public function testMerge()
{
$this->object->addConstants(array('first' => 'to overwrite', 'second' => 'cannot be overwritten'));
$this->object->define('First')->setClass('To_Overwrite');
$second = $this->object->define('Second');
$builder = new ContainerBuilder();
$builder->addConstants(array('first' => 'new value', 'third' => 'unseen'));
$first = $builder->define('First')->setClass('Write_It_Over');
$third = $builder->define('Third');
$this->object->merge($builder);
$this->assertThat($this->object->getConstants(), $this->equalTo(array('first' => 'new value', 'second' => 'cannot be overwritten', 'third' => 'unseen')));
$this->assertThat($this->object->getDefinitions(), $this->equalTo(array('First' => $first, 'Second' => $second, 'Third' => $third)));
}
