diff --git a/binderhub/tests/test_repoproviders.py b/binderhub/tests/test_repoproviders.py
index 591bc0848..ea3b6e4c0 100644
--- a/binderhub/tests/test_repoproviders.py
+++ b/binderhub/tests/test_repoproviders.py
@@ -220,12 +220,31 @@ async def test_dataverse(
             "https://demo.ckan.org/dataset/sample-dataset-1",
             "ckan-sample-dataset-1",
         ],
+        [
+            "https://demo.datashades.com/dataset/chart-test?activity_id=061888e9-e3c2-4769-b097-9c195a841e2f",
+            "https://demo.datashades.com/dataset/chart-test?activity_id=061888e9-e3c2-4769-b097-9c195a841e2f",
+            "chart-test.v1717501747",
+            "https://demo.datashades.com/dataset/chart-test?activity_id=061888e9-e3c2-4769-b097-9c195a841e2f",
+            "ckan-chart-test",
+        ],
+        [
+            "https://demo.datashades.com/dataset/chart-test/history/061888e9-e3c2-4769-b097-9c195a841e2f",
+            "https://demo.datashades.com/dataset/chart-test/history/061888e9-e3c2-4769-b097-9c195a841e2f",
+            "chart-test.v1717501747",
+            "https://demo.datashades.com/dataset/chart-test/history/061888e9-e3c2-4769-b097-9c195a841e2f",
+            "ckan-chart-test",
+        ],
+        ["https://demo.ckan.org/group/roger", None, None, None, None],
+        ["https://demo.ckan.org/dataset/nosuchdataset", None, None, None, None],
     ],
 )
 async def test_ckan(spec, resolved_spec, resolved_ref, resolved_ref_url, build_slug):
     provider = CKANProvider(spec=spec)
 
     ref = await provider.get_resolved_ref()
+    if not resolved_ref:
+        # We are done here if we don't expect to resolve
+        return
     assert resolved_ref in ref
 
     slug = provider.get_build_slug()