public function testHasGetLinkByName()
 {
     $obj = new Collection();
     $obj->setLinks(array(new Link('http://www.google.com', 'alternate', 'google'), new Link('http://www.yahoo.com', 'alternate', 'yahoo')));
     $this->assertTrue($obj->hasLinkByName('google'));
     $this->assertTrue($obj->hasLinkByName('yahoo'));
     $this->assertFalse($obj->hasLinkByName('bing'));
     $this->assertSame('http://www.google.com', $obj->getLinkByName('google')->getHref());
     $this->assertSame('http://www.yahoo.com', $obj->getLinkByName('yahoo')->getHref());
     $this->assertSame('', $obj->getLinkByName('bing')->getHref());
 }