public void CompositionContainer_works_fine_when_explicitely_set()
{
var ambientServices = new AmbientServices();
var mockContainer = Mock.Create<ICompositionContext>();
mockContainer.Arrange(c => c.TryGetExport<ICompositionContext>(null)).Returns((ICompositionContext)null);
ambientServices.RegisterService(mockContainer);
var noService = ambientServices.CompositionContainer.TryGetExport<ICompositionContext>();
Assert.IsNull(noService);
}
public void CompositionContainer_cannot_set_null()
{
var ambientServices = new AmbientServices();
Assert.That(() => ambientServices.RegisterService<ICompositionContext>(null), Throws.InstanceOf<Exception>());
}