fix tests

Author: makasim

pkg/fs/FsContext.php

@@ -108,7 +108,7 @@ public function workWithFile(FsDestination $destination, string $mode, callable
         });
 
         try {
-            $file = fopen($destination->getFileInfo(), $mode);
+            $file = fopen((string) $destination->getFileInfo(), $mode);
             $this->lock->lock($destination);
 
             return call_user_func($callback, $destination, $file);

pkg/fs/FsProducer.php

@@ -41,7 +41,7 @@ public function send(PsrDestination $destination, PsrMessage $message): void
 
         $this->context->workWithFile($destination, 'a+', function (FsDestination $destination, $file) use ($message) {
             $fileInfo = $destination->getFileInfo();
-            if ($fileInfo instanceof TempFile && false == file_exists($fileInfo)) {
+            if ($fileInfo instanceof TempFile && false == file_exists((string) $fileInfo)) {
                 return;
             }