Fix env files for the codeception tests

Author: wppunk

.codeception.yml

@@ -10,7 +10,7 @@ extensions:
         - Codeception\Extension\RunFailed
 params:
     - env
-    - .env.development
+    - .codeception/_config/params.php
 settings:
     backup_globals: false
     colors: true

.codeception/_config/params.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * Loads configuration parameters.
+ *
+ * Don't modify this file directly.
+ * Create and use 'params.local.php' instead.
+ *
+ * @since   {VERSION}
+ * @link    {URL}
+ * @license GPLv2 or later
+ * @package PluginName
+ * @author  {AUTHOR}
+ */
+
+use Codeception\Exception\ConfigurationException;
+use Codeception\Lib\ParamsLoader;
+
+global $argv;
+
+if ( ! in_array( 'acceptance', $argv, true ) ) {
+	return [];
+}
+
+if ( ! in_array( 'github-actions', $argv, true ) ) {
+	try {
+		( new ParamsLoader() )->load( '.env.development' );
+	} catch ( ConfigurationException $e ) {
+		throw new Exception( 'If you wan\'t to run your tests locally, then create the `.env.development` configuration file.' );
+	}
+}
+
+return [
+	'WP_URL'            => getenv( 'WP_URL' ),
+	'WP_ADMIN_USERNAME' => getenv( 'WP_ADMIN_USERNAME' ),
+	'WP_ADMIN_PASSWORD' => getenv( 'WP_ADMIN_PASSWORD' ),
+	'WP_ADMIN_PATH'     => getenv( 'WP_ADMIN_PATH' ),
+	'DB_HOST'           => getenv( 'DB_HOST' ),
+	'DB_NAME'           => getenv( 'DB_NAME' ),
+	'DB_USER'           => getenv( 'DB_USER' ),
+	'DB_PASSWORD'       => getenv( 'DB_PASSWORD' ),
+	'DB_TABLE_PREFIX'   => getenv( 'DB_TABLE_PREFIX' ),
+];
+