diff --git a/test/core/test_loss.py b/test/core/test_loss.py
index 9b77d0a1..060aefb3 100644
--- a/test/core/test_loss.py
+++ b/test/core/test_loss.py
@@ -300,3 +300,22 @@ class TestLoss_v2(unittest.TestCase):
         b = torch.tensor([1, 0, 4])
         ans = l1({"my_predict": a}, {"my_truth": b})
         self.assertEqual(ans, torch.nn.functional.nll_loss(a, b))
+
+class TestLosserError(unittest.TestCase):
+    def test_losser1(self):
+        # (1) only input, targets passed
+        pred_dict = {"pred": torch.zeros(4, 3)}
+        target_dict = {'target': torch.zeros(4).long()}
+        los = loss.CrossEntropyLoss()
+
+        print(los(pred_dict=pred_dict, target_dict=target_dict))
+
+    #
+    def test_AccuracyMetric2(self):
+        # (2) with corrupted size
+        pred_dict = {"pred": torch.zeros(16, 3, 4)}
+        target_dict = {'target': torch.zeros(16, 3).long()}
+        los = loss.CrossEntropyLoss()
+
+        print(los(pred_dict=pred_dict, target_dict=target_dict))
+