Update CodeTestingAtomicFlow.py

CodeTestingAtomicFlow.py

@@ -36,4 +36,6 @@ class CodeTestingAtomicFlow(InterpreterAtomicFlow):
         self._prepare_code_and_lang(input_data)
         response = self._call()
         self._delete_file(file_loc)
-        return {"test_results": response}
+        if response.strip() == '':
+            response = "test passed"
+        return {"feedback": response}