_path + '/test'
+            test_prompt_data_path = self.prompt_data_path + '/train'
             sub_test_prompt_data, tmp = self.loadPrompts(data_path, test_prompt_data_path, buff)
             missing.update(set(tmp))
 
@@ -421,4 +421,4 @@ def get_data_loaders(args):
         num_workers=0,
     )
 
-    return train_loader, val_loader, test_loader, processor
+    return train_loader, val_loader, test_loader, processor