');     }      /** @test */     public function gets_files_from_a_directory()     {         mkdir($this->tempDir.'/sub/sub', 0000, true);         file_put_contents($this->tempDir.'/one.txt', '');         file_put_contents($this->tempDir.'/sub/two.txt', '');         file_put_contents($this->tempDir.'/sub/three.txt', '');         file_put_contents($this->tempDir.'/sub/sub/four.txt', '');          $files = $this->adapter->getFiles('sub');         $this->assertInstanceOf(FileCollection::class, $files);         $this->assertArraysHaveSameValues(             ['sub/two.txt', 'sub/three.txt'],             $files->all()         );          $files = $this->adapter->getFiles