Update link to download SBU dataset. Enable the test again (#6638)

Co-authored-by: Ambuj Pawar <your_email@abc.example>

test/test_datasets_download.py

@@ -447,6 +447,7 @@ def make_parametrize_kwargs(download_configs):
             omniglot(),
             phototour(),
             sbdataset(),
+            sbu(),
             semeion(),
             stl10(),
             svhn(),
@@ -470,7 +471,6 @@ def test_url_is_accessible(url, md5):
     **make_parametrize_kwargs(
         itertools.chain(
             places365(),  # https://github.com/pytorch/vision/issues/6268
-            sbu(),  # https://github.com/pytorch/vision/issues/6390
         )
     )
 )

torchvision/datasets/sbu.py

@@ -22,7 +22,7 @@ class SBU(VisionDataset):
             downloaded again.
     """
 
-    url = "http://www.cs.virginia.edu/~vicente/sbucaptions/SBUCaptionedPhotoDataset.tar.gz"
+    url = "https://www.cs.rice.edu/~vo9/sbucaptions/SBUCaptionedPhotoDataset.tar.gz"
     filename = "SBUCaptionedPhotoDataset.tar.gz"
     md5_checksum = "9aec147b3488753cf758b4d493422285"