diff --git a/cornac/datasets/gowalla.py b/cornac/datasets/gowalla.py
index c623fe194..9a78789dc 100644
--- a/cornac/datasets/gowalla.py
+++ b/cornac/datasets/gowalla.py
@@ -13,9 +13,7 @@
 # limitations under the License.
 # ============================================================================
 """
-This data is built based on the Ta Feng Grocery Dataset that contains 
-a Chinese grocery store transaction data from November 2000 to February 2001.
-Accessed at https://www.kaggle.com/datasets/chiranjivdas09/ta-feng-grocery-dataset
+Source: https://snap.stanford.edu/data/loc-gowalla.html
 """
 
 from ..utils import cache
@@ -38,10 +36,9 @@ def load_checkins(fmt="USITJson", reader: Reader = None) -> List:
         Location information is stored in `json` format
     """
     fpath = cache(
-        url="https://static.preferred.ai/datasets/gowalla/check-ins.zip",
+        url="https://static.preferred.ai/cornac/datasets/gowalla/check-ins.zip",
         unzip=True,
         relative_path="gowalla/check-ins.txt",
     )
     reader = Reader() if reader is None else reader
     return reader.read(fpath, fmt=fmt, sep="\t")
-
diff --git a/cornac/datasets/tafeng.py b/cornac/datasets/tafeng.py
index ac3c5faf6..9e99ec714 100644
--- a/cornac/datasets/tafeng.py
+++ b/cornac/datasets/tafeng.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 # ============================================================================
 """
-This data is built based on the Ta Feng Grocery Dataset that contains 
+This data is built based on the Ta Feng Grocery Dataset that contains
 a Chinese grocery store transaction data from November 2000 to February 2001.
 Accessed at https://www.kaggle.com/datasets/chiranjivdas09/ta-feng-grocery-dataset
 """
@@ -37,7 +37,7 @@ def load_basket(fmt="UBITJson", reader: Reader = None) -> List:
         Data in the form of a list of tuples (user, basket, item, timestamp, json).
     """
     fpath = cache(
-        url="https://static.preferred.ai/hieudo/basket.zip",
+        url="https://static.preferred.ai/cornac/datasets/tafeng/basket.zip",
         unzip=True,
         relative_path="tafeng/basket.txt",
     )
diff --git a/cornac/datasets/yoochoose.py b/cornac/datasets/yoochoose.py
index 726feff1d..a22384799 100644
--- a/cornac/datasets/yoochoose.py
+++ b/cornac/datasets/yoochoose.py
@@ -13,9 +13,7 @@
 # limitations under the License.
 # ============================================================================
 """
-This data is built based on the Ta Feng Grocery Dataset that contains 
-a Chinese grocery store transaction data from November 2000 to February 2001.
-Accessed at https://www.kaggle.com/datasets/chiranjivdas09/ta-feng-grocery-dataset
+Yoochoose Dataset is originally from the RecSys Challenge 2015.
 """
 
 from typing import List
@@ -39,7 +37,7 @@ def load_buy(fmt="SITJson", reader: Reader = None) -> List:
         Location information is stored in `json` format
     """
     fpath = cache(
-        url="https://static.preferred.ai/datasets/yoochoose/buy.zip",
+        url="https://static.preferred.ai/cornac/datasets/yoochoose/buy.zip",
         unzip=True,
         relative_path="yoochoose/buy.txt",
     )
@@ -62,7 +60,7 @@ def load_click(fmt="SITJson", reader: Reader = None) -> List:
         Location information is stored in `json` format
     """
     fpath = cache(
-        url="https://static.preferred.ai/datasets/yoochoose/click.zip",
+        url="https://static.preferred.ai/cornac/datasets/yoochoose/click.zip",
         unzip=True,
         relative_path="yoochoose/click.txt",
     )
@@ -85,7 +83,7 @@ def load_test(fmt="SITJson", reader: Reader = None) -> List:
         Location information is stored in `json` format
     """
     fpath = cache(
-        url="https://static.preferred.ai/datasets/yoochoose/test.zip",
+        url="https://static.preferred.ai/cornac/datasets/yoochoose/test.zip",
         unzip=True,
         relative_path="yoochoose/test.txt",
     )
diff --git a/tests/cornac/datasets/test_gowalla.py b/tests/cornac/datasets/test_gowalla.py
new file mode 100644
index 000000000..fb187aec7
--- /dev/null
+++ b/tests/cornac/datasets/test_gowalla.py
@@ -0,0 +1,33 @@
+# Copyright 2023 The Cornac Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import random
+import time
+import unittest
+
+from cornac.datasets import gowalla
+
+
+class TestGowalla(unittest.TestCase):
+
+    def test_load_checkins(self):
+        random.seed(time.time())
+        if random.random() > 0.8:
+            checkins = gowalla.load_checkins()
+            self.assertEqual(len(checkins), 6442892)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/tests/cornac/datasets/test_tafeng.py b/tests/cornac/datasets/test_tafeng.py
new file mode 100644
index 000000000..7b7e9827a
--- /dev/null
+++ b/tests/cornac/datasets/test_tafeng.py
@@ -0,0 +1,33 @@
+# Copyright 2023 The Cornac Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import random
+import time
+import unittest
+
+from cornac.datasets import tafeng
+
+
+class TestTafeng(unittest.TestCase):
+
+    def test_load_basket(self):
+        random.seed(time.time())
+        if random.random() > 0.8:
+            baskets = tafeng.load_basket()
+            self.assertEqual(len(baskets), 817741)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/tests/cornac/datasets/test_yoochoose.py b/tests/cornac/datasets/test_yoochoose.py
new file mode 100644
index 000000000..d7d67738a
--- /dev/null
+++ b/tests/cornac/datasets/test_yoochoose.py
@@ -0,0 +1,38 @@
+# Copyright 2023 The Cornac Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import random
+import time
+import unittest
+
+from cornac.datasets import yoochoose
+
+
+class TestYooChoose(unittest.TestCase):
+
+    def test_load_buy_click_test(self):
+        random.seed(time.time())
+        if random.random() > 0.8:
+            buy = yoochoose.load_buy()
+            click = yoochoose.load_click()
+            test = yoochoose.load_test()
+
+            self.assertEqual(len(buy), 1150753)
+            self.assertEqual(len(click), 33003944)
+            self.assertEqual(len(test), 8251791)
+
+
+if __name__ == "__main__":
+    unittest.main()