Update TestGenerator.php

Author: GL-Ashish

src/Magento/FunctionalTestingFramework/Util/TestGenerator.php

@@ -264,7 +264,16 @@ public function throwExceptionIfDuplicateArgumentsFound(string $fileContents)
                 $argArr[$key] = explode(" ", trim($fileVal))[1];
             }
         }
-        
+        foreach ($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));
+            }
+        }
     }
 
     /**