public void Controls_CanKeepListsOfControls_WithoutAllocatingGCMemory()
{
InputSystem.AddDevice <Mouse>(); // Noise.
var gamepad = InputSystem.AddDevice <Gamepad>();
var keyboard = InputSystem.AddDevice <Keyboard>();
var list = default(InputControlList <InputControl>);
Assert.That(() => { list = new InputControlList <InputControl>(); }, Is.Not.AllocatingGCMemory());
try
{
Assert.That(list.Count, Is.Zero);
Assert.That(list.ToArray(), Is.Empty);
Assert.That(() => list[0], Throws.TypeOf <ArgumentOutOfRangeException>());
list.Capacity = 4;
Assert.That(() =>
{
list.Add(gamepad.leftStick);
list.Add(null); // Permissible to add null entry.
list.Add(keyboard.spaceKey);
list.Add(keyboard);
}, Is.Not.AllocatingGCMemory());
Assert.That(list.Count, Is.EqualTo(4));
Assert.That(list.Capacity, Is.EqualTo(4));
Assert.That(list[0], Is.SameAs(gamepad.leftStick));
Assert.That(list[1], Is.Null);
Assert.That(list[2], Is.SameAs(keyboard.spaceKey));
Assert.That(list[3], Is.SameAs(keyboard));
Assert.That(() => list[4], Throws.TypeOf <ArgumentOutOfRangeException>());
Assert.That(list.ToArray(),
Is.EquivalentTo(new InputControl[] { gamepad.leftStick, null, keyboard.spaceKey, keyboard }));
Assert.That(list.Contains(gamepad.leftStick));
Assert.That(list.Contains(null));
Assert.That(list.Contains(keyboard.spaceKey));
Assert.That(list.Contains(keyboard));
Assert.That(() =>
{
list.RemoveAt(1);
list.Remove(keyboard);
}, Is.Not.AllocatingGCMemory());
Assert.That(list.Count, Is.EqualTo(2));
Assert.That(list.Capacity, Is.EqualTo(4));
Assert.That(list[0], Is.SameAs(gamepad.leftStick));
Assert.That(list[1], Is.SameAs(keyboard.spaceKey));
Assert.That(() => list[2], Throws.TypeOf <ArgumentOutOfRangeException>());
Assert.That(list.ToArray(), Is.EquivalentTo(new InputControl[] { gamepad.leftStick, keyboard.spaceKey }));
Assert.That(list.Contains(gamepad.leftStick));
Assert.That(!list.Contains(null));
Assert.That(list.Contains(keyboard.spaceKey));
Assert.That(!list.Contains(keyboard));
list.AddRange(new InputControl[] { keyboard.aKey, keyboard.bKey }, count: 1, destinationIndex: 0);
Assert.That(list.Count, Is.EqualTo(3));
Assert.That(list.Capacity, Is.EqualTo(4));
Assert.That(list,
Is.EquivalentTo(new InputControl[]
{ keyboard.aKey, gamepad.leftStick, keyboard.spaceKey }));
list.AddRange(new InputControl[] { keyboard.bKey, keyboard.cKey });
Assert.That(list.Count, Is.EqualTo(5));
Assert.That(list.Capacity, Is.EqualTo(10));
Assert.That(list,
Is.EquivalentTo(new InputControl[]
{ keyboard.aKey, gamepad.leftStick, keyboard.spaceKey, keyboard.bKey, keyboard.cKey }));
using (var toAdd = new InputControlList <InputControl>(gamepad.buttonNorth, gamepad.buttonEast, gamepad.buttonWest))
list.AddSlice(toAdd, count: 1, destinationIndex: 1, sourceIndex: 2);
Assert.That(list.Count, Is.EqualTo(6));
Assert.That(list.Capacity, Is.EqualTo(10));
Assert.That(list,
Is.EquivalentTo(new InputControl[]
{ keyboard.aKey, gamepad.buttonWest, gamepad.leftStick, keyboard.spaceKey, keyboard.bKey, keyboard.cKey }));
list[0] = keyboard.zKey;
Assert.That(list,
Is.EquivalentTo(new InputControl[]
{ keyboard.zKey, gamepad.buttonWest, gamepad.leftStick, keyboard.spaceKey, keyboard.bKey, keyboard.cKey }));
list.Clear();
Assert.That(list.Count, Is.Zero);
Assert.That(list.Capacity, Is.EqualTo(10));
Assert.That(list.ToArray(), Is.Empty);
Assert.That(() => list[0], Throws.TypeOf <ArgumentOutOfRangeException>());
Assert.That(!list.Contains(gamepad.leftStick));
Assert.That(!list.Contains(null));
Assert.That(!list.Contains(keyboard.spaceKey));
Assert.That(!list.Contains(keyboard));
}
finally
{
list.Dispose();
}
}
