WPLoader throws an exception, $merged_filters is not an array

[forjoyilive]

Hi, I'm new to testing of this kind, so let me know if I'm missing something.

When I run wpcept run I get this error before the integration tests run:
array_intersect_key(): Argument #1 is not an array

Commenting out the WPLoader line in the integration.suite.yml file "fixes" the problem. Here's a verbose output:

    Including plugin [ananda-x/ananda-x.php] files

      The following tables will be dropped: 
      	- posts
      	- comments
      	- links
      	- options
      	- postmeta
      	- terms
      	- term_taxonomy
      	- term_relationships
      	- termmeta
      	- commentmeta
      
      Installing WordPress...
      Installing network...
      
      Network activating plugin [ananda-x/ananda-x.php]...
   
                                                          
      [PHPUnit_Framework_Exception]                       
      array_intersect_key(): Argument #1 is not an array  
                                                          
    
    Exception trace:
     () at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/Subscriber/ErrorHandler.php:75
     Codeception\Subscriber\ErrorHandler->errorHandler() at n/a:n/a
     array_intersect_key() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/lucatume/wp-browser/src/includes/tad-functions.php:29
     _without_filters() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/lucatume/wp-browser/src/includes/bootstrap.php:146
     require_once() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/lucatume/wp-browser/src/Codeception/Module/WPLoader.php:229
     Codeception\Module\WPLoader->loadWordPress() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/lucatume/wp-browser/src/Codeception/Module/WPLoader.php:151
     Codeception\Module\WPLoader->initialize() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/lucatume/wp-browser/src/Codeception/Module/WPLoader.php:139
     Codeception\Module\WPLoader->_initialize() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/SuiteManager.php:81
     Codeception\SuiteManager->initialize() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/Codecept.php:207
     Codeception\Codecept->runSuite() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/Codecept.php:178
     Codeception\Codecept->run() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/Command/Run.php:359
     Codeception\Command\Run->runSuites() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/Command/Run.php:286
     Codeception\Command\Run->execute() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/symfony/console/Command/Command.php:257
     Symfony\Component\Console\Command\Command->run() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/symfony/console/Application.php:849
     Symfony\Component\Console\Application->doRunCommand() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/symfony/console/Application.php:193
     Symfony\Component\Console\Application->doRun() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/symfony/console/Application.php:124
     Symfony\Component\Console\Application->run() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/src/Codeception/Application.php:103
     Codeception\Application->run() at /Users/nabhacosley/Sites/ananda-designs/plugins/ananda-x/vendor/codeception/codeception/codecept:33

Here's my WPLoader config with a few details obfuscated.

    WPLoader:
          multisite: true
          wpRootFolder: "/Users/nabhacosley/Local Sites/ananda-designs/app/public/"
          dbName: "local_wploader"
          dbHost: "..."
          dbUser: "..."
          dbPassword: "..."
          isolatedInstall: true
          wpDebug: true
          dbCharset: "utf8"
          dbCollate: ""
          tablePrefix: "wptests_"
          domain: "ananda-designs.dev"
          adminEmail: "[email protected]"
          title: "Ananda Designs Tests"
          phpBinary: "php"
          language: ""
          configFile: ""
          plugins: ['ananda-x/ananda-x.php']
          activatePlugins: ['ananda-x/ananda-x.php']
          booststrapActions: []

And integration.suite.yml:

    class_name: IntegrationTester
    modules:
        enabled:
            - \Helper\Integration
            - WPLoader

[lucatume]

Thanks for opening the issue and thank you for the detailed report: that helps a lot.

I will look into this as soon as possible and update the issue as soon as I've made progress on this.

[JDGrimes]

This has to do with WordPress 4.7 no longer using the $merged_filters global. See WordPoints/wordpoints#510 for where I fixed a similar issue in the PHPUnit tests for one of my plugins. Basically, you need to check if $GLOBALS['merged_filters'] is set before doing anything with it, because after 4.7 it won't be.

[forjoyilive]

That's right, I'm on WP 4.7 RC 1. Didn't think to mention it!

[lucatume]

thanks to both for the details and helps!