feat: database support

tests/Helpers/ConfigDatabaseMock.php

@@ -0,0 +1,17 @@
+<?php
+
+return [
+    'format_numbers' => true,
+    'decimals' => 2,
+    'round_mode' => 'up',
+    'driver' => 'database',
+    'storage' => [
+        'session',
+        'database' => [
+            'model' => \Joelwmale\Cart\Tests\Helpers\MockCartModel::class,
+            'id' => 'session_id',
+            'items' => 'items',
+            'conditions' => 'conditions',
+        ],
+    ],
+];

tests/Helpers/MockCartModel.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Joelwmale\Cart\Tests\Helpers;
+
+use Illuminate\Database\Eloquent\Model;
+
+class MockCartModel extends Model
+{
+    protected $fillable = [
+        'session_id',
+        'items',
+        'conditions',
+    ];
+
+    public $timestamps = false;
+
+    protected $casts = [
+        'items' => 'array',
+        'conditions' => 'array',
+    ];
+
+    protected $table = 'carts';
+}