add a test to hit empty searches

tests/api/test_search.py

@@ -103,6 +103,25 @@ def test_api_search_uuid(cript_api: cript.API, dynamic_material_data) -> None:
     assert str(uuid_list[0].uuid) == dynamic_material_data["uuid"]
 
 
+@pytest.mark.skipif(not HAS_INTEGRATION_TESTS_ENABLED, reason="requires a real cript_api_token")
+def test_empty_paginator(cript_api: cript.API) -> None:
+    non_existent_name = "This is an nonsensical name for a material and should never exist. %^&*()_"
+    exact_name_paginator = cript_api.search(node_type=cript.Material, search_mode=cript.SearchModes.EXACT_NAME, value_to_search=non_existent_name)
+    with pytest.raises(StopIteration):
+        next(exact_name_paginator)
+    exact_name_paginator.auto_load_nodes = False
+    with pytest.raises(StopIteration):
+        next(exact_name_paginator)
+
+    # Special 0 UUID should not exist
+    uuid_paginator = cript_api.search(node_type=cript.Material, search_mode=cript.SearchModes.UUID, value_to_search="00000000-0000-0000-0000-000000000000")
+    with pytest.raises(StopIteration):
+        next(uuid_paginator)
+    exact_name_paginator.auto_load_nodes = False
+    with pytest.raises(StopIteration):
+        next(uuid_paginator)
+
+
 @pytest.mark.skipif(not HAS_INTEGRATION_TESTS_ENABLED, reason="requires a real cript_api_token")
 def test_api_search_bigsmiles(cript_api: cript.API) -> None:
     """