Move a light between groups

MoveLightTest.cs

[TestFixture]
public class When_moving_a_light_from_one_group_to_another
{
    private LightGroup _fooGroup;
    private LightGroup _barGroup;
    private Light _light;

    [SetUp]
    public void ContextSetup()
    {
        var model = new MasterModel();
        _fooGroup = model.CreateProject().CreateGroup();
        _barGroup = model.CreateProject().CreateGroup();

        var zWaveIdentity = new ZWaveValueIdentity(1, 2, 123);
        _light = new Light(zWaveIdentity);
        _fooGroup.AddLight(_light);

        model.AssignLightToGroup(zWaveIdentity, _barGroup.Id);
    }

    [Test]
    public void Should_remove_the_light_from_the_original_group()
    {
        _fooGroup.Lights.Length.ShouldEqual(0);
    }

    [Test]
    public void Should_add_the_light_to_the_new_group()
    {
        _barGroup.Lights.Length.ShouldEqual(1);
        _barGroup.Lights[0].ZWaveIdentity.ValueId.ShouldEqual((ulong)123);
        _light.ParentGroup.ShouldBeSameAs(_barGroup);
    }
}