datasource: fix empty jsonvalue (#76078)

tests/test_datasource.py

@@ -359,6 +359,14 @@ def test_jsonvalue_datasource_errors(pub):
         == "[DATASOURCE] JSON data source ('[{\"id\": \"1\", \"text\": \"foo\"}, {\"id\": \"2\", \"text\": \"\"}]') gave a non usable result"
     )
 
+    pub.loggederror_class.wipe()
+    # value not configured
+    datasource = {'type': 'jsonvalue', 'record_on_errors': True}
+    assert data_sources.get_items(datasource) == []
+    assert pub.loggederror_class.count() == 1
+    logged_error = pub.loggederror_class.select()[0]
+    assert logged_error.summary == "[DATASOURCE] JSON data source (None) gave a non usable result"
+
 
 def test_json_datasource(pub, requests_pub):
     get_request().datasources_cache = {}

wcs/data_sources.py

@@ -415,7 +415,7 @@ def _get_structured_items(data_source, mode=None, raise_on_error=False):
     if data_source.get('type') == 'jsonvalue':
         try:
             value = json.loads(data_source.get('value'))
-        except json.JSONDecodeError:
+        except (json.JSONDecodeError, TypeError):
             get_publisher().record_error(
                 'JSON data source (%r) gave a non usable result' % data_source.get('value'),
                 context='[DATASOURCE]',