public function testAssignProductToOption() { $product = new \Magento\Framework\DataObject(); $option = new \Magento\Framework\DataObject(); $this->_model->assignProductToOption($product, $option, $product); $this->assertSame($product, $option->getProduct()); $option = new \Magento\Framework\DataObject(); $this->_model->assignProductToOption(null, $option, $product); $this->assertSame($product, $option->getProduct()); }