configs fixed and improved

config/codeception/acceptance.php

@@ -1,3 +1,9 @@
 <?php
 
-return [];
+return [
+	'components' => [
+		'db' => [
+			'dsn' => 'mysql:host=localhost;dbname=yii2basic_acceptance',
+		],
+	],
+];

config/codeception/functional.php

@@ -1,3 +1,9 @@
 <?php
 
-return [];
+return [
+	'components' => [
+		'db' => [
+			'dsn' => 'mysql:host=localhost;dbname=yii2basic_functional',
+		],
+	],
+];

config/web-test.php

@@ -1,5 +1,7 @@
 <?php
 
+Yii::setAlias('tests', realpath(__DIR__ . '/../tests'));
+
 $config = require(__DIR__ . '/web.php');
 
 // ... customize $config for the "test" environment here...