public function testClear()
{
$data = new Dwoo_Data();
$data->assign(array('var2' => '1', 'var3' => 1, 'var4' => 5));
$data->clear(array('var2', 'var4'));
$this->assertEquals(array('var3' => 1), $data->getData());
$data->assign('foo', 'moo');
$data->clear('var3');
$this->assertEquals(array('foo' => 'moo'), $data->getData());
}
