public function testConstructor()
 {
     $helper = new AssetsHelper('foo', 'http://www.example.com', 'abcd');
     $this->assertEquals('/foo/', $helper->getBasePath(), '__construct() takes a base path as its first argument');
     $this->assertEquals(new AssetPackage('http://www.example.com', 'abcd'), $helper->getPackage(), '->__construct() creates a default asset package');
 }