drawPie( array( 'label' => 'My bar', 'color' => 'black', 'green', 'red', 'data' => array(50,50,50) ) ); $doc = new DOMDocument(); $doc->preserveWhiteSpace = false; $doc->loadXML($chart->render()); $xpath = new DOMXPath($doc); $xpath->registerNamespace('x', 'http://www.w3.org/2000/svg'); $path = $xpath->query('//x:path[@data-icinga-graph-type="pieslice"]'); $this->assertEquals(3, $path->length, 'Assert the correct number of datapoints being drawn as SVG bars'); } }