RE: How to use PHPUnit in a MVC project

I'm experimenting with using DOM and Xquery to find if a given element
exists in the page body.
I implemented two new "assert" methods, to convert the HTML to DOM and
then evaluate an Xquery expression against it.

Function assertXquery($query, $htmlString) just checks if the Xquery
returned non-empty results.
Function assertXqueryContains($query, $needle, $htmlString) checks if
the string value of the element returned by the Xquery contains the
string in $needle.

I'm hoping to improve this code and post it soon, to accompany my
example application I used for the webinar.

Regards,
Bill Karwin

class GridTest extends PHPUnit_Framework_TestCase
{

    ...setUp() function omitted...

    protected function _xquery($query, $htmlString)
    {
        $doc = new DOMDocument();
        $doc->preserveWhiteSpace = false;
        $doc->loadHTML($htmlString);
        $xpath = new DOMXPath($doc);
        $results = $xpath->query($query);
        $this->assertFalse($results === false, "Xquery '$query'
failed");
        return $results;
    }

    public function assertXqueryContains($query, $needle, $htmlString)
    {
        $results = $this->_xquery($query, $htmlString);
        $this->assertNotEquals(0, $results->length,
            "Found no match for xquery '$query'");
        $haystack = $results->item(0)->nodeValue;
        $this->assertType('string', $haystack);
        $this->assertContains($needle, $haystack,
            "Found no match for '$needle' contained in '$haystack'");
    }

    public function assertXquery($query, $htmlString)
    {
        $results = $this->_xquery($query, $htmlString);
        $this->assertNotEquals(0, $results->length,
            "Found no match for xquery '$query'");
    }

    public function testIndexControllerIndexAction()
    {
        $this->_request->setControllerName('grid');
        $this->_request->setActionName('show');
        $response = $this->_front->dispatch();
        $this->assertFalse($response->isException());
        $body = $response->getBody();

        // probably should test one thing at a time, but this is just
for proof of concept
        $this->assertXqueryContains('//head/title', 'Zend Framework',
$body);
        $this->assertXqueryContains('//body/h1', 'Zend Framework',
$body);
        $this->assertXqueryContains('//body/h2', 'Tables', $body);
        $this->assertXquery('//body/ul', $body);
    }

}