Make sure the Bento class is always a singleton

src/BentoServiceProvider.php

@@ -45,6 +45,8 @@ public function boot(): void
      */
     public function register(): void
     {
-        $this->app->singleton('bento', Bento::class);
+        $this->app->singleton(Bento::class);
+
+        $this->app->alias(Bento::class, 'bento');
     }
 }

tests/Integration/BentoTest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Exolnet\Bento\Tests\Integration;
+
+use Exolnet\Bento\Bento;
+use Exolnet\Bento\Tests\IntegrationTest;
+
+class BentoTest extends IntegrationTest
+{
+    /**
+     * @return void
+     */
+    public function testIsSingleton(): void
+    {
+        $instance1 = $this->app->make(Bento::class);
+        $instance2 = $this->app->make(Bento::class);
+
+        $this->assertSame($instance1, $instance2);
+    }
+
+    /**
+     * @return void
+     */
+    public function testAlias(): void
+    {
+        $instance = $this->app->make(Bento::class);
+        $alias    = $this->app->make('bento');
+
+        $this->assertSame($instance, $alias);
+    }
+}