/** * @magentoDbIsolation enabled */ public function testSaveExtra() { $this->_model->loadByUsername(\Magento\TestFramework\Bootstrap::ADMIN_NAME); $this->_model->saveExtra(['test' => 'val']); $this->_model->loadByUsername(\Magento\TestFramework\Bootstrap::ADMIN_NAME); $extra = unserialize($this->_model->getExtra()); $this->assertEquals($extra['test'], 'val'); }