/** * @return void */ public function testSleep() { $excludedProperties = ['_eventManager', '_cacheManager', '_registry', '_appState', '_userData', '_config', '_validatorObject', '_roleFactory', '_encryptor', '_transportBuilder', '_storeManager', '_validatorBeforeSave']; $actualResult = $this->model->__sleep(); $this->assertNotEmpty($actualResult); $expectedResult = array_intersect($actualResult, $excludedProperties); $this->assertEmpty($expectedResult); }