I am currently trying to write some unit test against my zend framework controller. When I run the following code I receive this error:

public function testListActionShouldContainListTable()
    {

        $this->loginToSystem();

        $uri = $this->_uriBase . 'campaign/list';
        $_SERVER["REQUEST_URI"] = $uri;

        $this->dispatch('/campaign/list');
        $this->assertController('campaign');
        $this->assertAction('list');
        $this->assertQueryCount('#list',1);
    }


CampaignControllerTests::testListActionShouldContainListTable
DOMDocument::loadHTML(): ID alrt already defined in Entity, line: 36

This occurs using any of the assertQuery and assertQueryContains methods. I have searched around but am not really finding a good answer to why it won't allow me to find this html node or how to get around this error.

Thanks in advance for any help!