public function testClickedButton()
{
$button = $this->getMockBuilder('Symfony\Component\Form\SubmitButton')
->setConstructorArgs(array(new SubmitButtonBuilder('submit')))
->setMethods(array('isClicked'))
->getMock();
$button->expects($this->any())
->method('isClicked')
->will($this->returnValue(true));
$this->form->add($button);
$this->form->submit(array());
$this->assertSame($button, $this->form->getClickedButton());
}