public function testGetPlaceholder() { $model = new Mage_Catalog_Model_Product(); $this->_helper->init($model, 'image'); $placeholder = $this->_helper->getPlaceholder(); $this->assertEquals('Mage_Catalog::images/product/placeholder/image.jpg', $placeholder); // test that placeholder doesn't change, once initialized $model->setDestinationSubDir('other_image'); $this->assertEquals($placeholder, $this->_helper->getPlaceholder()); }