add xfail for onnx test_layer_wise.py (#2129)

Author: xin3he

test/adaptor/onnxrt_adaptor/test_layer_wise.py

@@ -34,6 +34,19 @@ def __iter__(self):
         }, self.encoded_dict["labels"]
 
 
+def xfail(test_func):
+    def wrapper(*args, **kwargs):
+        try:
+            test_func(*args, **kwargs)
+        except Exception as e:
+            print(f"Test {test_func.__name__} expected to fail: {e}")
+            print("Test fails with transformers >= 4.49.0, please downgrade the version")
+            return
+        raise AssertionError(f"Test {test_func.__name__} was expected to fail but passed. We can remove xfail now")
+
+    return wrapper
+
+
 class TestWeightOnlyAdaptor(unittest.TestCase):
     @classmethod
     def setUpClass(self):
@@ -52,6 +65,7 @@ def tearDownClass(self):
         shutil.rmtree("nc_workspace", ignore_errors=True)
         shutil.rmtree("tiny-llama", ignore_errors=True)
 
+    @xfail  # Test fails with transformers >= 4.49.0, please downgrade the version
     def test_layer_wise_W8A8_quant(self):
         # layer-wise quantization
         layerwise_quantized_model_path = "tiny-llama/layerwise_quantized_decoder_model.onnx"