public function testAddColumn()
{
$cols = $this->getColArray();
$table = $this->getFromArrayDataTable($cols, $this->getRowsArray());
$table->addColumn('id6', 'label added', 'boolean');
$col = new DataColumn('id6', 'label added', 'boolean');
$cols = $table->getColumns();
$this->assertEquals(end($cols)->toArray(), $col->toArray());
$col2 = new DataColumn('id7', 'label added', 'boolean');
$table->addColumnObject($col2);
$cols = $table->getColumns();
$this->assertEquals(end($cols)->toArray(), $col2->toArray());
}