WPCLI to array throws PHPUnit_Framework_Exception

[gherrink]

Hey,

I'm using the WPCLI module and when I call cliToArray I'm getting the exception:

[PHPUnit_Framework_Exception] preg_match() expects parameter 2 to be string, array given

With following stactrace:

#1  Codeception\Subscriber\ErrorHandler->errorHandler
#2  /home/user/.config/composer/vendor/lucatume/wp-browser/src/Codeception/Module/WPCLI.php:237
#3  Codeception\Module\WPCLI->cliToArray
#4  /var/www/wp/wp-content/plugins/some-plugin/tests/_support/_generated/AcceptanceTesterActions.php:3181
#5  /var/www/wp/wp-content/plugins/some-plugin/tests/acceptance/AdminPluginListCest.php:15
#6  AdminPluginListCest->tryToActivatePlugin
#7  /home/user/.config/composer/vendor/lucatume/wp-browser/wpcept:52

I'm using wp-browser version 1.19.3.

[lucatume]

This is definitely a bug, will look into that; thanks for opening the issue.