diff --git a/tests/Migrations/MySQL/RendererTest.php b/tests/Migrations/MySQL/RendererTest.php
index 68a40da..2e0c512 100644
--- a/tests/Migrations/MySQL/RendererTest.php
+++ b/tests/Migrations/MySQL/RendererTest.php
@@ -11,6 +11,12 @@
 
 namespace Cycle\Migrations\Tests\MySQL;
 
+use Cycle\Database\Driver\MySQL\Schema\MySQLIndex;
+use Cycle\Database\Schema\Comparator;
+use Cycle\Database\Schema\State;
+use Cycle\Migrations\Atomizer\Renderer;
+use Spiral\Reactor\Partial\Method;
+
 /**
  * @group driver
  * @group driver-mysql
@@ -18,4 +24,36 @@
 class RendererTest extends \Cycle\Migrations\Tests\RendererTest
 {
     public const DRIVER = 'mysql';
+
+    public function testDeclareIndexes(): void
+    {
+        $method = new Method('up');
+
+        $columns = ['email', 'username'];
+
+        $indexA = new MySQLIndex('table', 'idx_email_username');
+        $indexA->columns($columns);
+        $initial = new State('test_table');
+        $initial->registerIndex($indexA);
+
+
+        $indexB = new MySQLIndex('table', 'idx_email_username');
+        $indexB->columns(\array_reverse($columns));
+        $current = new State('test_table');
+        $current->registerIndex($indexB);
+
+        $comparator = new Comparator($initial, $current);
+
+        $renderer = new Renderer();
+
+        $reflectionMethod = new \ReflectionMethod($renderer, 'declareIndexes');
+        $reflectionMethod->setAccessible(true);
+
+        /**
+         * Method $method, Comparator $comparator
+         */
+        $reflectionMethod->invoke($renderer, $method, $comparator);
+
+        self::assertSame('', $method->getBody());
+    }
 }
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 9121c27..fabecc4 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -11,12 +11,12 @@
 
 use Cycle\Database\Config;
 
-error_reporting(E_ALL | E_STRICT);
-ini_set('display_errors', '1');
-mb_internal_encoding('UTF-8');
+\error_reporting(E_ALL | E_STRICT);
+\ini_set('display_errors', '1');
+\mb_internal_encoding('UTF-8');
 
 //Composer
-require dirname(__DIR__) . '/vendor/autoload.php';
+require \dirname(__DIR__) . '/vendor/autoload.php';
 
 $drivers = [
     'debug' => false,
@@ -31,7 +31,7 @@
             user: 'root',
             password: 'YourStrong!Passw0rd',
         ),
-        queryCache: true
+        queryCache: true,
     ),
     'postgres' => new Config\PostgresDriverConfig(
         connection: new Config\Postgres\TcpConnectionConfig(
@@ -53,18 +53,18 @@
             user: 'SA',
             password: 'YourStrong!Passw0rd',
         ),
-        queryCache: true
+        queryCache: true,
     ),
 ];
 
-$db = getenv('DB') ?: null;
+$db = \getenv('DB') ?: null;
 if ($db !== null) {
     $db = [$db, "$db-mock"];
 }
 \Cycle\Migrations\Tests\BaseTest::$config = [
-    'debug' => getenv('DB_DEBUG') ?: false,
+    'debug' => \getenv('DB_DEBUG') ?: false,
 ] + (
     $db === null
         ? $drivers
-        : array_intersect_key($drivers, array_flip((array)$db))
+        : \array_intersect_key($drivers, \array_flip((array) $db))
 );