private function updateDataset()
 {
     $dataset = $_SESSION['dataset'];
     if (empty($dataset)) {
         HomeView::show();
         header('Location: /' . $_SESSION['base']);
     } elseif ($_SERVER['REQUEST_METHOD'] == 'GET') {
         DatasetView::showUpdate();
     } else {
         $params = $dataset->getParameters();
         $params['dataset_name'] = array_key_exists('dataset_name', $_POST) ? $_POST['dataset_name'] : '';
         $params['description'] = array_key_exists('description', $_POST) ? $_POST['description'] : '';
         $updatedDataset = new Dataset($params);
         $updatedDataset->setDatasetId($dataset->getDatasetId());
         $returnedDataset = DatasetsDB::updateDataset($updatedDataset);
         if ($returnedDataset->getErrorCount() == 0) {
             // Show the Dataset view which should display the updated params
             DatasetView::show();
             header('Location: /' . $_SESSION['base'] . '/dataset/show/' . $dataset->getDatasetId());
         } else {
             // Carry over the sensors, if any
             $updatedDataset->setSensors($dataset->getSensors());
             $_SESSION['dataset'] = $updatedDataset;
             DatasetView::showUpdate();
         }
     }
 }
 public function testUpdateDatasetDescription()
 {
     $myDb = DBMaker::create('sensordatarepotest');
     Database::clearDB();
     $db = Database::getDB('sensordatarepotest', 'C:\\xampp\\myConfig.ini');
     $testDatasetId = 1;
     $datasets = DatasetsDB::getDatasetsBy('dataset_id', $testDatasetId);
     $dataset = $datasets[0];
     $this->assertTrue(empty($dataset->getDescription()), 'Before the update, it should have an empty description');
     $params = $dataset->getParameters();
     $params['description'] = 'Updated description';
     $newDataset = new Dataset($params);
     $newDataset->setDatasetId($testDatasetId);
     $returnedDataset = DatasetsDB::updateDataset($newDataset);
     $this->assertEquals($returnedDataset->getDescription(), $params['description'], 'After the update it should have the name ' . $params['description']);
 }