/**
* Creates a composer instance for testing.
*
* @return \Composer\Composer
*/
protected function createComposer()
{
$config = new \Composer\Config();
$config->merge(array('config' => array('vendor-dir' => dirname(__FILE__) . '/_files/vendor', 'bin-dir' => dirname(__FILE__) . '/_files/bin')));
$composer = new \Composer\Composer();
$composer->setConfig($config);
$composer->setPackage($this->createRootPackage());
return $composer;
}
