- Database cleanup uses Models

- Formatted code as per Marco's comments

tests/_bootstrap.php

@@ -1,9 +1,9 @@
 <?php
 
-use MailPoet\Config\Env;
+$console = new \Codeception\Lib\Console\Output([]);
 
+$console->writeln('Loading WP core...');
 $wordpress_path = getenv('WP_TEST_PATH');
-
 if ($wordpress_path) {
   if (file_exists($wordpress_path . '/wp-load.php')) {
     require_once(getenv('WP_TEST_PATH') . '/wp-load.php');
@@ -12,13 +12,13 @@ if ($wordpress_path) {
   throw new Exception("You need to specify the path to your WordPress installation\n`WP_TEST_PATH` in your .env file");
 }
 
-global $wpdb;
+$console->writeln('Cleaning up database...');
+$models = array(
+    "Subscriber",
+    "Setting"
+);
 
-// clean database on each run
-$truncate_commands = $wpdb->get_results("SELECT concat('TRUNCATE TABLE `', TABLE_NAME, '`;') as `truncate`
-                              FROM INFORMATION_SCHEMA.TABLES
-                              WHERE TABLE_SCHEMA = '" . Env::$db_name . "' AND TABLE_NAME LIKE '" . Env::$db_prefix . "%'");
-foreach ($truncate_commands as $command) {
-  $wpdb->query($command->truncate);
+foreach ($models as $model) {
+  Model::factory("\MailPoet\Models\\" . $model)
+       ->delete_many();
 }
-