[增添]添加了datasource的setting数据库以及默认值

vendor/anourvalar/eloquent-serialize/tests/Casts/TestCast.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace AnourValar\EloquentSerialize\Tests\Casts;
+
+use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
+
+class TestCast implements CastsAttributes
+{
+    /**
+     * Cast the given value.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  string  $key
+     * @param  mixed  $value
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function get($model, string $key, $value, array $attributes)
+    {
+        return $value;
+    }
+
+    /**
+     * Prepare the given value for storage.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  string  $key
+     * @param  mixed  $value
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function set($model, string $key, $value, array $attributes)
+    {
+        return $value;
+    }
+}