Unit Tests for Permission module

tests/Unit/Models/PermissionTest.php

+<?php
+
+namespace Tests\Unit\Models;
+
+use Tests\TestCase;
+use App\Models\Access\Permission\Permission;
+
+class PermissionTest extends TestCase
+{
+    /** @test */
+    public function a_permission_has_roles()
+    {
+        $permission = Permission::find(1);
+        $this->assertInstanceOf(
+            'Illuminate\Database\Eloquent\Collection', $permission->roles
+        );
+    }
+}