The setup is the follwing

Use the following filter: --filter="eZFlowSeleneseTests.*with_oe.html"

Create a ./settings/override/content.ini.append.php and add the following text

<?php /* #?ini charset="utf8"?
[PublishingSettings]
# Enable/Disable the asynchronous publishing feature
AsynchronousPublishing=enabled
*/ ?>

Create a .run/settings/override/cronjob.ini.append.php
<?php /* #?ini charset="utf8"?
[PublishingSettings]
[CronjobPart-frequent]
Scripts[]=indexcontent.php
*/ ?>

Edit .run/settings/override/site.ini.append.php and add
[SearchSettings]
DelayedIndexing=enabled

Create one article

1. Login to eZ Publish admin as admin
2. Click on “Content Structure” tab on top menu
3. Create one article with the following data:
Name: the lazy brown fox...
Summary: article for delay indexing

4. Click on "Send for publishing" button

Verify the window running "php bin/php/ezasynchronouspublisher.php" didn't throw the following error

Processing item #508
PHP Fatal error:  Call to undefined method eZDFSFileHandlerOracleBackend::_disconnect() in /var/www/apache2php53/ezp/.run/kernel/private/classes/clusterfilehandlers/ezdfsfilehandler.php on line 92

Fatal error: eZ Publish did not finish its request
The execution of eZ Publish was abruptly ended, the debug output is present below.
PHP Fatal error:  Call to undefined method eZDFSFileHandlerOracleBackend::_disconnect() in /var/www/apache2php53/ezp/.run/kernel/private/classes/clusterfilehandlers/ezdfsfilehandler.php on line 92

Fatal error: eZ Publish did not finish its request
The execution of eZ Publish was abruptly ended, the debug output is present below.