public function testArchive()
{
$filesystem = new Filesystem();
$filesystem->mkdir($this->directory);
$git = new Git();
$git->init($this->directory);
$git->setRepository($this->directory);
$filesystem->dumpFile($this->directory . '/test.txt', 'hello');
$git->add('test.txt');
$git->commit('Initial commit');
$git->archive($this->directory . '/test.zip', 'master', null, array('format' => 'zip', 'prefix' => 'test/'));
$this->assertFileExists($this->directory . '/test.zip');
}