public void TestChangeOrder(int[] orders, int oldOrder, int nowOrder, int[] movingOrders, int[] newOrder)
{
try
{
var objects = orders?.Select(x => new TestOrderObject {
Order = x
}).ToArray();
// record order index change step.
var movingStepResult = new List <int>();
// This utils only change order property.
OrderUtils.ChangeOrder(objects, oldOrder, nowOrder, (_, o, _) =>
{
movingStepResult.Add(o);
});
// change order result.
var result = objects?.Select(x => x.Order).ToArray();
Assert.AreEqual(result, newOrder);
// should check moving order step also.
Assert.AreEqual(movingStepResult.ToArray(), movingOrders);
}
catch
{
Assert.IsNull(newOrder);
}
}
public void ChangeLyricOrder(Lyric lyric, int newIndex)
{
var oldOrder = lyric.Order;
var newOrder = newIndex + 1; // order is start from 1
OrderUtils.ChangeOrder(Lyrics.ToArray(), oldOrder, newOrder, (switchSinger, oldOrder, newOrder) =>
{
// todo : not really sure should call update?
});
}