public function testGroup()
{
$phpPresentation = new PhpPresentation();
$oSlide = $phpPresentation->getActiveSlide();
$oShapeGroup = $oSlide->createGroup();
$oShape = $oShapeGroup->createDrawingShape();
$oShape->setPath(PHPPRESENTATION_TESTS_BASE_DIR . '/resources/images/PhpPresentationLogo.png');
$oShape->getHyperlink()->setUrl('https://github.com/PHPOffice/PHPPresentation/');
$pres = TestHelperDOCX::getDocument($phpPresentation, 'ODPresentation');
$element = '/office:document-content/office:body/office:presentation/draw:page/draw:g';
$this->assertTrue($pres->elementExists($element, 'content.xml'));
$element = '/office:document-content/office:body/office:presentation/draw:page/draw:g/draw:frame/office:event-listeners/presentation:event-listener';
$this->assertTrue($pres->elementExists($element, 'content.xml'));
}