function testElements()
{
$form = new QForm('form1', self::URL1);
$form->add(QForm::ELEMENT, 'username', array('_ui' => 'textbox', 'maxlength' => 15, 'class' => 'input'))->add(QForm::ELEMENT, 'password', array('_ui' => 'password', 'class' => 'input'));
$this->assertTrue($form->existsElement('username'));
$this->assertTrue($form->existsElement('password'));
$this->assertEquals('textbox', $form->element('username')->_ui);
$this->assertEquals('password', $form->element('password')->_ui);
$form->remove('password');
$this->assertFalse($form->existsElement('password'));
$attrs = $form['username']->attrs();
$this->assertEquals(array('id' => 'username', 'name' => 'username', 'maxlength' => 15, 'class' => 'input'), $attrs);
$all_attrs = $form['username']->allAttrs();
$this->assertEquals(array('id' => 'username', 'name' => 'username', 'maxlength' => 15, 'class' => 'input', '_ui' => 'textbox', '_data_binding' => true, '_nested_name' => 'form1'), $all_attrs);
unset($form['username']);
$this->assertFalse($form->existsElement('username'));
$this->assertFalse(isset($form['username']));
}