public void TestAddRemoveItem()
{
var uiManager = IoCManager.Resolve <IUserInterfaceManagerInternal>();
uiManager.InitializeTesting();
var optionButton = new MultiselectOptionButton <string>();
optionButton.AddItem("Label1", "Key1");
optionButton.AddItem("Label2", "Key2");
optionButton.AddItem("Label3", "Key3");
Assert.That(optionButton.GetIdx("Key1"), Is.EqualTo(0));
Assert.That(optionButton.GetIdx("Key2"), Is.EqualTo(1));
Assert.That(optionButton.GetIdx("Key3"), Is.EqualTo(2));
Assert.That(optionButton.GetItemKey(0), Is.EqualTo("Key1"));
Assert.That(optionButton.GetItemKey(1), Is.EqualTo("Key2"));
Assert.That(optionButton.GetItemKey(2), Is.EqualTo("Key3"));
optionButton.RemoveItem(1);
Assert.That(optionButton.GetIdx("Key1"), Is.EqualTo(0));
Assert.That(optionButton.GetIdx("Key3"), Is.EqualTo(1));
Assert.That(optionButton.GetItemKey(0), Is.EqualTo("Key1"));
Assert.That(optionButton.GetItemKey(1), Is.EqualTo("Key3"));
optionButton.RemoveItem(0);
Assert.That(optionButton.GetIdx("Key3"), Is.EqualTo(0));
Assert.That(optionButton.GetItemKey(0), Is.EqualTo("Key3"));
}
