public function testAddElements()
 {
     $c = new HTML_QuickForm2_ContainerImpl('cCOT1');
     $el1 = $c->addText('eCOT1', array('size' => 30), array('label' => 'Label'));
     $this->assertSame($el1, $c->getElementById('eCOT1-0'));
     $f = $c->addFieldset('fCOT1', null, array('label' => 'Fieldset'));
     $el2 = $f->addTextarea('eCOT2');
     $this->assertSame($el2, $c->getElementById('eCOT2-0'));
 }