public function testGetFactoryReturnsCorrectFactory()
 {
     $zfb = $this->getMock('Zend_Filter_Builder');
     $ff = new Zend_Filter_Builder_FluentFacade($zfb);
     $origFactory = $ff->getFactory();
     $this->assertType('Zend_Filter_Builder_FilterFactory', $origFactory);
     $mockFactory = $this->getMock('Zend_Filter_Builder_FilterFactory');
     $ff->setFactory($mockFactory);
     $this->assertSame($mockFactory, $ff->getFactory());
     $this->assertNotSame($mockFactory, $origFactory);
 }