Also test for 204 - with empty reply

changedetectionio/tests/test_backend.py

@@ -58,7 +58,7 @@ def test_non_200_doesnt_trigger_change(client, live_server):
     set_modified_response()
 
     # https://github.com/dgtlmoon/changedetection.io/issues/962#issuecomment-1416807742
-    for ecode in ['429', '400', '429', '403', '404', '500']:
+    for ecode in ['429', '400', '204', '429', '403', '404', '500']:
         with open("test-endpoint-status-code.txt", 'w') as f:
             f.write(ecode)
 

changedetectionio/tests/util.py

@@ -127,6 +127,8 @@ def live_server_setup(live_server):
         # (Non-200 should get ignored)
         with open("test-datastore/endpoint-content.txt", "r") as f:
             contents ="{} code: {} ".format(f.read(), status_code)
+            if status_code == '204':
+                contents=''
             resp = make_response(contents, status_code)
             resp.headers['Content-Type'] = 'text/html'
             return resp, status_code