public function testLegend()
{
$oSeries = new Series('Series', array('Jan' => 1, 'Feb' => 5, 'Mar' => 2));
$oSeries->setShowSeriesName(true);
$oLine = new Line();
$oLine->addSeries($oSeries);
$phpPresentation = new PhpPresentation();
$oSlide = $phpPresentation->getActiveSlide();
$oChart = $oSlide->createChartShape();
$oChart->getPlotArea()->setType($oLine);
$pres = TestHelperDOCX::getDocument($phpPresentation, 'ODPresentation');
$element = '/office:document-content/office:body/office:chart/chart:chart/chart:legend';
$this->assertTrue($pres->elementExists($element, 'Object 1/content.xml'));
$element = '/office:document-content/office:body/office:chart/chart:chart/table:table/table:table-header-rows';
$this->assertTrue($pres->elementExists($element, 'Object 1/content.xml'));
$element = '/office:document-content/office:body/office:chart/chart:chart/table:table/table:table-header-rows/table:table-row';
$this->assertTrue($pres->elementExists($element, 'Object 1/content.xml'));
$element = '/office:document-content/office:body/office:chart/chart:chart/table:table/table:table-header-rows/table:table-row/table:table-cell';
$this->assertTrue($pres->elementExists($element, 'Object 1/content.xml'));
$element = '/office:document-content/office:body/office:chart/chart:chart/table:table/table:table-header-rows/table:table-row/table:table-cell[@office:value-type=\'string\']';
$this->assertTrue($pres->elementExists($element, 'Object 1/content.xml'));
}