fix #25

src/Filesystem.php

@@ -106,7 +106,8 @@ public function __construct($options = null, ?FilesystemInteractionInterface $fi
 
         // clean total space buffer on change cache_dir
         $events     = $this->getEventManager();
-        $handle     = null;
+        $handle     = function (): void {
+        };
         $totalSpace = &$this->totalSpace;
         $callback   = function ($event) use (&$events, &$handle, &$totalSpace) {
             $params = $event->getParams();

test/unit/Filesystem/TestAsset/DelayedFilesystemInteraction.php

@@ -14,9 +14,13 @@ final class DelayedFilesystemInteraction implements FilesystemInteractionInterfa
     /** @var FilesystemInteractionInterface */
     private $filesystem;
 
-    /** @var int */
+    /**
+     * @var int
+     * @psalm-var positive-int
+     */
     private $delay;
 
+    /** @psalm-param positive-int $delay */
     public function __construct(int $delay)
     {
         $this->filesystem = new LocalFilesystemInteraction();

test/unit/FilesystemTest.php

@@ -89,6 +89,16 @@ protected function tearDown(): void
         parent::tearDown();
     }
 
+    public function testFileSystemeOptionIsUpdatedWhenFileSystemeOptionIsChange(): void
+    {
+        $storage = new Filesystem();
+        $options = new FilesystemOptions();
+        $storage->setOptions($options);
+        $options->setCacheDir($this->tmpCacheDir);
+
+        $this->assertSame($this->tmpCacheDir, $storage->getOptions()->getCacheDir());
+    }
+
     public function testSetNoAtimeChangesAtimeOfMetadataCapability(): void
     {
         $capabilities = $this->storage->getCapabilities();