public function testDeleteWithRelations()
{
// one-to-many, many-to-many
App\Post::find(1)->deleteWithRelations();
self::assertEquals(App\Post::where('id', 1)->count(), 0);
self::assertEquals(App\Comment::where('post_id', 1)->count(), 0);
self::assertEquals(DB::table('lv_post_tag')->where('post_id', 1)->count(), 0);
// one-to-one
App\Post::getDeleteDescriptor()->removeDescription('comments');
App\Comment::getDeleteDescriptor()->add('post');
App\Comment::find(4)->deleteWithRelations();
self::assertEquals(App\Comment::where('id', 4)->count(), 0);
self::assertEquals(App\Post::where('id', 2)->count(), 0);
// db rollback
$this->rollback();
}
