public function testTypeScatter()
{
$oSeries = new Series('Series', array('Jan' => 1, 'Feb' => 5, 'Mar' => 2));
$oSeries->setShowSeriesName(true);
$oScatter = new Scatter();
$oScatter->addSeries($oSeries);
$phpPresentation = new PhpPresentation();
$oSlide = $phpPresentation->getActiveSlide();
$oChart = $oSlide->createChartShape();
$oChart->getPlotArea()->setType($oScatter);
$pres = TestHelperDOCX::getDocument($phpPresentation, 'ODPresentation');
$element = '/office:document-content/office:body/office:chart/chart:chart';
$this->assertTrue($pres->elementExists($element, 'Object 1/content.xml'));
$this->assertEquals('chart:scatter', $pres->getElementAttribute($element, 'chart:class', 'Object 1/content.xml'));
}