merge/overrides don't seem to be working correctly...

WorkerControllerTest.php

    public function setUp()
    {


        // The module configuration should still be applicable for tests.
        // You can override configuration here with test case specific values,
        // such as sample view templates, path stacks, module_listener_options,
        // etc.

        $configOverrides = [
            'doctrine' => [
                'connection' => [
                    // Configuration for service `doctrine.connection.orm_default` service
                    'orm_default' => [
                        // configuration instance to use. The retrieved service name will
                        // be `doctrine.configuration.$thisSetting`
                        'configuration' => 'orm_default',

                        // event manager instance to use. The retrieved service name will
                        // be `doctrine.eventmanager.$thisSetting`
                        'eventmanager' => 'orm_default',

                        'params' => [
                            'driver' => 'sqlite',
                            'user' => 'project',
                            'password' => 'project',
                            'memory' => true,
                        ],
                    ],
                ],
            ],
        ];

        $this->setApplicationConfig(ArrayUtils::merge(
        // Grabbing the full application configuration:
            include __DIR__ . '/../../../../config/application.config.php',
            $configOverrides
        ));
        parent::setUp();

        $services = $this->getApplicationServiceLocator();
        $config = $services->get('config');  // $config doesn't have a 'doctrine' key
//        unset($config['doctrine']);
        $services->setAllowOverride(true);
        $services->setService('config', $config);
        $services->setAllowOverride(false);
    }