Update TestGenerator.php

Author: GL-Ashish

src/Magento/FunctionalTestingFramework/Util/TestGenerator.php

@@ -265,7 +265,14 @@ public function throwExceptionIfDuplicateArgumentsFound(string $fileContents)
             }
         }
         foreach ($argArr as $key => $arrVal) {
-            
+            if (!empty($argArr[$key + 1]) && $argArr[$key + 1] === $arrVal) {
+                $err[] = 'Duplicate argument name '.$arrVal.' not allowed in helper or actionGroup';
+                throw new TestFrameworkException(implode(PHP_EOL, $err));
+            }
+            if (!empty($argArr[$key + 2]) && $argArr[$key + 2] === $arrVal) {
+                $err[] = 'Duplicate argument name '.$arrVal.' not allowed in helper or actionGroup';
+                throw new TestFrameworkException(implode(PHP_EOL, $err));
+            }
         }
     }