Update src/Illuminate/Testing/TestResponse.php

Co-authored-by: Mior Muhammad Zaki <crynobone@gmail.com>

Author: kayw-geek

src/Illuminate/Testing/TestResponse.php

@@ -10,6 +10,7 @@
 use Illuminate\Database\Eloquent\Collection as EloquentCollection;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Http\Request;
+use Illuminate\Http\Response;
 use Illuminate\Support\Arr;
 use Illuminate\Support\Carbon;
 use Illuminate\Support\Collection;
@@ -1739,6 +1740,8 @@ public function __call($method, $args)
             return $this->macroCall($method, $args);
         }
 
+        throw_if(!$this->baseResponse instanceof Response);
+
         return $this->baseResponse->{$method}(...$args);
     }
 }