Fix error in download bundle from ngc (#6963)

Fixes #6962.



### Types of changes
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Non-breaking change (fix or new feature that would not break
existing functionality).
- [ ] Breaking change (fix or new feature that would cause existing
functionality to change).
- [ ] New tests added to cover the changes.
- [ ] Integration tests passed locally by running `./runtests.sh -f -u
--net --coverage`.
- [ ] Quick tests passed locally by running `./runtests.sh --quick
--unittests --disttests`.
- [ ] In-line docstrings updated.
- [ ] Documentation updated, tested `make html` command in the `docs/`
folder.

Signed-off-by: KumoLiu <yunl@nvidia.com>

Author: KumoLiu

monai/bundle/scripts.py

@@ -155,12 +155,12 @@ def _get_git_release_url(repo_owner: str, repo_name: str, tag_name: str, filenam
 
 
 def _get_ngc_bundle_url(model_name: str, version: str) -> str:
-    return f"https://api.ngc.nvidia.com/v2/models/nvidia/monaitoolkit/{model_name}/versions/{version}/zip"
+    return f"https://api.ngc.nvidia.com/v2/models/nvidia/monaitoolkit/{model_name.lower()}/versions/{version}/zip"
 
 
 def _get_monaihosting_bundle_url(model_name: str, version: str) -> str:
     monaihosting_root_path = "https://api.ngc.nvidia.com/v2/models/nvidia/monaihosting"
-    return f"{monaihosting_root_path}/{model_name}/versions/{version}/files/{model_name}_v{version}.zip"
+    return f"{monaihosting_root_path}/{model_name}/versions/{version}/files/{model_name.lower()}_v{version}.zip"
 
 
 def _download_from_github(repo: str, download_path: Path, filename: str, progress: bool = True) -> None:

tests/test_bundle_download.py

@@ -72,6 +72,12 @@
 ]
 
 TEST_CASE_8 = [
+    "Spleen_CT_Segmentation",
+    "cuda" if torch.cuda.is_available() else "cpu",
+    {"spatial_dims": 3, "out_channels": 5},
+]
+
+TEST_CASE_9 = [
     ["network.json", "test_output.pt", "test_input.pt", "large_files.yaml"],
     "test_bundle",
     "https://github.com/Project-MONAI/MONAI-extra-test-data/releases/download/0.8.1/test_bundle_v0.1.2.zip",
@@ -204,7 +210,7 @@ def test_load_weights(self, bundle_files, bundle_name, repo, device, model_file)
                 output_3 = model_3.forward(input_tensor)
                 assert_allclose(output_3, expected_output, atol=1e-4, rtol=1e-4, type_test=False)
 
-    @parameterized.expand([TEST_CASE_7])
+    @parameterized.expand([TEST_CASE_7, TEST_CASE_8])
     @skip_if_quick
     def test_load_weights_with_net_override(self, bundle_name, device, net_override):
         with skip_if_downloading_fails():
@@ -282,7 +288,7 @@ def test_load_ts_module(self, bundle_files, bundle_name, version, repo, device,
 
 
 class TestDownloadLargefiles(unittest.TestCase):
-    @parameterized.expand([TEST_CASE_8])
+    @parameterized.expand([TEST_CASE_9])
     @skip_if_quick
     def test_url_download_large_files(self, bundle_files, bundle_name, url, hash_val):
         with skip_if_downloading_fails():