public function testSetVariable()
{
$builder = new DemoBuilder();
$builder->setVariables(array('foo' => 'bar'));
$builder->setVariable('foo', 'demo');
$this->assertEquals('demo', $builder->getVariable('foo'), 'setVariable overwrite the default variables setted');
$builder->setVariable('add', 'bar');
$this->assertEquals('bar', $builder->getVariable('add'), 'setVariable can also add a variable');
}
