diff --git a/tests/test_util.py b/tests/test_util.py
index f7b305f..48c9695 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -251,6 +251,10 @@ class TestGetLibUrl(TestCase):
         self.request.environ["fanstatic.needed"] = needed
         self.request.script_name = "/wutta"
 
+    def test_unknown(self):
+        url = mod.get_liburl(self.request, "unknown")
+        self.assertIsNone(url)
+
     def test_buefy_default(self):
         url = mod.get_liburl(self.request, "buefy")
         self.assertEqual(url, "https://unpkg.com/buefy@0.9.25/dist/buefy.min.js")
diff --git a/tests/views/test_master.py b/tests/views/test_master.py
index 66c97f3..6edc420 100644
--- a/tests/views/test_master.py
+++ b/tests/views/test_master.py
@@ -495,6 +495,19 @@ class TestMasterView(WebTestCase):
             view = mod.MasterView(self.request)
             self.assertEqual(view.get_index_title(), "Wutta Widgets")
 
+    def test_get_index_url(self):
+        self.pyramid_config.add_route("widgets", "/widgets")
+        with patch.multiple(mod.MasterView, create=True, model_name="Widget"):
+
+            # normal
+            view = self.make_view()
+            self.assertEqual(view.get_index_url(), "http://example.com/widgets")
+
+            # list/index not supported
+            view = self.make_view()
+            view.listable = False
+            self.assertIsNone(view.get_index_url())
+
     def test_collect_labels(self):
 
         # no labels by default