[Fix] Fix unit test of hardpack

Author: HAOCHENYE

tests/datasets/test_dataset.py

@@ -61,7 +61,7 @@ def test_hard_pack_dataset(random_length, global_pack):
 
     total_input_ids = list(chain(*input_ids_list))
 
-    random_gen = random.Random(10)
+    random_gen = np.random.RandomState(10)
     if global_pack:
         expected_sample = [[i["input_ids"] for i in d] for d in datasets]
         expected_sample = list(chain.from_iterable(expected_sample))