unit testing - Missing DbAdapter dependencies in Zend Framework 2 PHPUnit -

i have simple controller action

<?php namespace application\controller;  use zend\mvc\controller\abstractactioncontroller; use zend\view\model\viewmodel;  class indexcontroller extends abstractactioncontroller {     public function myaction() {         return new viewmodel();     } } 

and want test it:

<?php namespace applicationtest\controller;  use zend\test\phpunit\controller\abstracthttpcontrollertestcase;  class indexcontrollertest extends abstracthttpcontrollertestcase {     public function setup()     {         $this->setapplicationconfig(             include '../../../config/application.config.php'         );         /*         $test = $this->getapplicationconfig();         print_r($test);         die('~~~');         */         parent::setup();     }      public function testindexactioncanbeaccessed() {          $this->dispatch('/my');         $this->assertresponsestatuscode(200);          $this->assertmodulename('application');         $this->assertcontrollername('application\controller\index');         $this->assertcontrollerclass('indexcontroller');         $this->assertmatchedroutename('my');     } } 

when start phpunit, error:

1) applicationtest\controller\indexcontrollertest::testindexactioncanbeaccessed zend\servicemanager\exception\servicenotfoundexception: zend\servicemanager\servicemanager::get unable fetch or create instance zend\db\adapter\adapter  /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:456 /path/to/project/module/catalog/module.php:56 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:737 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:869 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:494 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:441 /path/to/project/module/catalog/module.php:51 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:737 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:869 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:494 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:441 /path/to/project/module/cache/module.php:58 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:737 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:869 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:494 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:441 /path/to/project/module/search/module.php:61 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:737 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:869 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:494 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:441 /path/to/project/module/search/module.php:81 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:737 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/abstractpluginmanager.php:205 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:494 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/servicemanager.php:441 /path/to/project/vendor/zendframework/zendframework/library/zend/servicemanager/abstractpluginmanager.php:103 /path/to/project/vendor/zendframework/zendframework/library/zend/view/renderer/phprenderer.php:378 /path/to/project/vendor/zendframework/zendframework/library/zend/view/renderer/phprenderer.php:397 /path/to/project/module/application/view/layout/layout.phtml:76 /path/to/project/module/application/view/layout/layout.phtml:76 /path/to/project/vendor/zendframework/zendframework/library/zend/view/renderer/phprenderer.php:507 /path/to/project/vendor/zendframework/zendframework/library/zend/view/view.php:205 /path/to/project/vendor/zendframework/zendframework/library/zend/mvc/view/http/defaultrenderingstrategy.php:126 /path/to/project/vendor/zendframework/zendframework/library/zend/eventmanager/eventmanager.php:472 /path/to/project/vendor/zendframework/zendframework/library/zend/eventmanager/eventmanager.php:207 /path/to/project/vendor/zendframework/zendframework/library/zend/mvc/view/http/defaultrenderingstrategy.php:136 /path/to/project/vendor/zendframework/zendframework/library/zend/eventmanager/eventmanager.php:472 /path/to/project/vendor/zendframework/zendframework/library/zend/eventmanager/eventmanager.php:207 /path/to/project/vendor/zendframework/zendframework/library/zend/mvc/application.php:332 /path/to/project/vendor/zendframework/zendframework/library/zend/mvc/application.php:307 /path/to/project/vendor/zendframework/zendframework/library/zend/test/phpunit/controller/abstractcontrollertestcase.php:255 /path/to/project/module/application/test/applicationtest/controller/indexcontrollertest.php:37 

why? i'm not using dbtable classes in action.