public function testWriteFailure()
{
\TestFileSystemStream::setError(\TestFileSystemStream::ERROR_WRITE);
$test = new FileSystem('FileSystem', $this->dir);
// @ on purpose
$result = @$test->run();
$this->assertEquals(\Jyxo\Beholder\Result::FAILURE, $result->getStatus());
$this->assertEquals(sprintf('Write error %s', $this->dir), $result->getDescription());
}