assert for dataloader

datasets/TTSDataset.py

@@ -136,6 +136,10 @@ class MyDataset(Dataset):
         else:
             text = np.asarray(
                 text_to_sequence(text, [self.cleaners]), dtype=np.int32)
+
+        assert text.size > 0, self.items[idx][1]
+        assert wav.size > 0, self.items[idx][1]
+
         sample = {
             'text': text,
             'wav': wav,