public function file_get_contentsNonReadableFile()
{
vfsStreamWrapper::register();
vfsStreamWrapper::setRoot(new vfsStreamDirectory('root'));
vfsStream::newFile('new.txt', 00)->at(vfsStreamWrapper::getRoot())->withContent('content');
$this->assertEquals('', @file_get_contents(vfsStream::url('root/new.txt')));
}