public function testDeleteFailure()
{
\TestFileSystemStream::setError(\TestFileSystemStream::ERROR_DELETE);
$test = new FileSystem('FileSystem', $this->dir);
$result = $test->run();
$this->assertEquals(\Jyxo\Beholder\Result::FAILURE, $result->getStatus());
$this->assertEquals(sprintf('Delete error %s', $this->dir), $result->getDescription());
}