public function file_put_contentsNonExistingFileNonWritableDirectory()
{
vfsStreamWrapper::register();
vfsStreamWrapper::setRoot(new vfsStreamDirectory('root', 00));
$this->assertFalse(@file_put_contents(vfsStream::url('root/new.txt'), 'This does not work.'));
$this->assertFalse(file_exists(vfsStream::url('root/new.txt')));
}